STARZO AIEvals

Task index

90 problems, each with a verifier the agent never sees.

90
tasks in the corpus
879 scored trials across them
15
categories
10 live, 5 preview
14
tasks nothing solved
5 of them cleanly: every trial an honest miss

14 tasks nothing solved

No trial on these reached a reward of exactly 1.0. 5 of them failed cleanly: every trial an honest miss, no harness error and no trial blamed on the task, so only those 5 zeros are a statement about the agents. 8 carry at least one suspect label. 1 is scored 0–1, where "nobody solved it" only means no trial landed on exactly 1.0.

coprocessor-dispatcher-classmixclean miss
Electrical Engineering·10 trials
10 honest misses
task page ↗
diff-patch-engineclean miss
Software Engineering·10 trials
10 honest misses
task page ↗
quaternion-rotation-integratorclean miss
Mechanical Engineering·10 trials
10 honest misses
task page ↗
reverse-engineer-objectivesclean miss
Post Training·10 trials
10 honest misses
task page ↗
serial-break-resyncclean miss
Electrical Engineering·10 trials
10 honest misses
task page ↗
cholesky-solversuspect label
STEM·10 trials
7 honest misses· 3 blamed on the task
task page ↗
collision2d-impulse-solversuspect label
Mechanical Engineering·10 trials
9 honest misses· 1 harness error
task page ↗
debug-halt-step-fsmsuspect label
Electrical Engineering·10 trials
6 honest misses· 4 blamed on the task
task page ↗
hash-message-paddersuspect label
Electrical Engineering·10 trials
1 blamed on the task· 9 harness errors
task page ↗
minimap-uisuspect label
Game·10 trials
6 honest misses· 4 blamed on the task
task page ↗
Multi-cycle signed divider with a start/valid handshakesuspect label
Electrical Engineering·3 trials
2 honest misses· 1 blamed on the task
task page ↗
resilient-http-clientsuspect label
Software Engineering·10 trials
8 honest misses· 1 blamed on the task· 1 harness error
task page ↗
Resynchronising serial byte receiversuspect label
Electrical Engineering·3 trials
1 honest miss· 2 blamed on the task
task page ↗
deepcad-canonical-equivalencegraded 0–1
ML for Engineering·10 trials
10 honest misses
task page ↗

What a task is made of

Four pieces, and the split between them is the whole design: the agent can read two of them and nothing it writes can reach the other two.

starter workspace

The filesystem the agent wakes up in: sources, fixtures, build files, and nothing that answers the question for it.

hidden reference solution

Every task ships with a worked solution kept out of the agent's image. It proves the problem is solvable and fixes what counts as done.

deterministic verifier

Grading is a program, not an opinion. The same submission returns the same reward on every run, and the agent never reads it.

k = 10 trials per task

Each agent attempts a task repeatedly, so one lucky pass cannot carry a task or a category.

pass@1 below is the share of a task's trials that returned a reward of exactly 1.0, and the difficulty tier in the filter bar is derived from it: easy is 70% of trials resolved or more, hard is under 30%. 1 of the 90 tasks is scored on a continuous 0–1 scale instead. It is shown with a mean score and carries no tier, since both a pass@1 figure and a tier derived from one would be meaningless for it.

Fifteen categories

Bars are resolve rate: one hue, one measure. A category reads live once it has 20 or more scored trials and preview below that; the threshold counts trials, not tasks, so three tasks run five times each still read preview. Picking one here also narrows the index below it.

Software Engineeringlive

Algorithms, data structures, bug-fixes, and API/systems implementation, graded against hidden test suites the agent never sees.

8tasks
85trials
49/85resolved
57.6% of trials reached reward 1.0
TaskResolvedpass@1
session-token-verify

10 trials · 10/10 reached reward 1.0 · pass@1 100.0% · derived difficulty easy ≥70%

By agent

  • claude-code / claude-opus-4-810 trials · 10/10 resolved · 100.0%

Trial labels

Legitimate solve10

session-token-verify on syncvals.syncrope.com ↗

10/10100.0%
window-aggregate-store

10 trials · 10/10 reached reward 1.0 · pass@1 100.0% · derived difficulty easy ≥70%

By agent

  • claude-code / claude-opus-4-810 trials · 10/10 resolved · 100.0%

Trial labels

Legitimate solve10

window-aggregate-store on syncvals.syncrope.com ↗

10/10100.0%
lru-cache

15 trials · 14/15 reached reward 1.0 · pass@1 93.3% · derived difficulty easy ≥70%

By agent

  • claude-code / claude-haiku-4-510 trials · 9/10 resolved · 90.0%
  • codex / gpt-5.55 trials · 5/5 resolved · 100.0%

Trial labels

Legitimate solve12Honest miss1Harness error2

lru-cache on syncvals.syncrope.com ↗

14/1593.3%
occ-conditional-store

10 trials · 9/10 reached reward 1.0 · pass@1 90.0% · derived difficulty easy ≥70%

By agent

  • claude-code / claude-opus-4-810 trials · 9/10 resolved · 90.0%

Trial labels

Legitimate solve9Honest miss1

occ-conditional-store on syncvals.syncrope.com ↗

9/1090.0%
idempotency-middleware

10 trials · 4/10 reached reward 1.0 · pass@1 40.0% · derived difficulty medium 30–70%

