Seed-Prover 1.5
Seed-Prover 1.5 places in the top three on PutnamBench.
5
Benchmarks with a score
0
Ranked first, out of five or more models
1
In the top three
ByteDance Seed Dec 2025 Seed-Prover 1.5
Closed weights Mid-size
No Epoch Capabilities Index score yet
- PutnamBench 86.5% #2 /14
Where it ranks
Its best score on each benchmark, and where that ranks among every model with a score there. We rank each model once, at its best setting.
Math and science
| Benchmark | Score | Rank | Source | |
|---|---|---|---|---|
| PutnamBench | 86.5% | #2 of 14 | Official leaderboard | |
| CombiBench | 48% | #1 of 3 | Model card | |
| FATE-H | 80% | #2 of 2 | Model card | |
| FATE-X | 33% | #2 of 2 | Model card | |
| Putnam 2025 | 11.0 | #2 of 2 | Model card |
Its launch post
The benchmarks the lab chose to headline, with the scores it gave.