# Mistral AI: what I've logged

> Mistral AI comes up in 11 posts of my AI log, from September 2025 to October 2026, and each item below links to the primary source. The releases I logged include Mistral Large 4, Voxtral Mini 4B Realtime Arabic and Leanstral 1.5: Proof Abundance for All, filed under frontier, open weights and image, video, world.

## Items

1. **Mistral Large 4** (Mistral AI, 5 Oct 2026): A 1.05-trillion-parameter mixture-of-experts model with 49B active parameters, a vision encoder and a 1M-token window, in public preview. [Primary source](https://docs.mistral.ai/models/mistral-large-4-0) · [Post](https://heyaliasif.com/ai/2026-10-05-week-in-ai#item-1)
2. **Voxtral Mini 4B Realtime Arabic** (Mistral AI, 5 Oct 2026): An open streaming speech-to-text model for Modern Standard Arabic and Gulf, Levantine, Nile Valley and Maghrebi dialects, built to handle code-switching. [Primary source](https://huggingface.co/mistralai/Voxtral-Mini-4B-Realtime-Arabic) · [Post](https://heyaliasif.com/ai/2026-10-05-week-in-ai#item-8)
3. **Leanstral 1.5: Proof Abundance for All** (Mistral AI, 29 Jun 2026): An open 119B model (6B active) under Apache 2.0 for Lean 4 proofs, reporting 587 of 672 PutnamBench problems solved. [Primary source](https://mistral.ai/news/leanstral-1-5/) · [Post](https://heyaliasif.com/ai/2026-06-29-week-in-ai#item-5)
4. **Mistral OCR 4** (Mistral AI, 22 Jun 2026): A document parser returning text, bounding boxes and confidence scores across 170 languages, at $4 per 1,000 pages. [Primary source](https://mistral.ai/news/ocr-4/) · [Post](https://heyaliasif.com/ai/2026-06-22-week-in-ai#item-3)
5. **Introducing physics AI at Mistral** (Mistral AI, 25 May 2026): Mistral brings in Emmi AI to build models that predict full physical fields in seconds on one GPU, with ASML, Airbus, Safran and Siemens Energy named as partners. [Primary source](https://mistral.ai/news/introducing-physics-ai-at-mistral/) · [Post](https://heyaliasif.com/ai/2026-05-25-week-in-ai#item-3)
6. **Remote agents in Vibe, powered by Mistral Medium 3.5** (Mistral AI, 18 May 2026): Mistral's coding agents move to the cloud and run tasks in parallel, with a Work mode preview in Le Chat. [Primary source](https://mistral.ai/news/vibe-remote-agents-mistral-medium-3-5/) · [Post](https://heyaliasif.com/ai/2026-05-18-week-in-ai#item-8)
7. **Mistral Medium 3.5** (Mistral AI, 27 Apr 2026): A 128B dense open-weights model with a 256K context that folds instruction following, reasoning and coding into one set of weights. [Primary source](https://docs.mistral.ai/models/model-cards/mistral-medium-3-5-26-04) · [Post](https://heyaliasif.com/ai/2026-04-27-week-in-ai#item-2)
8. **Mistral Workflows** (Mistral AI, 27 Apr 2026): A public-preview orchestration layer built on Temporal, with durable execution, step tracking and a human approval pause. [Primary source](https://mistral.ai/news/workflows/) · [Post](https://heyaliasif.com/ai/2026-04-27-week-in-ai#item-5)
9. **Voxtral TTS** (Mistral AI, 23 Mar 2026): Mistral's first text-to-speech model, with open weights and low latency. [Primary source](https://mistral.ai/news/voxtral-tts) · [Post](https://heyaliasif.com/ai/2026-03-23-week-in-ai#item-2)
10. **Mistral Small 4** (Mistral AI, 16 Mar 2026): One Apache-licensed model that merges Mistral's reasoning, multimodal and coding lines. [Primary source](https://mistral.ai/news/mistral-small-4/) · [Post](https://heyaliasif.com/ai/2026-03-16-week-in-ai#item-3)
11. **Mistral Forge** (Mistral AI, 16 Mar 2026): A service for companies to build custom models on open foundations using their own code, data and policies. [Primary source](https://mistral.ai/news/forge) · [Post](https://heyaliasif.com/ai/2026-03-16-week-in-ai#item-5)
12. **Devstral 2 and Mistral Vibe CLI** (Mistral AI, 8 Dec 2025): A 123B open-weight coding model, a 24B small one, and a terminal agent to drive them. [Primary source](https://mistral.ai/news/devstral-2-vibe-cli) · [Post](https://heyaliasif.com/ai/2025-12-08-week-in-ai#item-3)
13. **Introducing Mistral 3** (Mistral AI, 1 Dec 2025): Mistral Large 3, a large open mixture-of-experts model, plus small Ministral 3 models, all under Apache 2.0. [Primary source](https://mistral.ai/news/mistral-3) · [Post](https://heyaliasif.com/ai/2025-12-01-week-in-ai#item-2)
14. **Mistral Large 3** (Mistral AI, 1 Dec 2025): The 675B-parameter instruct weights, with about 41B active per token. [Primary source](https://huggingface.co/mistralai/Mistral-Large-3-675B-Instruct-2512) · [Post](https://heyaliasif.com/ai/2025-12-01-week-in-ai#item-3)
15. **Magistral Small 1.2** (Mistral AI, 15 Sept 2025): The open reasoning model gains vision input and better tone in a September refresh. [Primary source](https://huggingface.co/mistralai/Magistral-Small-2509) · [Post](https://heyaliasif.com/ai/2025-09-15-week-in-ai#item-3)

