Yi-Lightning Chat on MMMU: score, rank and what it means
Yi-Lightning Chat scores 74.2 on MMMU, placing it #182 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 Yi-Lightning Chat 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, Yi-Lightning Chat sits at #182 of 600. The leader, GPT-5.2 Max, scores 86.9, so the gap to the top is 12.7 points. The median model in this index scores 70.0, which puts Yi-Lightning Chat above the midpoint.
01.AI models average 63.2 on this benchmark. Yi-Lightning Chat is 11.0 points above that provider line, so it is a stronger result than the average 01.AI model.
Among multimodal models, the average is 74.3. Yi-Lightning Chat is 0.1 points below that group. This is the more useful comparison if you are shortlisting within the same tier rather than across the whole index.
Read a 74.2 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 $3.79 per million input tokens, Yi-Lightning Chat 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 |
|---|---|---|---|---|
| DeepSeek-R1 Base | DeepSeek | 400000 | $5.05 | 80.1 |
| Llama 3 DeepInfra Instruct | DeepInfra | 65536 | $3.84 | 75.5 |
| Llama 3.1 | Meta AI | 200000 | $4.16 | 76.3 |
| Nemotron 4 Instruct | NVIDIA | 65536 | $4.10 | 76.4 |
| Yi-Lightning Chat | 01.AI | 32768 | $3.79 | 75.5 |
| DeepSeek-Coder | DeepSeek | 32768 | $4.55 | 78.1 |
| Llama 3 DeepInfra | DeepInfra | 128000 | $3.67 | 74.0 |
Other benchmarks for Yi-Lightning Chat
| Benchmark | Score | Rank | Percentile | Relative |
|---|---|---|---|---|
| MMLU-Pro | 77.3 | 270 | 55th | |
| GPQA Diamond | 69.8 | 274 | 54th | |
| SWE-bench Verified | 62.6 | 266 | 56th | |
| HumanEval | 80.0 | 234 | 61th | |
| MATH-500 | 81.3 | 184 | 69th | |
| AIME 2025 | 69.4 | 270 | 55th | |
| LiveCodeBench | 67.5 | 239 | 60th | |
| IFEval | 83.5 | 234 | 61th | |
| TruthfulQA | 77.8 | 262 | 56th | |
| HellaSwag | 86.7 | 189 | 69th | |
| Arena Elo | 1378.6 | 279 | 54th |
FAQ
What score does Yi-Lightning Chat get on MMMU?
Yi-Lightning Chat scores 74.2 on MMMU in this index. The benchmark average is 67.1 and the top score is 86.9.
How does Yi-Lightning Chat rank on MMMU?
It ranks #182 of 600 models, in the 70th percentile. The leader is GPT-5.2 Max at 86.9.
Is Yi-Lightning Chat good at MMMU?
Yes, relative to the index: it is above the median and inside the top half of scores. 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 Yi-Lightning Chat cost?
Yi-Lightning Chat costs $3.79 per million input tokens and $19.14 per million output tokens.