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AI release notes

Mistral AI's official changelog: new Mistral models and changes for developers.

Compiled by the Toolstash team · Updated

  1. Mistral APIAnnouncement

    We released Voice Agents, a managed real-time bidirectional voice pipeline exposed through the Voice Agents…

    We released Voice Agents, a managed real-time bidirectional voice pipeline (microphone capture, STT, LLM, TTS, playback) exposed through the Voice Agents SDK, with telephony, browser, and custom-audio interfaces.

  2. Mistral API

    OCR 4.0 is deprecated and retires on September 30, 2026

    Use OCR 4.1 (mistral-ocr-4-1 or mistral-ocr-latest) instead, at the same price. Leanstral 1.5 (labs-leanstral-1-5), an experimental Labs model, is deprecated and retires on September 30, 2026. Z.ai GLM 5.2 (zai-glm-5-2) is deprecated and retires on October 31, 2026.

  3. Mistral API

    The OCR API confidence_scores_granularity parameter now supports "block" granularity

    "page" returns page-level scores only, "block" returns page-level and block-level scores, and "word" returns page-level and word-level scores.

  4. Mistral API

    Introducing include_blocks in our OCR API

    When set to true, each page returns a blocks array with paragraph-level bounding boxes and a structural label (text, title, list, table, image, equation, caption, code, references, aside_text, header, footer, signature) in reading order. Learn more in our OCR documentation. The pages parameter in our OCR API now also accepts a string of comma-separated digits and ranges (e.g.

  5. Mistral API

    We launched Vibe, our unified agent at chat.mistral.ai, available in three modes:

    Work for productivity on web and mobile, with Skills, Workflows, Connectors, Libraries, and scheduled tasks. Code for developers, covering the Vibe CLI, the VS Code extension, and Vibe Code Web for remote coding sessions in a managed cloud sandbox. Chat preserves the legacy Le Chat experience for existing workflows. Documentation restructured: previous /le-chat/* and /mistral-vibe/* paths now redirect to the new /vibe/* tree.

  6. Mistral API

    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 POST /v1/chat/completions using the guardrails field.

  7. Mistral API

    We released Vibe 2.0

    Document Annotations update and improvements, 8 page limit removed.

  8. Mistral API

    We released inline batching allowing the creation of batch jobs without file uploading

    We released inline batching allowing the creation of batch jobs without file uploading.

  9. Mistral API

    Introducing table_format in our OCR API, allowing you to choose between markdown and html for table formatting

    Introducing extract_footer, extract_header in our OCR API, as well as hyperlinks output.

  10. Mistral API

    We released Mistral Vibe

    We released Mistral Vibe.

  11. Mistral API

    Added a new parameter p to the chunks streamed back by the Completion API

    Implemented for security to prevent token-length side-channel attacks, as reported by Microsoft researchers. Note that this change may break applications relying on strict parsing of the chunks.

  12. Mistral API

    We released a Document Library API to manage libraries

    SDK support for Audio and Transcription available.

  13. Mistral API

    Mistral Small 3.2 API available

    Mistral Small 3.2 API available (mistral-small-2506).

  14. Mistral API

    We released the new Agents API

    We released the new Agents API.

  15. Mistral API

    We released the Classifier Factory

    We released the Classifier Factory.

  16. Mistral API

    We released custom structured outputs for all models

    We released custom structured outputs for all models.

  17. Mistral API

    Le Chat:

    Web search with citations Canvas for ideation, in-line editing, and export State of the art document and image understanding, powered by the new multimodal Pixtral Large Image generation, powered by Black Forest Labs Flux Pro Fully integrated offering, from models to outputs Faster responses powered by speculative editing

  18. Mistral API

    We introduced three new parameters:

    presence_penalty: penalizes the repetition of words or phrases frequency_penalty: penalizes the repetition of words based on their frequency in the generated text n: number of completions to return for each request, input tokens are only billed once. We downscaled the temperature parameter of pixtral-12b, ministral-3b-2410, and ministral-8b-2410 by a multiplier of 0.43 to improve consistency, quality, and unify model behavior.

  19. Mistral API

    We reduced price on our flagship model, Mistral Large 2

    We introduced a free API tier on La Plateforme.

  20. Mistral API

    In le Chat, we added a mitigation against an obfuscated prompt method that could lead to data exfiltration,…

    The attack required users to willingfully copy and paste adversarial prompts and provide personal data to the model. No user was impacted and no data was exfiltrated.

  21. Mistral API

    We released version 1.0 of our Python and JS SDKs with major upgrades and syntax changes

    Check out our migration guide for details. We released Agents API.

  22. Mistral API

    We added fine-tuning support for Codestral, Mistral Nemo and Mistral Large

    Now the model choices for fine-tuning are open-mistral-7b (v0.3), mistral-small-latest (mistral-small-2402), codestral-latest (codestral-2405), open-mistral-nemo and, mistral-large-latest (mistral-large-2407)

  23. Mistral API

    We released fine-tuning API

    Check out the capability docs and guides.

  24. Mistral API

    Function calling: tool_call_id is now mandatory in chat messages with the tool role

    Function calling: tool_call_id is now mandatory in chat messages with the tool role.

  25. Mistral APIAnnouncement

    For function calling, tool_call_id must not be null for open-mixtral-8x22b

    We released three versions of tokenizers for commercial and open-weight models: check the related guide and repo for more details.

  26. Mistral API

    JSON mode now available for all models on La Plateforme

    JSON mode now available for all models on La Plateforme.

  27. Mistral API

    API endpoints: We renamed 3 API endpoints and added 2 model endpoints

    open-mistral-7b (aka mistral-tiny-2312): renamed from mistral-tiny. open-mixtral-8x7B (aka mistral-small-2312): renamed from mistral-small. New API capabilities: Function calling: available for Mistral Small and Mistral Large. JSON mode: available for Mistral Small and Mistral Large La Plateforme: We added multiple currency support to the payment system, including the option to pay in US dollars. We introduced enterprise platform features including admin management, which allows users to manage individuals from your organization. Le Chat: We introduced the brand new chat interface Le Chat to easily interact with Mistral models. You can currently interact with three models: Mistral Large, Mistral Next, and Mistral Small.

  28. Mistral API

    We added token usage information in streaming requests

    You can find it in the last chunk returned.

  29. Mistral API

    We have enhanced the API's strictness

    Previously the API would silently ignores unsupported parameters in the requests, but it now strictly enforces the validity of all parameters. If you have unsupported parameters in your request, you will see the error message "Extra inputs are not permitted". A previous version of the guardrailing documentation incorrectly referred to the API parameter as safe_mode instead of safe_prompt.