BIOBench (ByteDance Seed)
Seed2.0 Pro 53.5% leads since Feb 2026 Fading Models answer 150 olympiad-level biology questions, 80% of them with images. Domain experts annotated and reviewed each question.
In-house Seed benchmark. It is a different test from BioBench by Samuel Stevens (arXiv 2511.16315). Format is a guess.
- Level
- Competition The strongest students, in olympiad-style contests
- Scored
- Checked automatically A program checks the result against an answer key, unit tests or the expected final state.
- Answers
- Short answer A number, word or short string matched to a key.
Seed2.0 Pro leads with 53.5%
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 Seed2.0 Pro 53.5%
- 2 Seed1.8 42.3%
| # | Model | Score | Setting | Date | Source |
|---|---|---|---|---|---|
| 1 | Seed2.0 Pro | 53.5% | Feb 2026 | Model card | |
| 2 | Seed1.8 | 42.3% | Dec 2025 | Model card |
2 models have held number one since its release in Dec 2025
Lab claims count from the day the card came out, independent runs from the model’s release.
Scores over time
All the scores we have, one dot each, so a model tested at several settings appears more than once.
Labs headline it less often now, last in Dec 2025
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.
| Date | Launch post | Score | As the post writes it |
|---|---|---|---|
| 18 Dec 2025 | Seed1.8 | 42.3 | BIOBench (internal) |
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 |
|---|---|---|---|---|
| 21 Mar 2026 | Seed1.8 model card | 42.3 | BIOBench (Table 1) | Capabilities |
| 14 Feb 2026 | Seed2.0 Pro model card | 53.5 | BIObench (Table 13). Its rival columns repeat the BABE row of Table 3 | Capabilities |
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