AIRS-Bench
Agents carry out 20 AI research tasks taken from recent ML papers, without baseline code. Scores are normalized so that 1.0 matches the published human state of the art.
Meta reports a valid submission rate and an average normalized score.
- Made by
- Meta FAIR (Lupidi et al.)
- Released
- February 2026
- Kind
- AI research tasks
- Level
- Research frontier
- Scored
- Checked automatically
- Answers
- Agent task
- Tasks
- All public
- Strongest model tested
-
Muse Spark 1.1 #47 on the capability index
- Last in a system card
- July 2026
- Last model added
- July 2026
- Scores refreshed
- November 12th, 2026
In the authors’ words
LLM agents hold significant promise for advancing scientific research. To accelerate this progress, we introduce AIRS-Bench (the AI Research Science Benchmark), a suite of 20 tasks sourced from state-of-the-art machine learning papers. These tasks span diverse domains, including language modeling, mathematics, bioinformatics, and time series forecasting. AIRS-Bench tasks assess agentic capabilities over the full research lifecycle – including idea generation, experiment analysis and iterative refinement – without providing baseline code. The AIRS-Bench task format is versatile, enabling easy integration of new tasks and rigorous comparison across different agentic frameworks. We establish baselines using frontier models paired with both sequential and parallel scaffolds. Our results show that agents exceed human SOTA in four tasks but fail to match it in sixteen others. Even when agents surpass human benchmarks, they do not reach the theoretical performance ceiling for the underlying tasks. These findings indicate that AIRS-Bench is far from saturated and offers substantial room for improvement. We open-source the AIRS-Bench task definitions and evaluation code to catalyze further development in autonomous scientific research.
gpt-oss-120b leads with 0.40 among models released by September 2025
Best score per entry from the benchmark's own leaderboard, read on November 12th, 2026. Where a model ran with several settings or harnesses, we keep its best. Names in gray aren't in our model list: fine-tunes, agent systems, products and older models. They don't count toward leaders.
Muse Spark 1.1 leads with 0.77, claims included
Best score per model from every source, including labs’ own numbers and claims Epoch AI collected from reports and papers. Labs pick their own settings, so a claim can beat an independent run of the same model.
The newest model with a score here came out in September 2025, and nobody has tested a newer one. Among the 20 highest-ranked models on the capability index, these have no score yet:
- Claude Fable 5.2
-
Gemini 4 Carbon
- GPT-6 Astra
- Claude Opus 5.5
- and 16 more
- 1 gpt-oss-120b 0.40
- 2 gpt-oss-20b 0.40
- 3 o3-mini 0.39
- 4 GPT-4o (snapshot unspecified) 0.31
- 5
Code World Model (CWM) 0.30
- 6
Devstral Small 1.0 0.18
Source: Official AIRS-Bench leaderboard
- 1
Muse Spark 1.1 0.77
- 2
Muse Spark 0.65
- 3 gpt-oss-120b 0.40
- 4 gpt-oss-20b 0.40
- 5 o3-mini 0.39
- 6
Code World Model (CWM) 0.30
- 7
Devstral Small 1.0 0.18
Sources: Labs’ model cards and official AIRS-Bench leaderboard
| # | Entry | Score | Setting | Date | Source |
|---|---|---|---|---|---|
| 1 | gpt-oss-120b | 0.40 | Greedy | Aug 2025 | Official leaderboard |
| 2 | gpt-oss-20b | 0.40 | Greedy | Aug 2025 | Official leaderboard |
| 3 | o3-mini | 0.39 | Greedy | Jan 2025 | Official leaderboard |
| 4 | GPT-4o (snapshot unspecified) | 0.31 | Greedy | Feb 2026 | Official leaderboard |
| 5 | | 0.30 | MLGym | Sep 2025 | Official leaderboard |
| 6 | | 0.18 | Greedy | May 2025 | Official leaderboard |
| # | Model | Score | Setting | Date | Source |
|---|---|---|---|---|---|
| 1 | | 0.77 | Jul 2026 | Lab model card | |
| 2 | | 0.65 | Jun 2026 | Lab model card | |
| 3 | gpt-oss-120b | 0.40 | Greedy | Aug 2025 | Official leaderboard |
| 4 | gpt-oss-20b | 0.40 | Greedy | Aug 2025 | Official leaderboard |
| 5 | o3-mini | 0.39 | Greedy | Jan 2025 | Official leaderboard |
| 6 | | 0.30 | MLGym | Sep 2025 | Official leaderboard |
| 7 | | 0.18 | Greedy | May 2025 | Official leaderboard |
Labs report scores for 2 models in their cards. Switch the scores above to rank them together.
Number one over time 3 models have held number one with claims included since its release in February 2026
Lab claims count from the day the card came out, independent runs from the model’s release.
Source: Official AIRS-Bench leaderboard
Scores over time
All the scores we have, one dot each, so a model tested at several settings appears more than once.
Sources: Official AIRS-Bench leaderboard and labs’ model cards
Labs report it only in system cards
We read the headline results of 522 launch posts from 52 labs, and none of them list this benchmark. Some system cards do, below.
2 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 |
|---|---|---|---|---|
| Jul 9, 2026 | | 0.77 | AIRS-Bench average normalized score, Muse Spark 1.1 (Table 6). Table 1 shows 77.0. Valid submission rate 99.00 | AI R&D risk |
| Jun 12, 2026 | | 0.65 | AIRS-Bench average normalized score (Table 12). Table 1 shows 64.8 as ANS x 100 | AI R&D risk |
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