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Mistral Large 4 (Le Chonk) - Le Chonk AI
Mistral’s 1-trillion-parameter flagship model, nicknamed Le Chonk.
Product insights
Mistral Large 4 (Le Chonk) at a glance
Value proposition
A frontier-scale European model with open weights, a 1M context, and low API prices.
Problem solved
Teams want a top-tier model they can eventually host themselves instead of relying only on closed US APIs.
Audience
Developers, AI engineers, security teams, and enterprises that need data control.
Pricing and access
API: $1.36 per 1M input tokens and $4.18 per 1M output tokens; cached input $0.14 per 1M.
Market
- Frontier LLMs
- Open-weight models
Tech stack
- Mixture of experts (1.05T total, 49B active)
- 1M-token context and vision encoder
01Why it is here
What is Mistral Large 4 (Le Chonk)?
“Le Chonk” is the nickname for Mistral Large 4, Mistral AI’s largest model so far. It reads text and images, handles up to 1 million tokens of context, and scores especially well on cybersecurity benchmarks such as Cybench (93%) and on coding-agent tasks. You can call it through the Mistral API or OpenRouter today; Mistral says weights will follow for self-hosting.
02Workflow
How to use Mistral Large 4 (Le Chonk)
- 01
Get an API key
Create an account on Mistral’s developer platform, or use OpenRouter.
- 02
Call Mistral Large 4
Select Mistral Large 4 as the model and send text or images with your prompt.
- 03
Self-host later
When the open weights are published, run it on your own GPUs for full data control.
03Capabilities
Key features of Mistral Large 4 (Le Chonk)
- 1.05T-parameter mixture of experts
- 1M-token context window
- Native image understanding
- Strong cybersecurity and coding scores
- Open weights promised
04Use cases
What is Mistral Large 4 (Le Chonk) best for?
- Coding agents and large codebases
- Security research and defense
- Long reports, contracts, and research
05Questions
FAQ about Mistral Large 4 (Le Chonk)
What is Le Chonk AI?
Le Chonk is the nickname of Mistral Large 4, Mistral AI’s 1.05-trillion-parameter flagship model released in October 2026.
Is Mistral Large 4 open source?
Mistral has promised open weights for self-hosting by the end of October 2026; the license had not been announced at launch.
How much does Mistral Large 4 cost?
API pricing is $1.36 per million input tokens and $4.18 per million output tokens.
Can I chat with Le Chonk without the API?
Mistral’s own assistant, Mistral Vibe (formerly Le Chat), runs on Mistral models; check its model picker for Large 4.
Official website snapshot
mistral.ai
Mistral Large 4, nicknamed “Le Chonk”, is Mistral AI’s flagship model released on October 6, 2026. It is a 1.05-trillion-parameter mixture-of-experts model with 49B active parameters, a 1M-token context window, and native image input. It is available through the Mistral API now, with open weights promised for self-hosting.
