Benchmark Almanac

BABE

GPT-5.1 52.3% leads since February 2026
Seed2.0 Lite (0428) 57.9% leads since April 2026
Fading

Models reason from experimental results in peer-reviewed biology papers to draw conclusions, with causal and cross-scale inference.

The Seed2.0 card says BABE uses interleaved text and images. Scoring and format fields are guesses from the abstract.

Released
February 2026
Kind
Genomics and life sciences
Level
Expert
Scored
Graded by a model
Answers
Open-ended
Strongest model tested
GPT-5.1 #65 on the capability index
Last in a launch post
April 2026, dropped before it saturated
Last model added
April 2026
Scores refreshed
November 12th, 2026

In the authors’ words

The rapid evolution of large language models (LLMs) has expanded their capabilities from basic dialogue to advanced scientific reasoning. However, existing benchmarks in biology often fail to assess a critical skill required of researchers: the ability to integrate experimental results with contextual knowledge to derive meaningful conclusions. To address this gap, we introduce BABE(Biology Arena BEnchmark), a comprehensive benchmark designed to evaluate the experimental reasoning capabilities of biological AI systems. BABE is uniquely constructed from peer-reviewed research papers and real-world biological studies, ensuring that tasks reflect the complexity and interdisciplinary nature of actual scientific inquiry. BABE challenges models to perform causal reasoning and cross-scale inference. Our benchmark provides a robust framework for assessing how well AI systems can reason like practicing scientists, offering a more authentic measure of their potential to contribute to biological research.

Abstract of BABE: Biology Arena BEnchmark (arXiv:2602.05857, CC0)
18
Entries on its own leaderboard, 6 models we track
2
Launch posts list it, from 1 lab
1
System card reports it, from 1 lab

GPT-5.1 leads with 52.3% among models released by November 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.

Seed2.0 Lite (0428) leads with 57.9%, 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 November 2025, and nobody has tested a newer one. Among the 20 highest-ranked models on the capability index, these have no score yet:

  1. 1 GPT-5.1 52.3%
  2. 2 Gemini-3-Pro-Preview-Exp 52%
  3. 3 o3-high.code 51.6%
  4. 4 Doubao-1.8-1228 43.3%
  5. 5 Gemini-2.5-Pro (snapshot unspecified) 42.2%
  6. 6 Claude Sonnet 4.5 thinking 41.9%
  7. 7 Doubao-1.6-1015-high.foreval 39.8%
  8. 8 Doubao-1.6-thinking.0715.foreval 39.5%
  9. 9 Doubao-1.6-1015-high.foreval (A) 39.3%
  10. 10 Claude Opus 4.1 thinking 37.4%
  11. 11 GPT-4.1 36.9%
  12. 12 Doubao-1.6-1015-high.foreval (B) 36.6%
  13. 13 QwenAPI-vl-max.latest 32.8%
  14. 14 Doubao-1.5-pro-thinking.vision.0428.eval 31.7%
  15. 15 QwenAPI-3-max-0923 26.5%
  16. 16 GPT-4o Nov 2024 23.9%
  17. 17 Doubao-1.6-flash.0828.foreval 22%
  18. 18 GLM-4.5V 20.8%

