Mistral Small 4: release date and what it's for
Released , according to Mistral's announcement. Fifteen cents a million on a 256K window, Apache 2.0, weights included. Hard to argue with for bulk work.
- Status
- Live
- Released
- Lab
- Mistral
- Input
- $0.15per million tokens
- Output
- $0.60per million tokens
- Context window
- 256Ktokens
- Max output
- Not published
API model ID: mistral-small-2603
What we've written about Mistral Small 4
September 16, 2026
Firefox's AI assistant now runs on Mistral, and Mozilla left the model picker in place.
Two companies that call themselves open source advocates are selling a browser deal as a brake on closed-model AI.
How Mistral Small 4 compares on price and context
inputoutput
- GPT-6 Astra$10 / $50
- Mistral Medium 3.5$1.50 / $7.50
- Muse Spark 1.3$1.25 / $4.25
- Gemini 3.8 Flash$0.75 / $3.75
- Mistral Large 3$0.50 / $1.50
- Mistral Small 4$0.15 / $0.60
- Leanstral 1.5$0 / $0
how much it reads at once
- GPT-6 Astra1.05M
- Muse Spark 1.31.05M
- Gemini 3.8 Flash1.05M
- Mistral Small 4256K
- Leanstral 1.5256K
- Mistral Medium 3.5256K
- Mistral Large 3256K
Next to the newest Mistral models and the current model from other labs. Prices are in US dollars per million tokens.
What is Mistral Small 4?
Mistral Small 4 is a model from Mistral, built in France. It's out, and you can use it today.
When did Mistral Small 4 come out?
Mistral released it on March 16, 2026. That date comes from Mistral's announcement.
More from Mistral
MistralLive
Mistral Medium 3.5
- in /1M
- $1.50
- out /1M
- $7.50
- context
- 256K
MistralLive
Ministral 3 14B
- in /1M
- $0.20
- out /1M
- $0.20
- context
- 256K
More news: Open-weight AI model news: Qwen, DeepSeek, Mistral and more
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