Benchmark Almanac

BioSecBench-Surveillance

Claude Opus 5.5 60.8% leads since September 2026
Only in system cards

Agents turn raw pathogen sequencing data into surveillance results. The endpoint pass rate excludes refused runs.

Only a public subset is on GitHub. LatchBio keeps the full set under restricted access.

Made by
LatchBio
Released
July 2026
Kind
Genomics and life sciences
Level
Expert
Scored
Checked automatically
Answers
Agent task
Tasks
Public, plus a private test set
Strongest model tested
GPT-6 Astra #3 on the capability index
Last in a system card
September 2026
Last model added
October 2026
Scores refreshed
November 12th, 2026

In the authors’ words

As pathogen genomic surveillance scales, the bottleneck is shifting from data generation to analysis. We present BioSecBench-Surveillance, a verifiable benchmark of 100 evaluations testing whether AI agents can infer the right analysis pipeline from raw sequencing data and surveillance context. Each evaluation gives an agent only the data and context a human analyst would have, then grades its structured answer deterministically. The tasks span seven categories, from taxonomic classification to genetic-engineering detection, across diverse sample types and sequencing technologies. Across 3,962 gradable attempts from sixteen model-harness pairs, the strongest configuration cleared only about half. Opus 4.8 with PI led at 50.2 percent, with a 95 percent confidence interval of 40.1 to 60.3 percent across 83 evaluations, tied with GPT-5.5 with Codex at 50.2 percent, with a 95 percent confidence interval of 40.8 to 59.6 percent, followed by Opus 4.7 with PI at 49.6 percent, with a 95 percent confidence interval of 40.0 to 59.2 percent, and Sonnet 4.6 with PI at 48.6 percent, with a 95 percent confidence interval of 38.9 to 58.3 percent. Even when agents invoked the correct workflows, their mistakes came from the choices around them, such as which references, thresholds, filters, and normalization to apply. BioSecBench-Surveillance provides a standard for measuring whether agents can be trusted to perform genomic surveillance when the next outbreak arrives.

Abstract of BioSecBench-Surveillance: A Verifiable Benchmark for AI Agents in Pathogen Genomic Surveillance (arXiv:2607.19262, CC0)
27
Models scored on its own leaderboard
1
System card reports it, from 1 lab

Claude Opus 5.5 leads with 60.8%

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 LSVP 60.8%
  2. 2 Gemini 4 Argon 59.8%
  3. 3 Claude Sonnet 5.5 LSVP 54.6%
  4. 4 Claude Opus 5 51.5%
  5. 5 DeepSeek V4.1 Flash 51.5%
  6. 6 GPT-6.1 Sol 50.8%
  7. 7 Claude Fable 5.1 LSVP 49%
  8. 8 GPT-6 Astra 48.5%
  9. 9 Grok 4.6 48%
  10. 10 Grok 4.7 48%
  11. 11 GPT-6 Sol 47.7%
  12. 12 GPT-5.6 Sol 47.3%
  13. 13 GPT-5.5 47.1%
  14. 14 Claude Opus 4.8 46.9%
  15. 15 Claude Opus 4.7 45.8%
  16. 16 Gemini 3.8 Flash 44.1%
  17. 17 GPT-5.6 Luna 43.2%
  18. 18 Gemini 3.7 Flash 41.5%
  19. 19 GPT-6 Luna 41.5%
  20. 20 GPT-6.1 Terra 39.9%
  21. 21 Claude Sonnet 5 39%
  22. 22 Kimi K3 38.6%
  23. 23 GLM-5.3 36.6%
  24. 24 Claude Sonnet 4.6 34.5%
  25. 25 Mistral Large 4 34%
  26. 26 Nemotron 3 Ultra 21.2%
  27. 27 Nemotron 3.5 Lightning 30B-A3B 14.1%

Source: Official BioSecBench-Surveillance leaderboard

#ModelScoreSettingDateSource
1 Claude Opus 5.5 60.8% LSVP, Pi Sep 2026 Official leaderboard
2 Gemini 4 Argon 59.8% Pi Sep 2026 Official leaderboard
3 Claude Sonnet 5.5 54.6% LSVP, Claude Code Sep 2026 Official leaderboard
4 Claude Opus 5 51.5% Pi Jul 2026 Official leaderboard
5 DeepSeek V4.1 Flash 51.5% Pi Sep 2026 Official leaderboard
6 GPT-6.1 Sol 50.8% Pi Sep 2026 Official leaderboard
7 Claude Fable 5.1 49% LSVP, Pi Sep 2026 Official leaderboard
8 GPT-6 Astra 48.5% Pi Sep 2026 Official leaderboard
9 Grok 4.6 48% Grok Build Aug 2026 Official leaderboard
10 Grok 4.7 48% Pi Sep 2026 Official leaderboard
11 GPT-6 Sol 47.7% Pi Sep 2026 Official leaderboard
12 GPT-5.6 Sol 47.3% Codex Jul 2026 Official leaderboard
13 GPT-5.5 47.1% Pi Apr 2026 Official leaderboard
14 Claude Opus 4.8 46.9% Pi May 2026 Official leaderboard
15 Claude Opus 4.7 45.8% Pi Apr 2026 Official leaderboard
16 Gemini 3.8 Flash 44.1% Pi Sep 2026 Official leaderboard
17 GPT-5.6 Luna 43.2% Codex Jul 2026 Official leaderboard
18 Gemini 3.7 Flash 41.5% Pi Aug 2026 Official leaderboard
19 GPT-6 Luna 41.5% Pi Sep 2026 Official leaderboard
20 GPT-6.1 Terra 39.9% Pi Oct 2026 Official leaderboard
21 Claude Sonnet 5 39% Pi Jun 2026 Official leaderboard
22 Kimi K3 38.6% Pi Jul 2026 Official leaderboard
23 GLM-5.3 36.6% Pi Aug 2026 Official leaderboard
24 Claude Sonnet 4.6 34.5% Claude Code Feb 2026 Official leaderboard
25 Mistral Large 4 34% Pi Oct 2026 Official leaderboard
26 Nemotron 3 Ultra 21.2% Pi Jun 2026 Official leaderboard
27 Nemotron 3.5 Lightning 30B-A3B 14.1% Pi Aug 2026 Official leaderboard

Labs report scores for 1 model in their cards. We plot every source in the charts below.

4 models have held number one on the official leaderboard since its release in July 2026

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

OpenAI Anthropic
Own leaderboard 4 leaders

Source: Official BioSecBench-Surveillance 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 Reported by the lab in its model card Best so far
0% 20% 40% 60% 80% 100% 2026 2027 Near the ceiling (85%) Claude Opus 5.5 Claude Opus 5 GPT-5.6 Sol GPT-5.5 Claude Sonnet 4.6 0% 20% 40% 60% 80% 100% 2026 2027 Near the ceiling (85%) Claude Opus 5.5 Claude Opus 5

Sources: Official BioSecBench-Surveillance 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.

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
Sep 21, 2026 Grok 4.7 model card 48 BioSecBench Surveillance, endpoint pass rate, xhigh, Grok Build harness (7.1 table) Bio and chem risk

One lab claim next to the leaderboard

Each score a lab reported for its own model, beside the same model's best score on the leaderboard. Gaps mostly come from different harnesses, effort levels and task subsets. 1 of them match, which usually means one side copied the other. Every benchmark.

Model Lab says Board says Gap
Grok 4.7 48% BioSecBench Surveillance, endpoint pass rate, xhigh, Grok Build harness (7.1 table) 48% Leaderboard, Pi Same

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All 108 in Biology and chemistry
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