Mistral Small 3 1.5B on MMLU-Pro: score, rank and what it means
Mistral Small 3 1.5B scores 56.3 on MMLU-Pro, placing it #566 of 600 models in the index. The benchmark average is 73.5 and the leader is GPT-5.2 Pro at 91.6.
Score distribution
The chart shows the top 10 models on MMLU-Pro, with Mistral Small 3 1.5B highlighted. Longer bars mean higher scores.
Top 10 leaderboard
| # | Model | Provider | Context | Input / 1M | Avg score |
|---|---|---|---|---|---|
| 1 | GPT-5.2 Pro | OpenAI | 2000000 | $21.32 | 89.6 |
| 2 | GPT-5.1 Max | OpenAI | 2000000 | $20.50 | 87.9 |
| 3 | Claude Opus 4.5 Pro | Anthropic | 200000 | $20.98 | 89.1 |
| 4 | Claude Opus 4.5 Reasoning | Anthropic | 2000000 | $20.91 | 88.2 |
| 5 | Gemini 3 Pro Reasoning | Google DeepMind | 200000 | $19.69 | 87.5 |
| 6 | GPT-5.1 Reasoning | OpenAI | 400000 | $20.27 | 88.3 |
| 7 | GPT-5.2 | OpenAI | 2000000 | $19.71 | 88.0 |
| 8 | Claude Opus 4.5 Max | Anthropic | 1000000 | $20.90 | 87.8 |
| 9 | GPT-5.2 Vision | OpenAI | 1000000 | $19.03 | 87.4 |
| 10 | Gemini 3 Pro Max | Google DeepMind | 2000000 | $20.57 | 87.9 |
What this score means
On MMLU-Pro, Mistral Small 3 1.5B sits at #566 of 600. The leader, GPT-5.2 Pro, scores 91.6, so the gap to the top is 35.3 points. The median model in this index scores 76.1, which puts Mistral Small 3 1.5B below the midpoint.
Mistral AI models average 71.4 on this benchmark. Mistral Small 3 1.5B is 15.1 points below that provider line, so it is a weaker result than the average Mistral AI model.
Among small open-weight models, the average is 59.8. Mistral Small 3 1.5B is 3.5 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 56.3 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 $0.42 per million input tokens, Mistral Small 3 1.5B is below the median input price of $4.00 across the 600 models scored on MMLU-Pro. 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 |
|---|---|---|---|---|
| Hunyuan-Large 1.5B | Tencent | 8192 | $0.54 | 50.5 |
| Llama 3 Baseten 1.5B | Baseten | 4096 | $0.42 | 48.2 |
| Llama 3 Novita 1.5B | Novita AI | 4096 | $0.41 | 49.1 |
| Command R+ 1.5B | Cohere | 32768 | $0.51 | 50.0 |
| Mistral Small 3 1.5B | Mistral AI | 32768 | $0.42 | 49.2 |
| Llama 3 Anyscale 1.5B | Anyscale | 16384 | $0.43 | 48.9 |
| Llama 3 Replicate 1.5B | Replicate | 4096 | $0.51 | 49.3 |
Other benchmarks for Mistral Small 3 1.5B
| Benchmark | Score | Rank | Percentile | Relative |
|---|---|---|---|---|
| GPQA Diamond | 44.3 | 569 | 5th | |
| SWE-bench Verified | 34.7 | 561 | 7th | |
| HumanEval | 50.9 | 568 | 5th | |
| MATH-500 | 48.7 | 569 | 5th | |
| AIME 2025 | 36.6 | 558 | 7th | |
| LiveCodeBench | 34.5 | 572 | 5th | |
| IFEval | 62.5 | 551 | 8th | |
| TruthfulQA | 56.1 | 564 | 6th | |
| HellaSwag | 68.5 | 554 | 8th | |
| MMMU | 48.0 | 565 | 6th | |
| Arena Elo | 1200.3 | 555 | 8th |
FAQ
What score does Mistral Small 3 1.5B get on MMLU-Pro?
Mistral Small 3 1.5B scores 56.3 on MMLU-Pro in this index. The benchmark average is 73.5 and the top score is 91.6.
How does Mistral Small 3 1.5B rank on MMLU-Pro?
It ranks #566 of 600 models, in the 6th percentile. The leader is GPT-5.2 Pro at 91.6.
Is Mistral Small 3 1.5B good at MMLU-Pro?
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 MMLU-Pro score calculated?
MMLU-Pro is a knowledge 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 Mistral Small 3 1.5B cost?
Mistral Small 3 1.5B costs $0.42 per million input tokens and $1.58 per million output tokens.