By agent

  • claude-code / claude-opus-4-810 trials · 4/10 resolved · 40.0%

Trial labels

Legitimate solve4Honest miss6

idempotency-middleware on syncvals.syncrope.com ↗

4/1040.0%
rate-limiter1 reward-hack

10 trials · 2/10 reached reward 1.0 · pass@1 20.0% · derived difficulty hard <30%

By agent

  • claude-code / claude-opus-4-810 trials · 2/10 resolved · 20.0%

Trial labels

Legitimate solve1Reward-hack1Honest miss3Task at fault5

rate-limiter on syncvals.syncrope.com ↗

2/1020.0%
diff-patch-engineunsolved

10 trials · 0/10 reached reward 1.0 · pass@1 0.0% · derived difficulty hard <30%

By agent

  • claude-code / claude-opus-4-810 trials · 0/10 resolved · 0.0%

Trial labels

Honest miss10

diff-patch-engine on syncvals.syncrope.com ↗

0/100.0%
resilient-http-clientunsolved

10 trials · 0/10 reached reward 1.0 · pass@1 0.0% · derived difficulty hard <30%

By agent

  • claude-code / claude-opus-4-810 trials · 0/10 resolved · 0.0%

Trial labels

Honest miss8Task at fault1Harness error1

resilient-http-client on syncvals.syncrope.com ↗

0/100.0%

Mechanical Engineeringlive

Structural and numerical solvers (FD/FE, contact dynamics) in C++, checked against multi-binary hidden references.

8tasks
80trials
28/80resolved
35.0% of trials reached reward 1.0
TaskResolvedpass@1
rk4-orbit-integrator

10 trials · 10/10 reached reward 1.0 · pass@1 100.0% · derived difficulty easy ≥70%

By agent

  • claude-code / claude-opus-4-810 trials · 10/10 resolved · 100.0%

Trial labels

Legitimate solve10

rk4-orbit-integrator on syncvals.syncrope.com ↗

10/10100.0%
truss2d-solver

10 trials · 6/10 reached reward 1.0 · pass@1 60.0% · derived difficulty medium 30–70%

By agent

  • claude-code / claude-opus-4-810 trials · 6/10 resolved · 60.0%

Trial labels

Legitimate solve6Honest miss4

truss2d-solver on syncvals.syncrope.com ↗

6/1060.0%
pipeflow-colebrook-solver

10 trials · 4/10 reached reward 1.0 · pass@1 40.0% · derived difficulty medium 30–70%

By agent

  • claude-code / claude-opus-4-810 trials · 4/10 resolved · 40.0%

Trial labels

Legitimate solve4Honest miss6

pipeflow-colebrook-solver on syncvals.syncrope.com ↗

4/1040.0%
beam-deflection-solver

10 trials · 3/10 reached reward 1.0 · pass@1 30.0% · derived difficulty medium 30–70%

By agent

  • claude-code / claude-opus-4-810 trials · 3/10 resolved · 30.0%

Trial labels

Legitimate solve3Honest miss7

beam-deflection-solver on syncvals.syncrope.com ↗

3/1030.0%
heat1d-conduction-solver

10 trials · 3/10 reached reward 1.0 · pass@1 30.0% · derived difficulty medium 30–70%

By agent

  • claude-code / claude-opus-4-810 trials · 3/10 resolved · 30.0%

Trial labels

Legitimate solve3Honest miss7

heat1d-conduction-solver on syncvals.syncrope.com ↗

3/1030.0%
projectile-drag-integrator

10 trials · 2/10 reached reward 1.0 · pass@1 20.0% · derived difficulty hard <30%

By agent

  • claude-code / claude-opus-4-810 trials · 2/10 resolved · 20.0%

Trial labels

Legitimate solve2Honest miss7Harness error1

projectile-drag-integrator on syncvals.syncrope.com ↗

2/1020.0%
collision2d-impulse-solverunsolved

10 trials · 0/10 reached reward 1.0 · pass@1 0.0% · derived difficulty hard <30%

By agent

  • claude-code / claude-opus-4-810 trials · 0/10 resolved · 0.0%

Trial labels

Honest miss9Harness error1

collision2d-impulse-solver on syncvals.syncrope.com ↗

0/100.0%
quaternion-rotation-integratorunsolved

10 trials · 0/10 reached reward 1.0 · pass@1 0.0% · derived difficulty hard <30%

By agent

  • claude-code / claude-opus-4-810 trials · 0/10 resolved · 0.0%

Trial labels

Honest miss10

quaternion-rotation-integrator on syncvals.syncrope.com ↗

0/100.0%

Cloud Operationslive

Provision, diagnose, and guardrail cloud infrastructure (AWS), verified against the deployed state.

