Benchmark Almanac

LABBench2 ProtocolQA2

Gemini 3 Pro 61.6% leads since February 2026
Not in model cards

Models find and fix errors planted in published lab protocols, answering in open response. The ProtocolQA2 subtask of LABBench2.

125 tasks in the protocolqa2 config of the LABBench2 dataset. Open response replaces multiple choice, so scores are not comparable with the LAB-Bench subtask.

Released
February 2026
Kind
Genomics and life sciences
Level
Expert
Scored
Checked automatically
Answers
Short answer
Tasks
Public, plus a private test set
Strongest model tested
GPT-5.2 Pro #31 on the capability index
Last model added
February 2026
Scores refreshed
November 12th, 2026

In the authors’ words

Optimism for accelerating scientific discovery with AI continues to grow. Current applications of AI in scientific research range from training dedicated foundation models on scientific data to agentic autonomous hypothesis generation systems to AI-driven autonomous labs. The need to measure progress of AI systems in scientific domains correspondingly must not only accelerate, but increasingly shift focus to more real-world capabilities. Beyond rote knowledge and even just reasoning to actually measuring the ability to perform meaningful work. Prior work introduced the Language Agent Biology Benchmark LAB-Bench as an initial attempt at measuring these abilities. Here we introduce an evolution of that benchmark, LABBench2, for measuring real-world capabilities of AI systems performing useful scientific tasks. LABBench2 comprises nearly 1,900 tasks and is, for the most part, a continuation of LAB-Bench, measuring similar capabilities but in more realistic contexts. We evaluate performance of current frontier models, and show that while abilities measured by LAB-Bench and LABBench2 have improved substantially, LABBench2 provides a meaningful jump in difficulty (model-specific accuracy differences range from -26% to -46% across subtasks) and underscores continued room for performance improvement. LABBench2 continues the legacy of LAB-Bench as a de facto benchmark for AI scientific research capabilities and we hope that it continues to help advance development of AI tools for these core research functions. To facilitate community use and development, we provide the task dataset at https://huggingface.co/datasets/futurehouse/labbench2 and a public eval harness at https://github.com/EdisonScientific/labbench2.

Abstract of LABBench2: An Improved Benchmark for AI Systems Performing Biology Research (arXiv:2604.09554, CC0)
5
Models scored on its own leaderboard

Gemini 3 Pro leads with 61.6% among models released by February 2026

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.

The newest model with a score here came out in February 2026, and nobody has tested a newer one. Among the 20 highest-ranked models on the capability index, these have no score yet:

  1. 1 Gemini 3 Pro tools,high; mode file 61.6%
  2. 2 Claude Opus 4.6 tools,high; mode file 58.4%
  3. 3 Claude Opus 4.5 tools,high; mode file 51.2%
  4. 4 GPT-5.2 Pro tools,high; mode file 50%
  5. 5 GPT-5.2 tools,high; mode file 41.6%

Source: Official LABBench2 ProtocolQA2 leaderboard

#ModelScoreSettingDateSource
1 Gemini 3 Pro 61.6% tools,high; mode file, tools Nov 2025 Official leaderboard
2 Claude Opus 4.6 58.4% tools,high; mode file, tools Feb 2026 Official leaderboard
3 Claude Opus 4.5 51.2% tools,high; mode file, tools Nov 2025 Official leaderboard
4 GPT-5.2 Pro 50% tools,high; mode file, tools Dec 2025 Official leaderboard
5 GPT-5.2 41.6% tools,high; mode file, tools Dec 2025 Official leaderboard

Number one over time

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

Google DeepMind
Own leaderboard Not tested since Feb 2026
Gemini 3 Pro 61.6%

Source: Official LABBench2 ProtocolQA2 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% 20% 40% 60% 80% 100% 2026 Near the ceiling (85%) Gemini 3 Pro 0% 20% 40% 60% 80% 100% 2026 Near the ceiling (85%) Gemini 3 Pro

Source: Official LABBench2 ProtocolQA2 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.

Versions

We switch the top row to each new version when it comes out. Open it for one row per version. An old version stays in play while people still test it, so whoever first takes it past 85% gets credit for closing it out.

OpenAI Anthropic Google DeepMind
LABBench2 ProtocolQA2 Not tested since Feb 2026
Gemini 3 Pro 61.6%
LAB-Bench ProtocolQA Passed 85% in Nov 2025, by Gemini 3 Pro
LABBench2 ProtocolQA2 Not tested since Feb 2026
Gemini 3 Pro 61.6%

Sources: Official leaderboards and labs’ model cards

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