Ways to buy 4
| Way to buy | Input | Output | In / out per 1M | Cached | Vs list |
|---|---|---|---|---|---|
 Mistral AI APIThe lab's own API · cached $0.015 | $0.15 | $0.6 | $0.15 / $0.6List price | $0.015 | List price |
| Mistral AI zdr · cached $0.015 | $0.15 | $0.6 | $0.15 / $0.6Same as list | $0.015 | Same as list |
| Mistral AI eu · cached $0.017 | $0.165 | $0.66 | $0.165 / $0.66+10% vs list | $0.017 | +10% vs list |
| Mistral AI us · cached $0.017 | $0.165 | $0.66 | $0.165 / $0.66+10% vs list | $0.017 | +10% vs list |
USD per 1M tokens; batch $0.075 in, $0.3 out on the lab's API. Regions are separate routes.
Through a gateway
Your own numbers100M input and 20M output tokens a month: $27.00 direct.
Helicone$27.00+0%
Kong AI Gateway$27.00+0%
LiteLLM$27.00+0%
Vercel AI Gateway$27.00+0%
Cloudflare AI Gateway$28.35+5%
Requesty$28.35+5%
Eden AI$28.48+5.5%
OpenRouter$28.48+5.5%
No published token fee: Martian Gateway, Portkey, TrueFoundry AI Gateway.
Related models
| In / out per 1M | Cheapest route | ||||||
|---|---|---|---|---|---|---|---|
| Mistral Medium 3.5 Mistral AI · 262K | $1.5 | $7.5 | $1.5 / $7.5 | $3 | 262K | Lab list price | · |
| Devstral 2 2512 Mistral AI · 262K | $0.4 | $2 | $0.4 / $2 | $0.8 | 262K | on Mistral AI (eu) | · |
| Ministral 3 14B 2512 Mistral AI · 262K | $0.2 | $0.2 | $0.2 / $0.2 | $0.2 | 262K | Lab list price | · |
| Ministral 3 3B 2512 Mistral AI · 131K | $0.1 | $0.1 | $0.1 / $0.1 | $0.1 | 131K | Lab list price | · |
 DeepSeek V4.1 FlashDeepSeek · 1MCheapest: $0.131 on Morph | $0.15 | $0.6 | $0.15 / $0.6 | $0.262 | 1M | $0.131 on Morph | · |
 Gemini 3.1 Flash LiteGoogle · 1MCheapest: $0.281 on Google Vertex AI (global-flex) | $0.25 | $1.5 | $0.25 / $1.5 | $0.563 | 1M | $0.281 on Google Vertex AI (global-flex) | · |
| Gemini 3.1 Flash Lite Preview Google · 1MCheapest: $0.281 on Google Gemini API (flex) | $0.25 | $1.5 | $0.25 / $1.5 | $0.563 | 1M | $0.281 on Google Gemini API (flex) | · |
 GPT-6 LunaOpenAI · 1.05MCheapest: $0.1 on OpenAI (flex) | $0.1 | $0.5 | $0.1 / $0.5 | $0.2 | 1.05M | $0.1 on OpenAI (flex) | · |
About Mistral Small 4
Mistral Small 4 is the next major release in the Mistral Small family, unifying the capabilities of several flagship Mistral models into a single system.
Takes text, image in and returns text. First listed Sep 23, 2026. Up to 210K output tokens. Blended price $0.262 per 1M tokens at 3 input to 1 output. Model id mistral-small-2603.
Price history
List price since Sep 23, 2026, from daily reads of the OpenRouter catalog.
Questions
How much does Mistral Small 4 cost?
$0.15 per million input tokens and $0.6 per million output tokens, with cached input at $0.015, or $0.075 and $0.3 through the Batch API.
What is the context window of Mistral Small 4?
262K tokens, with up to 210K tokens of output.
Where is Mistral Small 4 cheapest?
Of 4 routes tracked, Mistral AI is cheapest at $0.15 input and $0.6 output per million tokens.
Sources: OpenRouter's public model catalog and each provider's own pricing page, read every morning at 05:00 UTC; gateway fees re-read every Monday. List prices: your contract may differ. Logos via logo.dev; trademarks belong to their owners.