Mistral AI

Timeline

1. May 28, 2026Mistral AI

   Product

   Vibe agent platform

   Le Chat relaunched as an autonomous work/code agent — Mistral's pivot to an enterprise agent OS.

2. Apr 29, 2026Mistral AI

   Open weights

   Mistral Medium 3.5

   A 128B open-weight model with 256K context and cloud agents that submit GitHub PRs autonomously.

3. Dec 2, 2025Mistral AI

   Open weights

   ★ Landmark

   Mistral Large 3

   A 675B MoE open-weight frontier model claiming parity with closed rivals, plus small models.

4. Sep 9, 2025Mistral AI

   Funding

   ★ Landmark

   Series C — €1.7B led by ASML

   Europe's largest AI round at the time, valuing Mistral at €11.7B.

5. Jul 15, 2025Mistral AI

   Open weights

   Voxtral

   Mistral's first open-source speech models, beating Whisper large-v3 on multilingual audio.

6. Jun 10, 2025Mistral AI

   Model

   Magistral

   Mistral's first reasoning family with transparent, multilingual chain-of-thought.

7. May 21, 2025Mistral AI

   Open weights

   Devstral

   First Mistral model built for software-engineering agents, leading open-source SWE-bench.

8. Feb 6, 2025Mistral AI

   Product

   Le Chat relaunch

   Overhauled assistant with apps, web search, and a Pro tier — a first direct ChatGPT challenge.