Benchmark Almanac

GeneBench

GPT-5.5 33.2%
Fading

Agents analyze messy genomics and quantitative biology data across 103 multi-step problems. Scored by pass rate on verifiable final answers.

GPT-5.5 Pro scored 33.2 percent at launch.

Made by
OpenAI
Released
April 2026
Kind
Genomics and life sciences
Level
Expert
Scored
Checked automatically
Answers
Short answer
Strongest model tested
GPT-5.5 Pro #14 on the capability index
Last in a launch post
April 2026, dropped before it saturated
Last model added
April 2026
2
Models scored in lab cards
2
Launch posts list it, from 1 lab

2 models share the top score of 33.2%

Best score per model as labs report them in their own cards. Labs pick their own settings, so these compare less cleanly than independent runs.

  1. 1 GPT-5.5 33.2%
  2. 2 GPT-5.5 Pro 33.2%

Source: Labs’ model cards

#ModelScoreSettingDateSource
1 GPT-5.5 33.2% Apr 2026 Lab model card
2 GPT-5.5 Pro 33.2% Apr 2026 Lab model card

Scores over time

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

Reported by the lab in its model card
0% 20% 40% 60% 80% 100% 2026 Near the ceiling (85%) GPT-5.5 0% 20% 40% 60% 80% 100% 2026 Near the ceiling (85%) GPT-5.5

Source: 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.

OpenAI
DateLaunch postScoreAs the post writes it
Apr 23, 2026 GPT-5.5 Pro 33.2 GeneBench
Apr 23, 2026 GPT-5.5 33.2 GeneBench (GPT-5.5 Pro)

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