Claude Sonnet 4.5 Mini on MMMU: score, rank and what it means
Claude Sonnet 4.5 Mini scores 71.8 on MMMU, placing it #248 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 Claude Sonnet 4.5 Mini 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, Claude Sonnet 4.5 Mini sits at #248 of 600. The leader, GPT-5.2 Max, scores 86.9, so the gap to the top is 15.1 points. The median model in this index scores 70.0, which puts Claude Sonnet 4.5 Mini above the midpoint.
Anthropic models average 77.3 on this benchmark. Claude Sonnet 4.5 Mini is 5.5 points below that provider line, so it is a weaker result than the average Anthropic model.
Among multimodal models, the average is 74.3. Claude Sonnet 4.5 Mini is 2.5 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 71.8 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 $11.43 per million input tokens, Claude Sonnet 4.5 Mini is above 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 |
|---|---|---|---|---|
| Llama 3 Baseten Instruct | Baseten | 200000 | $3.91 | 76.2 |
| Llama 3.3 Instruct | Meta AI | 128000 | $4.33 | 76.6 |
| Magistral Chat | Mistral AI | 128000 | $4.33 | 76.8 |
| Nova Lite Reasoning | Amazon | 32768 | $9.92 | 74.3 |
| Claude Sonnet 4.5 Mini | Anthropic | 32768 | $11.43 | 76.5 |
| Command R+ Instruct | Cohere | 200000 | $4.16 | 76.2 |
| Gemini 3 Pro Nano | Google DeepMind | 8192 | $9.11 | 73.2 |
Other benchmarks for Claude Sonnet 4.5 Mini
| Benchmark | Score | Rank | Percentile | Relative |
|---|---|---|---|---|
| MMLU-Pro | 77.3 | 267 | 56th | |
| GPQA Diamond | 69.5 | 278 | 54th | |
| SWE-bench Verified | 68.1 | 144 | 76th | |
| HumanEval | 80.9 | 215 | 64th | |
| MATH-500 | 78.6 | 246 | 59th | |
| AIME 2025 | 69.1 | 277 | 54th | |
| LiveCodeBench | 72.8 | 132 | 78th | |
| IFEval | 85.8 | 162 | 73th | |
| TruthfulQA | 81.1 | 154 | 74th | |
| HellaSwag | 86.4 | 197 | 67th | |
| Arena Elo | 1403.3 | 199 | 67th |
FAQ
What score does Claude Sonnet 4.5 Mini get on MMMU?
Claude Sonnet 4.5 Mini scores 71.8 on MMMU in this index. The benchmark average is 67.1 and the top score is 86.9.
How does Claude Sonnet 4.5 Mini rank on MMMU?
It ranks #248 of 600 models, in the 59th percentile. The leader is GPT-5.2 Max at 86.9.
Is Claude Sonnet 4.5 Mini 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 Claude Sonnet 4.5 Mini cost?
Claude Sonnet 4.5 Mini costs $11.43 per million input tokens and $50.28 per million output tokens.