Mistral Small 3.1 24B
Summary
Mistral Small 3.1 24B is an open-weight language model from Mistral AI, released on 17 Mar 2025. It accepts text and images and generates text, with a 128K-token context window and up to 102K output tokens per response. As of 17 Oct 2026, the lowest listed API price is $0.35 per million input tokens and $0.56 per million output tokens (OpenRouter), across 1 provider we track.
Efficient Mistral model for fast chat, extraction, and production assistants
Last verified 17 Oct 2026. Every figure on this page links to its source.
Specifications
| Developer | Mistral AI |
|---|---|
| Release date | 17 Mar 2025 [models.dev] |
| Status | Generally available [models.dev] |
| Weights | Open weights [models.dev] |
| Context window | 128K (128,000 tokens) [models.dev] |
| Max output | 102K tokens [models.dev] |
| Knowledge cutoff | 31 Oct 2023 [models.dev] |
| Input | Text and images [models.dev] |
| Output | Text [models.dev] |
| Reasoning mode | No [models.dev] |
| Tool calling | Yes [models.dev] |
| Structured output | Yes [models.dev] |
| Hugging Face | mistralai/Mistral-Small-3.1-24B-Instruct-2503 |
Mistral Small 3.1 24B API pricing by provider
USD per million tokens. Sorted by input price.
| Provider | Input | Output | Cached input | Context | Source |
|---|---|---|---|---|---|
| OpenRouter mistralai/mistral-small-3.1-24b-instruct | $0.35 | $0.56 | – | 128K | OpenRouter, 17 Oct 2026 |
Frequently asked questions
What is the context window of Mistral Small 3.1 24B?
Mistral Small 3.1 24B has a context window of 128,000 tokens (128K) and can generate up to 102,400 tokens in a single response, according to models.dev.
How much does the Mistral Small 3.1 24B API cost?
Mistral Small 3.1 24B is listed from $0.35 per million input tokens and $0.56 per million output tokens (OpenRouter). Prices last verified 17 Oct 2026.
Is Mistral Small 3.1 24B open source?
Mistral Small 3.1 24B is an open-weight model: its weights are published on Hugging Face as mistralai/Mistral-Small-3.1-24B-Instruct-2503. Check the license terms before commercial use.
When was Mistral Small 3.1 24B released?
Mistral AI released Mistral Small 3.1 24B on 17 Mar 2025, according to models.dev.
Change history
- Now listed on OpenRouter
- Added to the directory