19tasks
180trials
56/180resolved
31.1% of trials reached reward 1.0
TaskResolvedpass@1
ecs-fargate-secrets-kms-exec-role

7 trials · 6/7 reached reward 1.0 · pass@1 85.7% · derived difficulty easy ≥70%

By agent

  • claude-code / claude-opus-4-77 trials · 6/7 resolved · 85.7%

Trial labels

Legitimate solve6Honest miss1

ecs-fargate-secrets-kms-exec-role on syncvals.syncrope.com ↗

6/785.7%
secrets-rotation-kms

10 trials · 6/10 reached reward 1.0 · pass@1 60.0% · derived difficulty medium 30–70%

By agent

  • claude-code / claude-opus-4-710 trials · 6/10 resolved · 60.0%

Trial labels

Legitimate solve5Honest miss3Task at fault1Harness error1

secrets-rotation-kms on syncvals.syncrope.com ↗

6/1060.0%
sfn-saga-compensation-orchestrator

10 trials · 5/10 reached reward 1.0 · pass@1 50.0% · derived difficulty medium 30–70%

By agent

  • claude-code / claude-opus-4-710 trials · 5/10 resolved · 50.0%

Trial labels

Legitimate solve4Task at fault4Harness error2

sfn-saga-compensation-orchestrator on syncvals.syncrope.com ↗

5/1050.0%
athena-workgroup-result-encryption-cmk-enforced

5 trials · 2/5 reached reward 1.0 · pass@1 40.0% · derived difficulty medium 30–70%

By agent

  • claude-code / claude-opus-4-75 trials · 2/5 resolved · 40.0%

Trial labels

Legitimate solve2Honest miss2Task at fault1

athena-workgroup-result-encryption-cmk-enforced on syncvals.syncrope.com ↗

2/540.0%
ddb-outbox-eventbridge-fanout

10 trials · 4/10 reached reward 1.0 · pass@1 40.0% · derived difficulty medium 30–70%

By agent

  • claude-code / claude-opus-4-710 trials · 4/10 resolved · 40.0%

Trial labels

Legitimate solve4Honest miss4Task at fault1Harness error1

ddb-outbox-eventbridge-fanout on syncvals.syncrope.com ↗

4/1040.0%
iam-revoke-older-sessions

10 trials · 4/10 reached reward 1.0 · pass@1 40.0% · derived difficulty medium 30–70%

By agent

  • claude-code / claude-opus-4-710 trials · 4/10 resolved · 40.0%

Trial labels

Legitimate solve4Honest miss3Task at fault3

iam-revoke-older-sessions on syncvals.syncrope.com ↗

4/1040.0%
ecr-image-scan-lifecycle-immutable-tags-replication

9 trials · 3/9 reached reward 1.0 · pass@1 33.3% · derived difficulty medium 30–70%

By agent

  • claude-code / claude-opus-4-79 trials · 3/9 resolved · 33.3%

Trial labels

Legitimate solve3Honest miss4Task at fault2

ecr-image-scan-lifecycle-immutable-tags-replication on syncvals.syncrope.com ↗

3/933.3%
glue-etl-catalog-security-configuration-kms

9 trials · 3/9 reached reward 1.0 · pass@1 33.3% · derived difficulty medium 30–70%

By agent

  • claude-code / claude-opus-4-79 trials · 3/9 resolved · 33.3%

Trial labels

Legitimate solve3Honest miss4Task at fault1Harness error1

glue-etl-catalog-security-configuration-kms on syncvals.syncrope.com ↗

3/933.3%
apigw-http-api-jwt-authorizer-lambda-integration

10 trials · 3/10 reached reward 1.0 · pass@1 30.0% · derived difficulty medium 30–70%

By agent

  • claude-code / claude-opus-4-710 trials · 3/10 resolved · 30.0%

Trial labels

Legitimate solve3Honest miss1Task at fault6

apigw-http-api-jwt-authorizer-lambda-integration on syncvals.syncrope.com ↗

3/1030.0%
efs-access-point-posix-iam-mount-target

10 trials · 3/10 reached reward 1.0 · pass@1 30.0% · derived difficulty medium 30–70%

By agent

  • claude-code / claude-opus-4-710 trials · 3/10 resolved · 30.0%

Trial labels

Legitimate solve3Honest miss1Task at fault5Harness error1

efs-access-point-posix-iam-mount-target on syncvals.syncrope.com ↗

3/1030.0%
iam-cross-account-externalid-sourcearn

10 trials · 3/10 reached reward 1.0 · pass@1 30.0% · derived difficulty medium 30–70%

By agent

  • claude-code / claude-opus-4-710 trials · 3/10 resolved · 30.0%

Trial labels

Legitimate solve3Task at fault6Harness error1

iam-cross-account-externalid-sourcearn on syncvals.syncrope.com ↗

3/1030.0%
iam-session-tag-tenant-scope1 reward-hack

10 trials · 3/10 reached reward 1.0 · pass@1 30.0% · derived difficulty medium 30–70%

By agent

  • claude-code / claude-opus-4-710 trials · 3/10 resolved · 30.0%

Trial labels

Legitimate solve2Reward-hack1Honest miss5Task at fault2

iam-session-tag-tenant-scope on syncvals.syncrope.com ↗

3/1030.0%
apigw-sqs-fifo-direct-integration

10 trials · 2/10 reached reward 1.0 · pass@1 20.0% · derived difficulty hard <30%

By agent

  • claude-code / claude-opus-4-710 trials · 2/10 resolved · 20.0%

Trial labels

Legitimate solve1Honest miss7Harness error2

apigw-sqs-fifo-direct-integration on syncvals.syncrope.com ↗

2/1020.0%
iam-permissions-boundary-ceiling

10 trials · 2/10 reached reward 1.0 · pass@1 20.0% · derived difficulty hard <30%

