Mistral Large 4
Large 4 is here as a public preview on Mistral's own API (Oct 6): a natively multimodal mixture-of-experts with about 1 trillion parameters, 49B active, a 1M-token context, at $0.68 / $2.09 per million tokens for now (half the $1.36 / $4.18 list price). It scores 38 on the Artificial Analysis Intelligence Index. Mistral promises the open weights by the end of October. ArtificialWatch fired the launch alert at 13:37 UTC, when OpenRouter listed it.
Leaks & news, newest first.
Large 4 ships as a public preview, weights by the end of October
Mistral opened a public preview API for Mistral Large 4 (id mistral-large-4): about 1.05T total parameters, 49B active, a 1.6B vision encoder and a 1M-token context, at $0.68 input, $0.07 cached and $2.09 output per million tokens for now (Mistral’s docs strike through a $1.36 / $0.14 / $4.18 list price). By Mistral’s own figures it scores 61.7% on DeepSWE v1.1 and 28.3% on Terminal-Bench 4. Trained from scratch on 3,800 Grace Blackwell GPUs in Mistral’s European datacenters. Weights are promised by the end of the month. via Mistral
Summer ends without the promised model
Mistral’s docs for the season list OCR 4.1 reaching general availability and Z.ai’s GLM-5.3 added as a hosted third-party model (Sep 15), but no new general-purpose Mistral model — neither the summer release Mensch described nor a Large 4. Large 3 is still the top of the line. via Mistral docs
Still nothing — and the gap is the story
No Large 4 teaser, preview or roadmap entry. Seven months since a flagship release is uncharted for Mistral, and prediction markets read the silence as a second-half story.
Mensch: an open-weight model “this summer,” early access in July
Mistral CEO Arthur Mensch told TechCrunch: “We have a very exciting model to come this summer — it will be open-weight, and we’re opening early access to it in July.” He did not name it or say which line it belongs to. via TechCrunch
Small 4 ships — three products folded into one
Mistral merged Magistral (reasoning), Pixtral (vision) and Devstral (agentic coding) into Small 4 — a consolidation play that reads like the platform being tidied ahead of a bigger swing. via Mistral changelog
The March spree: six products in one month
Small 4, Voxtral TTS, Leanstral, Forge, the Spaces CLI and an NVIDIA partnership — everything except a flagship. The Large line stayed untouched. via Serenities AI
Large 3 ships — the current top of the line
Mistral's reigning flagship arrived December 2, 2025. Every day since is a day closer to its successor. via Mistral
The official word.
“Today, we’re launching a public preview of Mistral Large 4.” Mistral says the weights follow by the end of this month, and that until then cybersecurity partners and state authorities are red-teaming a version with reduced moderation. Our launch alert fired at 13:37 UTC, when OpenRouter listed it.
Mistral, Oct 6, 2026 · via the ArtificialWatch wire desk
$0.68 / $2.09 per million tokens, on Mistral's own API.
How much does Mistral Large 4 cost?
Mistral's own API lists Mistral Large 4 (mistral-large-4) at $0.68 per million input tokens and $2.09 per million output tokens, and $0.07 per million cached input tokens. Prices as published in the models.dev catalog, as of 2026-10-07.
What is Mistral Large 4's context window?
524K tokens, with up to 262K output tokens per response, as Mistral lists Mistral Large 4 (mistral-large-4).
Listed by 11 providers, exact ids below.
11 providers list Mistral Large 4 in the models.dev catalog (as of 2026-10-07), under the model ids shown below.
mistral-large-4mistralai/mistral-large-4-0mistral/mistral-large-4mistral-large-4-0mistral-large-4mistralai/mistral-large-4-0mistral/mistral-large-4mistralai/mistral-large-4mistral-large-4mistral-large-4mistral-large-4 · mistral-large-4@euListings cover the model family, so a provider may list a sibling tier under the same name. Check the id before you build on it.
Hear it the second Large 4 answers.
We sweep the public catalogs (OpenRouter, models.dev) and Mistral's own news page every 60 seconds. The moment Large 4 returns a real answer, your channels fire — email + Chrome push free, SMS and a phone call on paid tiers.