Kernels task (Anthropic)
Only in system cards
Agents optimize compute kernels in a performance engineering challenge. Scored by speedup.
In-house Anthropic evaluation. The tasks are not public.
Made by Anthropic Released May 2025 GPU kernels Tasks kept private Last in a system card Jul 2026
Last model added Jul 2026
- Level
- Expert Specialists with years of training, often over hours of work
- Scored
- Checked automatically A program checks the result against an answer key, unit tests or the expected final state.
- Answers
- Code A program or patch run against tests.
11
System cards report it, from 1 lab
No scores here yet
No lab, leaderboard or Epoch AI run has reported a score for Kernels task (Anthropic) yet.
Labs report it only in system cards
We read the headline results of 479 launch posts from 51 labs, and none of them list this benchmark. Some system cards do, below.
11 system cards report it, from 1 lab
Besides launch posts, we read the system cards, model cards and technical reports labs publish with a release. They report far more, including safety and frontier-risk tests.
| Date | Document | Score | As the document writes it | Section |
|---|---|---|---|---|
| 24 Jul 2026 | Claude Opus 5 system card | 449.5 | Kernel task, best speedup on the hard task, standard scaffold, earlier snapshot (Table 2.3.5.A) | AI R&D risk |
| 30 Jun 2026 | Claude Sonnet 5 system card | 284.5 | Kernel task, best speedup on hard task, standard scaffold, 284.52x (Table 2.3.3.A) | AI R&D risk |
| 16 Apr 2026 | Claude Opus 4.7 system card | 371.8 | Kernel task, best speedup on hard task, standard scaffold, 371.75x (Table 2.3.4.A) | AI R&D risk |
| 7 Apr 2026 | Claude Mythos Preview system card | 399.4 | Kernel task, best speedup on hard task, standard scaffold, 399.42x (Table 2.3.3.A) | AI R&D risk |
| 17 Feb 2026 | Claude Sonnet 4.6 system card | 222.5 | Kernels task, best speedup 222.5x with standard scaffold (6.3.3.1) | AI R&D risk |
| 5 Feb 2026 | Claude Opus 4.6 system card | 190 | Kernels task, best speedup 190x with the standard scaffold; 427x with an experimental scaffold (8.3.3.1) | AI R&D risk |
| 24 Nov 2025 | Claude Opus 4.5 system card | 252.4 | Kernels task, hard variant, best speedup 252.42x (7.3.2.1) | AI R&D risk |
| 29 Sep 2025 | Claude Sonnet 4.5 system card | 108.6 | Kernels task, hard variant, best run speedup 108.64x (9.3.3.1) | AI R&D risk |
| 5 Aug 2025 | Claude Opus 4.1 system card addendum | 58.5 | Kernel optimization, best speedup 58.47x on the hard variant (6.4.1) | AI R&D risk |
| 22 May 2025 | Claude Sonnet 4 system card | 41.7 | Kernels task, 41.73x speedup in the best run (7.3.3.1) | AI R&D risk |
| 22 May 2025 | Claude Opus 4 system card | 72.7 | Kernels task, 72.65x speedup in the best run (hard variant per the Opus 4.1 addendum). The 7.3 summary says ~74x (7.3.3.1) | AI R&D risk |
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