By agent

  • claude-code / claude-opus-4-710 trials · 2/10 resolved · 20.0%

Trial labels

Legitimate solve2Honest miss6Task at fault1Harness error1

iam-permissions-boundary-ceiling on syncvals.syncrope.com ↗

2/1020.0%
s3-lambda-ddb-pipeline

10 trials · 2/10 reached reward 1.0 · pass@1 20.0% · derived difficulty hard <30%

By agent

  • claude-code / claude-opus-4-710 trials · 2/10 resolved · 20.0%

Trial labels

Legitimate solve2Honest miss2Task at fault2Harness error4

s3-lambda-ddb-pipeline on syncvals.syncrope.com ↗

2/1020.0%
s3-sqs-image-pipeline-kms

10 trials · 2/10 reached reward 1.0 · pass@1 20.0% · derived difficulty hard <30%

By agent

  • claude-code / claude-opus-4-710 trials · 2/10 resolved · 20.0%

Trial labels

Legitimate solve2Honest miss4Task at fault3Harness error1

s3-sqs-image-pipeline-kms on syncvals.syncrope.com ↗

2/1020.0%
appsync-graphql-cognito-resolver-cache-leak

10 trials · 1/10 reached reward 1.0 · pass@1 10.0% · derived difficulty hard <30%

By agent

  • claude-code / claude-opus-4-710 trials · 1/10 resolved · 10.0%

Trial labels

Legitimate solve1Honest miss6Task at fault3

appsync-graphql-cognito-resolver-cache-leak on syncvals.syncrope.com ↗

1/1010.0%
cognito-m2m-httpapi-jwt-scope-gated

10 trials · 1/10 reached reward 1.0 · pass@1 10.0% · derived difficulty hard <30%

By agent

  • claude-code / claude-opus-4-710 trials · 1/10 resolved · 10.0%

Trial labels

Legitimate solve1Honest miss6Task at fault1Harness error2

cognito-m2m-httpapi-jwt-scope-gated on syncvals.syncrope.com ↗

1/1010.0%
sfn-secrets-rotation-chain1 reward-hack

10 trials · 1/10 reached reward 1.0 · pass@1 10.0% · derived difficulty hard <30%

By agent

  • claude-code / claude-opus-4-710 trials · 1/10 resolved · 10.0%

Trial labels

Reward-hack1Honest miss8Harness error1

sfn-secrets-rotation-chain on syncvals.syncrope.com ↗

1/1010.0%

Electrical Engineeringlive

RTL / digital-logic design checked under hardened simulation and formal-equivalence harnesses.

20tasks
158trials
82/158resolved
51.9% of trials reached reward 1.0
TaskResolvedpass@1
apb-lite-slave-regfile

10 trials · 10/10 reached reward 1.0 · pass@1 100.0% · derived difficulty easy ≥70%

By agent

  • claude-code / claude-opus-4-810 trials · 10/10 resolved · 100.0%

Trial labels

Legitimate solve10

apb-lite-slave-regfile on syncvals.syncrope.com ↗

10/10100.0%
bcd-tens-rollover

10 trials · 10/10 reached reward 1.0 · pass@1 100.0% · derived difficulty easy ≥70%

By agent

  • claude-code / claude-opus-4-810 trials · 10/10 resolved · 100.0%

Trial labels

Legitimate solve10

bcd-tens-rollover on syncvals.syncrope.com ↗

10/10100.0%
bus-slave-abort-ack

10 trials · 10/10 reached reward 1.0 · pass@1 100.0% · derived difficulty easy ≥70%

By agent

  • claude-code / claude-opus-4-810 trials · 10/10 resolved · 100.0%

Trial labels

Legitimate solve10

bus-slave-abort-ack on syncvals.syncrope.com ↗

10/10100.0%
Enable-gated streaming fold stage

3 trials · 3/3 reached reward 1.0 · pass@1 100.0% · derived difficulty easy ≥70%

By agent

  • codex / gpt-5.53 trials · 3/3 resolved · 100.0%

Trial labels

Legitimate solve2Harness error1

Enable-gated streaming fold stage on syncvals.syncrope.com ↗

3/3100.0%
Instruction-retire commit handshake3 reward-hacks

3 trials · 3/3 reached reward 1.0 · pass@1 100.0% · derived difficulty easy ≥70%

By agent

  • codex / gpt-5.53 trials · 3/3 resolved · 100.0%

Trial labels

Reward-hack3

Instruction-retire commit handshake on syncvals.syncrope.com ↗

3/3100.0%
page-program-suspend

10 trials · 10/10 reached reward 1.0 · pass@1 100.0% · derived difficulty easy ≥70%

By agent

  • claude-code / claude-opus-4-810 trials · 10/10 resolved · 100.0%

Trial labels

Legitimate solve10

page-program-suspend on syncvals.syncrope.com ↗

10/10100.0%
round-robin-arbiter-grant

10 trials · 10/10 reached reward 1.0 · pass@1 100.0% · derived difficulty easy ≥70%

