Mistral Large 4 opens for API testing; weights are still to come
Mistral launched Large 4 as a text-and-image API preview on October 6, with downloadable weights promised by the end of the month.
Mistral’s new Large 4 can be tested through its hosted API.
The company promises downloadable weights by the end of October, after further testing. That would give organisations a choice about where the model runs; the preview itself remains remote access. [1][2]
The model card lists a one-million-token context window and 1.05 trillion total parameters. The active-parameter count remains unresolved: the announcement says 49 billion, while the model card says 52 billion. [1][3]
The apparent pricing discrepancy has an explanation. Mistral’s changelog specifies a two-week, 50% launch discount; the model card shows $0.68 per million input tokens and $2.09 per million output tokens alongside higher list prices. No exact discount-end time or timezone is given. [2][3]
Sources & details 4 sources
Discuss in your voice app
Take the reporting, visual explanations and original sources into a conversation. Copy the brief, paste it into your preferred assistant, then start its voice mode.
Paste the brief into your voice app to discuss this reporting.Revised 9 October 2026. Copy edited 9 October to remove commentary about graphic design; reported claims, qualifications and source dates preserved.
Reporting sources
- Mistral · October 6 announcement
Original public-preview announcement; text/vision, future weights and ongoing tests. Performance remains vendor-reported.
- Mistral · Dated changelog
October 6 entry confirms public preview, forthcoming weights and a two-week 50% launch discount; no exact end timezone.
- Mistral · Large 4 model card
Opened after collection: 1M context, 1.05T total, 52B active and launch prices. Active count differs from announcement’s 49B; discrepancy retained.
- Le Monde · Reporting and Lample interview
October 6 original reporting independently corroborates the launch and reports preliminary performance; it is not benchmark replication.
Images & figures
An API preview supplies remote access. Downloadable weights would enable a different deployment choice, subject to the eventual licence and hardware requirements. Mistral promises them by the end of October; this diagram does not represent a completed download or a performance comparison.
Euangelion · original explanatory graphic · Source · Usage terms