Model Tracker

Mistral Small 3.1

Mistral Small 3.1 is an AI model made by Mistral AI. Mistral AI released it on 17 March 2025. It is retired. Mistral AI retired it on 30 November 2025.

Mistral AI

Mistral Small 3.1 is an AI model made by Mistral AI. Mistral AI released it on 17 March 2025. It is retired. Mistral AI retired it on 30 November 2025. It takes text, image and returns text. Its context window is 128,000 tokens. Its weights are open. Its licence is Apache 2.0. Its knowledge cutoff is 1 October 2023.

Released: 17 March 2025 — mistral.ai, read 16 October 2026
Status: Retired — docs.mistral.ai, read 16 October 2026
Retired: 30 November 2025 — docs.mistral.ai, read 16 October 2026
Takes: Text, Image — huggingface.co, read 16 October 2026
Returns: Text — huggingface.co, read 16 October 2026
Open weights: Yes — mistral.ai, read 16 October 2026
Licence: Apache 2.0 — mistral.ai, read 16 October 2026
Context window: 128,000 tokens — docs.mistral.ai, read 16 October 2026
Longest answer: Not confirmed: The maker's model page, announcement, and model card do not state the standard maximum output-token limit.
Knowledge cutoff: 1 October 2023 — huggingface.co, read 16 October 2026
API price, input: Not confirmed: The maker's current pricing page does not list Mistral Small 3.1 or an input-token price for it.
API price, output: Not confirmed: The maker's current pricing page does not list Mistral Small 3.1 or an output-token price for it.
Where: Not confirmed: two readings disagree: weights and api, weights, cloud
Parameters: 24,000,000,000 — huggingface.co, read 16 October 2026
Model card: https://huggingface.co/mistralai/Mistral-Small-3.1-24B-Instruct-2503 — huggingface.co, read 16 October 2026

Benchmarks

Measured by others, not by the maker: each score with the name the measurer gives the model and the setting it ran, its day and its licence.

Epoch AI

Epoch Capabilities Index, Mistral Small 3.1: 127.5 (122.1–129.5), as of 19 October 2026
GPQA Diamond, mistral-small-2503: 47.5% (± 2.8), run 18 March 2025
GPQA Diamond, mistral-small-3.1-2503: 41.9% (± 2.3), run 30 August 2026
OTIS Mock AIME 2024–2025, mistral-small-2503: 5.8% (± 2.3), run 18 March 2025
OTIS Mock AIME 2024–2025, mistral-small-3.1-2503: 3.9% (± 1.5), run 30 August 2026

Epoch AI, ‘Capabilities & benchmarking’, epoch.ai/benchmarks, CC BY 4.0: Epoch AI’s own runs and its Capabilities Index. Data · CC BY 4.0

Questions

When was Mistral Small 3.1 released?

Mistral AI released Mistral Small 3.1 on 17 March 2025.

Is Mistral Small 3.1 still available?

No: Mistral AI retired Mistral Small 3.1 on 30 November 2025.

What is the context window of Mistral Small 3.1?

The context window of Mistral Small 3.1 is 128,000 tokens, as Mistral AI prints it.

Are the weights of Mistral Small 3.1 open?

Yes: Mistral AI publishes the weights of Mistral Small 3.1 for download.

What is the licence of Mistral Small 3.1?

The licence of Mistral Small 3.1 is Apache 2.0, as Mistral AI names it.

What does Mistral Small 3.1 take and return?

Mistral Small 3.1 takes text, image and returns text.

What is the knowledge cutoff of Mistral Small 3.1?

The knowledge cutoff of Mistral Small 3.1 is 1 October 2023.

How many parameters does Mistral Small 3.1 have?

Mistral Small 3.1 has 24,000,000,000 parameters, as Mistral AI publishes it.

Sources

Models Overview | Mistral Docs (read 16 October 2026)
Mistral Small 3.1 - Mistral AI | Mistral Docs (read 16 October 2026)
Mistral Small 3.1 | Mistral AI (read 16 October 2026)
mistralai/Mistral-Small-3.1-24B-Instruct-2503 (read 16 October 2026)
API pricing | Mistral Docs (read 16 October 2026)

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