By agent

  • claude-code / claude-opus-4-810 trials · 10/10 resolved · 100.0%

Trial labels

Legitimate solve10

round-robin-arbiter-grant on syncvals.syncrope.com ↗

10/10100.0%
Serial bit-destuff framer1 reward-hack

3 trials · 3/3 reached reward 1.0 · pass@1 100.0% · derived difficulty easy ≥70%

By agent

  • codex / gpt-5.53 trials · 3/3 resolved · 100.0%

Trial labels

Legitimate solve2Reward-hack1

Serial bit-destuff framer on syncvals.syncrope.com ↗

3/3100.0%
Wait-state register-file completer

3 trials · 3/3 reached reward 1.0 · pass@1 100.0% · derived difficulty easy ≥70%

By agent

  • codex / gpt-5.53 trials · 3/3 resolved · 100.0%

Trial labels

Legitimate solve3

Wait-state register-file completer on syncvals.syncrope.com ↗

3/3100.0%
open-drain-command-engine1 reward-hack

10 trials · 8/10 reached reward 1.0 · pass@1 80.0% · derived difficulty easy ≥70%

By agent

  • codex / gpt-5.510 trials · 8/10 resolved · 80.0%

Trial labels

Legitimate solve7Reward-hack1Honest miss1Harness error1

open-drain-command-engine on syncvals.syncrope.com ↗

8/1080.0%
dualmaster-membridge

10 trials · 5/10 reached reward 1.0 · pass@1 50.0% · derived difficulty medium 30–70%

By agent

  • claude-code / claude-opus-4-810 trials · 5/10 resolved · 50.0%

Trial labels

Legitimate solve5Honest miss5

dualmaster-membridge on syncvals.syncrope.com ↗

5/1050.0%
stream-frame-hold

10 trials · 4/10 reached reward 1.0 · pass@1 40.0% · derived difficulty medium 30–70%

By agent

  • claude-code / claude-opus-4-810 trials · 4/10 resolved · 40.0%

Trial labels

Legitimate solve4Honest miss6

stream-frame-hold on syncvals.syncrope.com ↗

4/1040.0%
byte-serial-round-scheduler

10 trials · 2/10 reached reward 1.0 · pass@1 20.0% · derived difficulty hard <30%

By agent

  • claude-code / claude-opus-4-810 trials · 2/10 resolved · 20.0%

Trial labels

Legitimate solve2Honest miss7Task at fault1

byte-serial-round-scheduler on syncvals.syncrope.com ↗

2/1020.0%
serial-receiver-framed

10 trials · 1/10 reached reward 1.0 · pass@1 10.0% · derived difficulty hard <30%

By agent

  • claude-code / claude-opus-4-810 trials · 1/10 resolved · 10.0%

Trial labels

Legitimate solve1Honest miss9

serial-receiver-framed on syncvals.syncrope.com ↗

1/1010.0%
coprocessor-dispatcher-classmixunsolved

10 trials · 0/10 reached reward 1.0 · pass@1 0.0% · derived difficulty hard <30%

By agent

  • claude-code / claude-opus-4-810 trials · 0/10 resolved · 0.0%

Trial labels

Honest miss10

coprocessor-dispatcher-classmix on syncvals.syncrope.com ↗

0/100.0%
debug-halt-step-fsmunsolved

10 trials · 0/10 reached reward 1.0 · pass@1 0.0% · derived difficulty hard <30%

By agent

  • claude-code / claude-opus-4-810 trials · 0/10 resolved · 0.0%

Trial labels

Honest miss6Task at fault4

debug-halt-step-fsm on syncvals.syncrope.com ↗

0/100.0%
hash-message-padderunsolved

10 trials · 0/10 reached reward 1.0 · pass@1 0.0% · derived difficulty hard <30%

By agent

  • claude-code / claude-opus-4-810 trials · 0/10 resolved · 0.0%

Trial labels

Task at fault1Harness error9

hash-message-padder on syncvals.syncrope.com ↗

0/100.0%
Multi-cycle signed divider with a start/valid handshakeunsolved

3 trials · 0/3 reached reward 1.0 · pass@1 0.0% · derived difficulty hard <30%

By agent

  • codex / gpt-5.53 trials · 0/3 resolved · 0.0%

Trial labels

Honest miss2Task at fault1

Multi-cycle signed divider with a start/valid handshake on syncvals.syncrope.com ↗

0/30.0%
Resynchronising serial byte receiverunsolved

3 trials · 0/3 reached reward 1.0 · pass@1 0.0% · derived difficulty hard <30%

By agent

  • codex / gpt-5.53 trials · 0/3 resolved · 0.0%

Trial labels

Honest miss1Task at fault2

Resynchronising serial byte receiver on syncvals.syncrope.com ↗

0/30.0%
serial-break-resyncunsolved

10 trials · 0/10 reached reward 1.0 · pass@1 0.0% · derived difficulty hard <30%

By agent

  • claude-code / claude-opus-4-810 trials · 0/10 resolved · 0.0%

Trial labels

Honest miss10

serial-break-resync on syncvals.syncrope.com ↗

0/100.0%

STEMlive

Quantitative reasoning across math, physics, and the natural sciences with deterministic, checkable answers.

