Benchmark Almanac

AutoResearchExam

Claude Opus 5.5 0.61 leads since September 2026
Not in model cards

Agents get 24 hours on a CPU or GPU machine to improve solutions to open-ended ML research tasks through experiments. The score is the area under the improvement curve on a hidden test set, rewarding both quality and speed.

29 tasks over seven areas, including model training, data curation, AI safety and interpretability. Released September 9th, 2026. The hidden-test metric is meant to catch agents that overfit the visible data.

Made by
Bespoke Labs
Released
September 2026
Kind
Machine learning engineering
Level
Research frontier
Scored
Checked automatically
Answers
Agent task
Tasks
All public
Strongest model tested
GPT-6 Astra #3 on the capability index
Last model added
September 2026
Scores refreshed
November 12th, 2026
12
Models scored on its own leaderboard

Claude Opus 5.5 leads with 0.61

Best score per model from the benchmark's own leaderboard, read on November 12th, 2026. Where a model ran with several settings or harnesses, we keep its best.

  1. 1 Claude Opus 5.5 0.61
  2. 2 Claude Fable 5.1 0.60
  3. 3 GPT-6 Astra 0.60
  4. 4 Gemini 4 Argon 0.59
  5. 5 Claude Opus 5 0.58
  6. 6 Grok 4.7 0.52
  7. 7 GPT-5.6 Sol 0.51
  8. 8 Grok 4.6 0.49
  9. 9 Gemini 3.8 Flash 0.48
  10. 10 Kimi K3 0.43
  11. 11 Qwen 3.8 Max 0.42
  12. 12 Muse Spark 1.3 0.38

Source: Official AutoResearchExam leaderboard

#ModelScoreSettingDateSource
1 Claude Opus 5.5 0.61 Sep 2026 Official leaderboard
2 Claude Fable 5.1 0.60 Sep 2026 Official leaderboard
3 GPT-6 Astra 0.60 Sep 2026 Official leaderboard
4 Gemini 4 Argon 0.59 Sep 2026 Official leaderboard
5 Claude Opus 5 0.58 Jul 2026 Official leaderboard
6 Grok 4.7 0.52 Sep 2026 Official leaderboard
7 GPT-5.6 Sol 0.51 Jul 2026 Official leaderboard
8 Grok 4.6 0.49 Aug 2026 Official leaderboard
9 Gemini 3.8 Flash 0.48 Sep 2026 Official leaderboard
10 Kimi K3 0.43 Jul 2026 Official leaderboard
11 Qwen 3.8 Max 0.42 Aug 2026 Official leaderboard
12 Muse Spark 1.3 0.38 Sep 2026 Official leaderboard

2 models have held number one on the official leaderboard since its release in September 2026

Lab claims count from the day the card came out, independent runs from the model’s release.

Anthropic
Own leaderboard 2 leaders

Source: Official AutoResearchExam leaderboard

Scores over time

All the scores we have, one dot each, so a model tested at several settings appears more than once.

On the benchmark’s own leaderboard
0.40 0.50 0.60 0.40 0.50 0.60

Source: Official AutoResearchExam leaderboard

No lab model card reports it yet

We read the headline results of 522 launch posts from 52 labs, and none of them list this benchmark.

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