Mistral Large 4 ships open weights and cuts API price to $0.70

Mistral released the open weights of Mistral Large 4 on Hugging Face on October 29, 2026, three weeks after the model entered public preview on October 6. The same day, Mistral cut the API price to $0.70 input and $2.10 output per million tokens.

What changed

• The weights are on Hugging Face as mistralai/Mistral-Large-4-1T-A52B, in FP8 and NVFP4 checkpoints.
• The license is the Mistral Ecosystem Open-Weight License, a modified MIT license. Businesses that run a Model-as-a-Service offering need a separate commercial license from Mistral.
• The model card lists about 1T total parameters, 49B active per token (52B counting embeddings and output layers), a 1M-token context, and text and image input with text output.
• Reasoning effort now has three levels: low, medium and high, with high the default.
• Mistral says the released model had three more weeks of reinforcement learning than the preview. It reports 41% on Terminal-Bench 4.0, 13 points above the preview.

Mistral API pricing

Mistral's list price per million tokens for mistral-large-4:

Mistral Large 4 on RouterPlus

RouterPlus lists mistral-large-4 on 1 provider. Prices per million tokens, from the live catalog on October 31, 2026:

What to do

• To call it through RouterPlus, sign up at app.routerplus.com/login and use the model ID mistral-large-4 with the base URL https://api.routerplus.com/v1.
• To self-host, download the weights from Hugging Face and read the license first if you plan to offer the model as a hosted service.

Browse every model and price: RouterPlus models.

Sources

1. Mistral: Mistral Large 4 is now open weight
2. Mistral: Introducing Mistral Large 4
3. Hugging Face model card: Mistral-Large-4-1T-A52B
4. Hugging Face: Welcome Le Chonk, Mistral Large 4
5. INFRO: Open-weight models, October 2026 (preview list price)
6. RouterPlus model catalog