5tasks
81trials
59/81resolved
72.8% of trials reached reward 1.0
TaskResolvedpass@1
adaptive-quadrature

10 trials · 10/10 reached reward 1.0 · pass@1 100.0% · derived difficulty easy ≥70%

By agent

  • claude-code / claude-opus-4-810 trials · 10/10 resolved · 100.0%

Trial labels

Legitimate solve10

adaptive-quadrature on syncvals.syncrope.com ↗

10/10100.0%
anova-stats

11 trials · 11/11 reached reward 1.0 · pass@1 100.0% · derived difficulty easy ≥70%

By agent

  • claude-code / claude-opus-4-811 trials · 11/11 resolved · 100.0%

Trial labels

Legitimate solve11

anova-stats on syncvals.syncrope.com ↗

11/11100.0%
cubic-spline

10 trials · 10/10 reached reward 1.0 · pass@1 100.0% · derived difficulty easy ≥70%

By agent

  • claude-code / claude-opus-4-810 trials · 10/10 resolved · 100.0%

Trial labels

Legitimate solve10

cubic-spline on syncvals.syncrope.com ↗

10/10100.0%
cg-solver1 reward-hack

40 trials · 28/40 reached reward 1.0 · pass@1 70.0% · derived difficulty easy ≥70%

By agent

  • claude-code / claude-opus-4-840 trials · 28/40 resolved · 70.0%

Trial labels

Legitimate solve27Reward-hack1Honest miss7Task at fault5

cg-solver on syncvals.syncrope.com ↗

28/4070.0%
cholesky-solverunsolved

10 trials · 0/10 reached reward 1.0 · pass@1 0.0% · derived difficulty hard <30%

By agent

  • claude-code / claude-opus-4-810 trials · 0/10 resolved · 0.0%

Trial labels

Honest miss7Task at fault3

cholesky-solver on syncvals.syncrope.com ↗

0/100.0%

Gamelive

Interactive simulation and game-logic tasks graded on exact state transitions and rule fidelity.

10tasks
105trials
46/105resolved
43.8% of trials reached reward 1.0
TaskResolvedpass@1
game-of-life-step

15 trials · 15/15 reached reward 1.0 · pass@1 100.0% · derived difficulty easy ≥70%

By agent

  • claude-code / claude-haiku-4-510 trials · 10/10 resolved · 100.0%
  • codex / gpt-5.55 trials · 5/5 resolved · 100.0%

Trial labels

Legitimate solve15

game-of-life-step on syncvals.syncrope.com ↗

15/15100.0%
car-scene-assembly2 reward-hacks

10 trials · 6/10 reached reward 1.0 · pass@1 60.0% · derived difficulty medium 30–70%

By agent

  • claude-code / claude-opus-4-810 trials · 6/10 resolved · 60.0%

Trial labels

Legitimate solve4Reward-hack2Honest miss3Task at fault1

car-scene-assembly on syncvals.syncrope.com ↗

6/1060.0%
combo-score-system

10 trials · 6/10 reached reward 1.0 · pass@1 60.0% · derived difficulty medium 30–70%

By agent

  • claude-code / claude-opus-4-810 trials · 6/10 resolved · 60.0%

Trial labels

Legitimate solve6Honest miss3Task at fault1

combo-score-system on syncvals.syncrope.com ↗

6/1060.0%
camera-shake-rig1 reward-hack

10 trials · 4/10 reached reward 1.0 · pass@1 40.0% · derived difficulty medium 30–70%

By agent

  • claude-code / claude-sonnet-4-610 trials · 4/10 resolved · 40.0%

Trial labels

Legitimate solve2Reward-hack1Honest miss1Task at fault2Harness error4

camera-shake-rig on syncvals.syncrope.com ↗

4/1040.0%
checkpoint-system

10 trials · 4/10 reached reward 1.0 · pass@1 40.0% · derived difficulty medium 30–70%

By agent

  • claude-code / claude-opus-4-810 trials · 4/10 resolved · 40.0%

Trial labels

Legitimate solve4Honest miss5Harness error1

checkpoint-system on syncvals.syncrope.com ↗

4/1040.0%
crusader-sprite-assembly1 reward-hack

10 trials · 4/10 reached reward 1.0 · pass@1 40.0% · derived difficulty medium 30–70%

By agent

  • claude-code / claude-sonnet-4-610 trials · 4/10 resolved · 40.0%

Trial labels

Legitimate solve3Reward-hack1Honest miss5Task at fault1

crusader-sprite-assembly on syncvals.syncrope.com ↗

4/1040.0%
minimap-marker-logic

10 trials · 4/10 reached reward 1.0 · pass@1 40.0% · derived difficulty medium 30–70%

By agent

  • claude-code / claude-opus-4-810 trials · 4/10 resolved · 40.0%

Trial labels

Legitimate solve4Honest miss5Task at fault1

minimap-marker-logic on syncvals.syncrope.com ↗

4/1040.0%
tile-gradient-particles1 reward-hack

10 trials · 2/10 reached reward 1.0 · pass@1 20.0% · derived difficulty hard <30%

By agent

  • claude-code / claude-sonnet-4-610 trials · 2/10 resolved · 20.0%

Trial labels

Legitimate solve1Reward-hack1Honest miss1Task at fault2Harness error5

tile-gradient-particles on syncvals.syncrope.com ↗

2/1020.0%
day-night-cycle-controller

10 trials · 1/10 reached reward 1.0 · pass@1 10.0% · derived difficulty hard <30%

By agent

  • claude-code / claude-opus-4-810 trials · 1/10 resolved · 10.0%

Trial labels

Legitimate solve1Honest miss8Task at fault1

day-night-cycle-controller on syncvals.syncrope.com ↗

1/1010.0%
minimap-uiunsolved

10 trials · 0/10 reached reward 1.0 · pass@1 0.0% · derived difficulty hard <30%

By agent

  • claude-code / claude-opus-4-810 trials · 0/10 resolved · 0.0%

Trial labels

Honest miss6Task at fault4

minimap-ui on syncvals.syncrope.com ↗

0/100.0%

Debuggingpreview

Real-world bug-fix tasks distilled from open-source issues (esbuild, klauspost/compress, rust-lang/semver), graded against each project's own tests.