## Posts

- 2026-10-05 [Mistral Large 4, Claude Haiku 5.5 and a wave of decision models](https://heyaliasif.com/ai/2026-10-05-week-in-ai)
- 2026-06-29 [Claude Sonnet 5 at $2 and $10, Fable 5 returns, Nano Banana 2 Lite](https://heyaliasif.com/ai/2026-06-29-week-in-ai)
- 2026-06-22 [Claude Tag in Slack, Sakana Fugu, Mistral OCR 4, Codex Remote](https://heyaliasif.com/ai/2026-06-22-week-in-ai)
- 2026-05-25 [Claude Opus 4.8, NVIDIA's Cosmos 3 keynote, Codex on Windows](https://heyaliasif.com/ai/2026-05-25-week-in-ai)
- 2026-05-18 [Gemini 3.5 Flash at I/O, Qwen3.7-Max, Cursor Composer 2.5](https://heyaliasif.com/ai/2026-05-18-week-in-ai)
- 2026-04-27 [Grok 4.3, Mistral Medium 3.5 weights, and the Qwen3.6 family](https://heyaliasif.com/ai/2026-04-27-week-in-ai)
- 2026-03-23 [Google's TurboQuant, open voice from Mistral and Cohere, Flash Live](https://heyaliasif.com/ai/2026-03-23-week-in-ai)
- 2026-03-16 [GTC week: NemoClaw, GPT-5.4 mini and nano, and Mistral Small 4](https://heyaliasif.com/ai/2026-03-16-week-in-ai)
- 2025-12-08 [GPT-5.2 lands, MCP moves to a foundation, Devstral 2 and GLM-4.6V](https://heyaliasif.com/ai/2025-12-08-week-in-ai)
- 2025-12-01 [DeepSeek V3.2, Mistral 3, and Anthropic buys Bun](https://heyaliasif.com/ai/2025-12-01-week-in-ai)
- 2025-09-15 [GPT-5-Codex, Grok 4 Fast, and Anthropic explains its bad month](https://heyaliasif.com/ai/2025-09-15-week-in-ai)

Canonical: https://heyaliasif.com/ai/topics/mistral-ai