Mistral AI · Released Jun 10, 2025Magistral Small
Open Mistral reasoning model for transparent step-by-step problem solving.
- Capability
- 133.2ECI · #120 of 148
- Input
- $0.50per 1M tokens
- Output
- $1.50per 1M tokens
- Context
- 131K8K max output
What it costs
- Input
- $0.50per million tokens
- Output
- $1.50per million tokens
- Blended (3:1)
- $0.75cheaper than 50% of priced models
Typical monthly bills
| Monthly usage | Estimated cost |
|---|---|
| Side project2M input + 0.5M output tokens | $1.75 |
| Team assistant25M input + 5M output tokens | $20.00 |
| Production app250M input + 50M output tokens | $200.00 |
Median of 1 paid API provider on models.dev.
Independent benchmarks
#120 of 148 scored models
The shaded band is Epoch AI’s confidence range (128.9–134.4); the tick marks the median scored model.
Scores from Epoch AI, run independently of Mistral AI.
The details
- Lab
- Mistral AI
- Released
- Jun 10, 2025
- Context window
- 131,072 tokens
- Max output
- 8,192 tokens
- Inputs
- Text
- Output
- Text
- Reasoning
- Always on
- Tool calling
- Yes
- Structured output
- No
- Weights
- Open weights · Apache 2.0
- Availability
- 1 API providerlisted on models.dev
More from Mistral AI
About Magistral Small
How much does Magistral Small cost?
Magistral Small costs $0.50 input / $1.50 output per million tokens (median across 1 API provider). At a 3:1 input-to-output mix that is $0.75 per million tokens, cheaper than 50% of the 360 priced models we track.
What is the context window of Magistral Small?
Magistral Small accepts up to 131,072 tokens per request and can write up to 8,192 tokens in one response.
How good is Magistral Small?
Epoch AI gives Magistral Small a Capabilities Index score of 133.2 (likely range 128.9–134.4), ranking it #120 of 148 models Epoch has scored. Epoch AI benchmark results: GPQA Diamond 56.1%, OTIS Mock AIME 2024–2025 30.0%.
Is Magistral Small open source?
Yes. Mistral AI publishes the weights under the Apache 2.0 licence, so it can be downloaded and self-hosted.
What inputs does Magistral Small support?
Magistral Small accepts text and replies in text. It is a reasoning model, supports tool calling.
When was Magistral Small released?
Mistral AI released Magistral Small on Jun 10, 2025.
What are the best alternatives to Magistral Small?
The closest current models from other labs on capability, price and release date are GPT-4.1 mini (OpenAI, ECI 135.0, $0.40 / $1.60), Llama 4 Maverick 17B Instruct (Meta, ECI 132.2, $0.321 / $0.91), DeepSeek-V3 (DeepSeek, ECI 132.3, $0.32 / $1.10) and QwQ 32B (Alibaba (Qwen), ECI 137.6, $0.66 / $1.00).