3tasks
15trials
15/15resolved
100.0% of trials reached reward 1.0
TaskResolvedpass@1
evanw-esbuild-44171 reward-hack

5 trials · 5/5 reached reward 1.0 · pass@1 100.0% · derived difficulty easy ≥70%

By agent

  • codex / gpt-5.55 trials · 5/5 resolved · 100.0%

Trial labels

Legitimate solve4Reward-hack1

evanw-esbuild-4417 on syncvals.syncrope.com ↗

5/5100.0%
klauspost-compress-1115

5 trials · 5/5 reached reward 1.0 · pass@1 100.0% · derived difficulty easy ≥70%

By agent

  • codex / gpt-5.55 trials · 5/5 resolved · 100.0%

Trial labels

Legitimate solve5

klauspost-compress-1115 on syncvals.syncrope.com ↗

5/5100.0%
rust-lang-semver-305

5 trials · 5/5 reached reward 1.0 · pass@1 100.0% · derived difficulty easy ≥70%

By agent

  • codex / gpt-5.55 trials · 5/5 resolved · 100.0%

Trial labels

Legitimate solve5

rust-lang-semver-305 on syncvals.syncrope.com ↗

5/5100.0%

Post Traininglive

Long-horizon, from-scratch numpy ML research: implement reverse-mode autodiff and a training method (quantization-aware, adversarial-robust, semi-supervised, worst-group), then train to a sealed held-out metric. Tasks published blinded.

6tasks
65trials
28/65resolved
43.1% of trials reached reward 1.0
TaskResolvedpass@1
fewlabel-ssl-fixmatch2 reward-hacks

10 trials · 10/10 reached reward 1.0 · pass@1 100.0% · derived difficulty easy ≥70%

By agent

  • claude-code / claude-opus-4-810 trials · 10/10 resolved · 100.0%

Trial labels

Legitimate solve8Reward-hack2

fewlabel-ssl-fixmatch on syncvals.syncrope.com ↗

10/10100.0%
qat-int2-cifar1 reward-hack

15 trials · 9/15 reached reward 1.0 · pass@1 60.0% · derived difficulty medium 30–70%

By agent

  • claude-code / claude-opus-4-810 trials · 9/10 resolved · 90.0%
  • claude-code / claude-sonnet-4-65 trials · 0/5 resolved · 0.0%

Trial labels

Legitimate solve8Reward-hack1Honest miss6

qat-int2-cifar on syncvals.syncrope.com ↗

9/1560.0%
worst-group-spurious-dfr

10 trials · 5/10 reached reward 1.0 · pass@1 50.0% · derived difficulty medium 30–70%

By agent

  • claude-code / claude-opus-4-810 trials · 5/10 resolved · 50.0%

Trial labels

Legitimate solve5Honest miss4Harness error1

worst-group-spurious-dfr on syncvals.syncrope.com ↗

5/1050.0%
adv-robust-pgd

10 trials · 3/10 reached reward 1.0 · pass@1 30.0% · derived difficulty medium 30–70%

By agent

  • claude-code / claude-opus-4-810 trials · 3/10 resolved · 30.0%

Trial labels

Legitimate solve3Honest miss7

adv-robust-pgd on syncvals.syncrope.com ↗

3/1030.0%
reverse-engineer-decoding

10 trials · 1/10 reached reward 1.0 · pass@1 10.0% · derived difficulty hard <30%

By agent

  • claude-code / claude-opus-4-810 trials · 1/10 resolved · 10.0%

Trial labels

Legitimate solve1Honest miss9

reverse-engineer-decoding on syncvals.syncrope.com ↗

1/1010.0%
reverse-engineer-objectivesunsolved

10 trials · 0/10 reached reward 1.0 · pass@1 0.0% · derived difficulty hard <30%

By agent

  • claude-code / claude-opus-4-810 trials · 0/10 resolved · 0.0%

Trial labels

Honest miss10

reverse-engineer-objectives on syncvals.syncrope.com ↗

0/100.0%

Scientific MLlive

Physics-informed and surrogate modeling: PDE forecasting and CFD/FEA prediction, graded on quantitative predictive accuracy.

