Seed-OSS Base on MMMU: score, rank and what it means
Seed-OSS Base scores 68.5 on MMMU, placing it #337 of 600 models in the index. The benchmark average is 67.1 and the leader is GPT-5.2 Max at 86.9.
Score distribution
The chart shows the top 10 models on MMMU, with Seed-OSS Base highlighted. Longer bars mean higher scores.
Top 10 leaderboard
| # | Model | Provider | Context | Input / 1M | Avg score |
|---|---|---|---|---|---|
| 1 | GPT-5.2 Max | OpenAI | 1000000 | $21.39 | 89.2 |
| 2 | GPT-5.1 Reasoning | OpenAI | 400000 | $20.27 | 88.3 |
| 3 | GPT-5.2 | OpenAI | 2000000 | $19.71 | 88.0 |
| 4 | Claude Sonnet 4.5 Reasoning | Anthropic | 400000 | $19.48 | 87.7 |
| 5 | GPT-5.1 Max | OpenAI | 2000000 | $20.50 | 87.9 |
| 6 | Grok 4 Pro | xAI | 1000000 | $19.00 | 85.4 |
| 7 | Claude Opus 4.5 Reasoning | Anthropic | 2000000 | $20.91 | 88.2 |
| 8 | Claude Sonnet 4.5 Pro | Anthropic | 1000000 | $18.73 | 86.7 |
| 9 | GPT-5.2 Pro | OpenAI | 2000000 | $21.32 | 89.6 |
| 10 | GPT-5.2 Vision | OpenAI | 1000000 | $19.03 | 87.4 |
What this score means
On MMMU, Seed-OSS Base sits at #337 of 600. The leader, GPT-5.2 Max, scores 86.9, so the gap to the top is 18.4 points. The median model in this index scores 70.0, which puts Seed-OSS Base below the midpoint.
ByteDance models average 69.6 on this benchmark. Seed-OSS Base is 1.1 points below that provider line, so it is a weaker result than the average ByteDance model.
Among open-weight models, the average is 65.1. Seed-OSS Base is 3.4 points above that group. This is the more useful comparison if you are shortlisting within the same tier rather than across the whole index.
Read a 68.5 as a relative signal, not an absolute guarantee. Benchmark scores depend on prompt format, evaluation harness and contamination controls. Use this page to narrow the shortlist, then test the model on your own data.
Price context
At $3.14 per million input tokens, Seed-OSS Base is below the median input price of $4.00 across the 600 models scored on MMMU. The models immediately around it in the ranking are shown below so you can compare score and price together.
| Model | Provider | Context | Input / 1M | Avg score |
|---|---|---|---|---|
| Yi-Large Base | 01.AI | 16384 | $2.78 | 70.3 |
| Fusion | OpenRouter | 16384 | $8.41 | 71.1 |
| Mistral Small 3 Base | Mistral AI | 16384 | $3.19 | 72.7 |
| Qwen3-Max Nano | Alibaba Cloud | 65536 | $8.31 | 71.7 |
| Seed-OSS Base | ByteDance | 16384 | $3.14 | 72.2 |
| Firefunction Pro | Fireworks AI | 16384 | $9.05 | 72.9 |
| Codestral Base | Mistral AI | 8192 | $3.31 | 73.1 |
Other benchmarks for Seed-OSS Base
| Benchmark | Score | Rank | Percentile | Relative |
|---|---|---|---|---|
| MMLU-Pro | 75.8 | 311 | 48th | |
| GPQA Diamond | 68.1 | 311 | 48th | |
| SWE-bench Verified | 60.5 | 317 | 47th | |
| HumanEval | 78.1 | 288 | 52th | |
| MATH-500 | 73.4 | 353 | 41th | |
| AIME 2025 | 67.2 | 310 | 48th | |
| LiveCodeBench | 65.5 | 283 | 53th | |
| IFEval | 79.0 | 356 | 41th | |
| TruthfulQA | 74.0 | 353 | 41th | |
| HellaSwag | 83.7 | 296 | 51th | |
| Arena Elo | 1360.4 | 343 | 43th |
FAQ
What score does Seed-OSS Base get on MMMU?
Seed-OSS Base scores 68.5 on MMMU in this index. The benchmark average is 67.1 and the top score is 86.9.
How does Seed-OSS Base rank on MMMU?
It ranks #337 of 600 models, in the 44th percentile. The leader is GPT-5.2 Max at 86.9.
Is Seed-OSS Base good at MMMU?
It is below the median for this benchmark, so test it carefully before relying on it for this capability. The result should be read alongside its price and context window.
How is the MMMU score calculated?
MMMU is a multimodal benchmark. Scores in this index are modelled estimates on a 0–100 scale (or Elo for Arena), derived from capability tier and benchmark difficulty. They are not official leaderboard results.
What does Seed-OSS Base cost?
Seed-OSS Base costs $3.14 per million input tokens and $11.67 per million output tokens.