Source: Official BABE leaderboard

#EntryScoreSettingDateSource
1 GPT-5.1 52.3% Nov 2025 Official leaderboard
2 Gemini-3-Pro-Preview-Exp 52% Official leaderboard
3 o3-high.code 51.6% Official leaderboard
4 Doubao-1.8-1228 43.3% Official leaderboard
5 Gemini-2.5-Pro (snapshot unspecified) 42.2% Official leaderboard
6 Claude Sonnet 4.5 41.9% thinking Sep 2025 Official leaderboard
7 Doubao-1.6-1015-high.foreval 39.8% Official leaderboard
8 Doubao-1.6-thinking.0715.foreval 39.5% Official leaderboard
9 Doubao-1.6-1015-high.foreval (A) 39.3% Official leaderboard
10 Claude Opus 4.1 37.4% thinking Aug 2025 Official leaderboard
11 GPT-4.1 36.9% Apr 2025 Official leaderboard
12 Doubao-1.6-1015-high.foreval (B) 36.6% Official leaderboard
13 QwenAPI-vl-max.latest 32.8% Official leaderboard
14 Doubao-1.5-pro-thinking.vision.0428.eval 31.7% Official leaderboard
15 QwenAPI-3-max-0923 26.5% Official leaderboard
16 GPT-4o Nov 2024 23.9% Nov 2024 Official leaderboard
17 Doubao-1.6-flash.0828.foreval 22% Official leaderboard
18 GLM-4.5V 20.8% Aug 2025 Official leaderboard
#ModelScoreSettingDateSource
1 Seed2.0 Lite (0428) 57.9% Apr 2026 Lab model card
2 GPT-5.1 52.3% Nov 2025 Official leaderboard
3 Seed2.0 Pro 50% Feb 2026 Lab model card
4 Claude Sonnet 4.5 41.9% thinking Sep 2025 Official leaderboard
5 Claude Opus 4.1 37.4% thinking Aug 2025 Official leaderboard
6 GPT-4.1 36.9% Apr 2025 Official leaderboard
7 GPT-4o Nov 2024 23.9% Nov 2024 Official leaderboard
8 GLM-4.5V 20.8% Aug 2025 Official leaderboard

Labs report scores for 2 models in their cards. Switch the scores above to rank them together.

Number one over time 2 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. We draw one row each for the benchmark’s own leaderboard and what labs claim in their cards.

OpenAI ByteDance Seed
Own leaderboard Not tested since Feb 2026
GPT-5.1 52.3%
Lab claims Not tested since Apr 2026

Sources: Official BABE leaderboard and labs’ model cards

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 Reported by the lab in its model card Best so far
0% 20% 40% 60% 80% 100% 2025 2026 Near the ceiling (85%) Seed2.0 Lite (0428) GPT-5.1 Claude Sonnet 4.5 Claude Opus 4.1 GPT-4.1 GPT-4o 0% 20% 40% 60% 80% 100% 2025 2026 Near the ceiling (85%) Seed2.0 Lite (0428) Claude Sonnet 4.5

Sources: Official BABE leaderboard and labs’ model cards

Labs headline it less often now, last in April 2026

Launch posts from every lab that has listed it, one tick per post. Tall colored ticks include it, and short gray ones leave it out.

ByteDance Seed
DateLaunch postScoreAs the post writes it
Apr 28, 2026 Seed2.0 Lite (0428) 57.9 BABE
Feb 14, 2026 Seed2.0 Pro 50 BABE

One system card reports it

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.

DateDocumentScoreAs the document writes itSection
Feb 14, 2026 Seed2.0 Pro model card 50 BABE (Table 3). Its rival columns repeat the BIObench row of Table 13 Capabilities

More in Biology and chemistry

All 108 in Biology and chemistry
  • GeneBench Pro In use Agents analyze messy simulated genomics and biology datasets to estimate a decision-relevant quantity across 129 problems. Scored automatically against known answers. GPT-5.6 Sol 31.5%
  • SUPERChem In use Models solve 500 expert-written chemistry reasoning problems, offered in multimodal and text-only forms. Expert solution paths also allow a reasoning path score. Tencent Hy4 preview 66.4%
  • LifeSciBench In use Models complete 750 expert-written life science research tasks, often with attached figures, tables, or sequence files. Graded against expert rubrics as score and pass rate. GPT-Rosalind-6 61.3%
  • MedChemBench (OpenAI) In use Models answer chemistry questions from an OpenAI internal set, grouped with OpenAI's life science research evaluations. OpenAI has not published the task format. GPT-Rosalind-6 49.6%
  • ProtocolQA Open-Ended In use Models correct errors in published lab protocols using open-ended questions adapted from LAB-Bench ProtocolQA. Scored as pass@1. GPT-6 Cyber 47.2%
  • MolecularIQ In use Models answer questions about molecular graphs, such as counting, indexing and constrained generation, and a symbolic checker verifies each answer. gpt-oss-120b 47.5%