3tasks
30trials
10/30resolved
33.3% of trials reached reward 1.0
TaskResolvedpass@1
airfrans-high-reynolds-drag-extrapolation

10 trials · 4/10 reached reward 1.0 · pass@1 40.0% · derived difficulty medium 30–70%

By agent

  • claude-code / claude-opus-4-810 trials · 4/10 resolved · 40.0%

Trial labels

Legitimate solve4Honest miss6

airfrans-high-reynolds-drag-extrapolation on syncvals.syncrope.com ↗

4/1040.0%
ks-equation-1d-forecast

10 trials · 4/10 reached reward 1.0 · pass@1 40.0% · derived difficulty medium 30–70%

By agent

  • claude-code / claude-opus-4-810 trials · 4/10 resolved · 40.0%

Trial labels

Legitimate solve4Honest miss6

ks-equation-1d-forecast on syncvals.syncrope.com ↗

4/1040.0%
simjeb-bracket-fea-mass-prediction-real

10 trials · 2/10 reached reward 1.0 · pass@1 20.0% · derived difficulty hard <30%

By agent

  • claude-code / claude-opus-4-810 trials · 2/10 resolved · 20.0%

Trial labels

Legitimate solve2Honest miss8

simjeb-bracket-fea-mass-prediction-real on syncvals.syncrope.com ↗

2/1020.0%

Data Sciencelive

Modeling and statistical inference on real datasets (federated learning, event studies), graded against held-out ground truth.

2tasks
20trials
5/20resolved
25.0% of trials reached reward 1.0
TaskResolvedpass@1
product-recall-stock-price-event

10 trials · 3/10 reached reward 1.0 · pass@1 30.0% · derived difficulty medium 30–70%

By agent

  • claude-code / claude-opus-4-810 trials · 3/10 resolved · 30.0%

Trial labels

Legitimate solve3Honest miss7

product-recall-stock-price-event on syncvals.syncrope.com ↗

3/1030.0%
fedavg-federated-noniid-mnist

10 trials · 2/10 reached reward 1.0 · pass@1 20.0% · derived difficulty hard <30%

By agent

  • claude-code / claude-opus-4-810 trials · 2/10 resolved · 20.0%

Trial labels

Legitimate solve2Honest miss7Task at fault1

fedavg-federated-noniid-mnist on syncvals.syncrope.com ↗

2/1020.0%

Data Science: Robustnesslive

Bias-correction and outlier-robust analysis in R: recover trustworthy estimates from messy data, checked against reference results.

2tasks
20trials
8/20resolved
40.0% of trials reached reward 1.0
TaskResolvedpass@1
coffee-ratings-outliers

10 trials · 4/10 reached reward 1.0 · pass@1 40.0% · derived difficulty medium 30–70%

By agent

  • claude-code / claude-opus-4-810 trials · 4/10 resolved · 40.0%

Trial labels

Legitimate solve4Honest miss5Task at fault1

coffee-ratings-outliers on syncvals.syncrope.com ↗

4/1040.0%
lending-club-lgd-bias-correction-r

10 trials · 4/10 reached reward 1.0 · pass@1 40.0% · derived difficulty medium 30–70%

By agent

  • claude-code / claude-opus-4-810 trials · 4/10 resolved · 40.0%

Trial labels

Legitimate solve4Honest miss4Task at fault2

lending-club-lgd-bias-correction-r on syncvals.syncrope.com ↗

4/1040.0%

Single-task previews

ML Engineering, ML for Engineering, Product Data Science, Pharmacometrics: 4 categories holding one task apiece, each still under the 20-trial line. They are pooled into one list rather than given a section each. Every row keeps its own category, its own status and its own anchor.

4tasks
40trials
12/40resolved
30.0% of trials reached reward 1.0
TaskResolvedpass@1
airfoil-self-noiseML Engineering preview

10 trials · 4/10 reached reward 1.0 · pass@1 40.0% · derived difficulty medium 30–70%

Category ML Engineering, held at preview on 10 scored trials.

By agent

  • claude-code / claude-opus-4-810 trials · 4/10 resolved · 40.0%

Trial labels

Legitimate solve4Honest miss6

airfoil-self-noise on syncvals.syncrope.com ↗

4/1040.0%
ipl-toss-impact-analysis-rProduct Data Science preview

10 trials · 4/10 reached reward 1.0 · pass@1 40.0% · derived difficulty medium 30–70%

Category Product Data Science, held at preview on 10 scored trials.

By agent

  • claude-code / claude-opus-4-810 trials · 4/10 resolved · 40.0%

Trial labels

Legitimate solve4Honest miss2Task at fault4

ipl-toss-impact-analysis-r on syncvals.syncrope.com ↗

4/1040.0%
neonatal-drug-exposure-nlmePharmacometrics preview

10 trials · 4/10 reached reward 1.0 · pass@1 40.0% · derived difficulty medium 30–70%

Category Pharmacometrics, held at preview on 10 scored trials.

By agent

  • claude-code / claude-opus-4-810 trials · 4/10 resolved · 40.0%

Trial labels

Legitimate solve4Honest miss2Task at fault2Harness error2

neonatal-drug-exposure-nlme on syncvals.syncrope.com ↗

4/1040.0%
deepcad-canonical-equivalencegraded 0–1ML for Engineering preview

10 trials, scored on a continuous 0–1 scale: 0.441 mean, no trial at exactly 1.0, so no pass@1 and no difficulty tier.

Category ML for Engineering, held at preview on 10 scored trials.

By agent

  • claude-code / claude-opus-4-810 trials · 0.441 mean score

Trial labels

Honest miss10

deepcad-canonical-equivalence on syncvals.syncrope.com ↗

n/a0.441mean score

1 task here is graded on a continuous 0–1 score rather than pass/fail, so it has a mean score instead of a pass@1, and no trial can register as resolved, which requires a reward of exactly 1.0.

The pipeline behind this report is available for client work.

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