Mistral AI changelog: March 2026

13 releases from Mar 6 to March 26, 2026

Everything Mistral AI shipped in March 2026, collected from official Mistral AI sources. Each entry is dated and links to the page it came from.

March 2026 at a glance

March 2026 was Mistral AI's busiest month of the 12 months to then: 13 releases, about 4.1× its monthly average of 3. That was 9 releases more than February 2026. Most were Model (8), followed by API (2) and Developer Tools (2).

Releases

+9 vs February 2026

Rank of 12 months

1st

Average 3.2 a month

Most shipped

Model

8 releases

Notable Mistral AI launches in March 2026

ModelMar 26
Voxtral TTS 2603 Release
Released Voxtral TTS (voxtral-tts-2603), our state-of-the-art text-to-speech model with zero-shot voice cloning, multilingual support, and real-time streaming.
Source: Mistral Docs Changelog
ModelMar 25
Mistral Small 3.1 Release
Released Mistral Small 3.1 (mistral-small-2503).
Source: Mistral Docs Changelog
ModelMar 23
Voxtral TTS
Mistral released Voxtral TTS, a text-to-speech model with zero-shot voice cloning, multilingual support, and real-time streaming.
Source: Mistral Docs Changelog

All Mistral AI releases in March 2026

Newest first. Each entry links to the official page it came from.

March 202613 releases

Mar 26

Voxtral TTS 2603 Release

Released Voxtral TTS (voxtral-tts-2603), our state-of-the-art text-to-speech model with zero-shot voice cloning, multilingual support, and real-time streaming.

VoxtralModelSource: Mistral Docs Changelog

Mar 25

Mistral Small 3.1 Release

Released Mistral Small 3.1 (mistral-small-2503).

Mistral SmallModelSource: Mistral Docs Changelog

Mar 23

Voxtral TTS

Mistral released Voxtral TTS, a text-to-speech model with zero-shot voice cloning, multilingual support, and real-time streaming.

ModelSource: Mistral Docs Changelog

Mar 23

Mistral Small 4 Release

We released Mistral Small 4 ( mistral-small-2603 ), a hybrid model unifying instruct, reasoning, and coding in a single multimodal model with a 256k context window.

Mistral SmallModelSource: Mistral Docs Changelog

Mar 23

Leanstral Release

We released Leanstral ( labs-leanstral-2603 ), our first open-source code agent designed for Lean 4 formal proof engineering.

LeanstralModelSource: Mistral Docs Changelog

Mar 17

Introducing Forge

Introducing Forge, a system for enterprises to build AI models trained on proprietary knowledge, enhancing control and customization

ProductSource: Mistral AI

Mar 16

Mistral Small 4

Mistral released Small 4, a hybrid multimodal model that unifies instruct, reasoning, and coding with a 256k context window.

ModelSource: Mistral Docs Changelog

Mar 16

Leanstral: Open-Source foundation for trustworthy vibe-coding

Open-source code agent designed for Lean 4, optimized for proof engineering tasks with efficient sparse architecture and parallel inference capabilities.

Developer ToolsSource: Mistral AI

Mar 16

Leanstral 2603 Release

Released Leanstral (labs-leanstral-2603), our first open-source code agent designed for Lean 4 formal proof engineering.

LeanstralModelSource: Mistral Docs Changelog

Mar 16

Leanstral

Mistral released Leanstral, its first open-source code agent for Lean 4 formal proof engineering.

Developer ToolsSource: Mistral Docs Changelog

Mar 12

Mistral Moderation 2603

Mistral released Moderation 2603 and added custom guardrails support for Agents and Conversations, tightening moderation and policy controls in the API.

APISource: Mistral Docs Changelog

Mar 12

Custom Guardrails API Update

We added Custom Guardrails support for Agents and Conversations. Guardrails can now be configured directly on an Agent via the guardrails parameter. Guardrails can be passed per-request on POST /v1/conversations using the guardrails field. Guardrails can be passed per-request on…

MistralAPISource: Mistral Docs Changelog

Mar 6

Mistral OCR 2503 Release

Released Mistral OCR (mistral-ocr-2503) and document understanding.

OCRModelSource: Mistral Docs Changelog

Where March 2026 sits

Mistral AI releases per month, for March 2026 and the 11 months before it. A taller bar means more releases that month; the dated entries for each month are on its own page.