Mistral Medium 3.5 is a dense 128B instruction-following model from Mistral AI.
Ways to buy 3
| Way to buy | Input | Output | In / out per 1M | Cached | Vs list |
|---|---|---|---|---|---|
The lab's own API | $1.5 | $7.5 | $1.5 / $7.5List price | n/a | List price |
zdr | $1.5 | $7.5 | $1.5 / $7.5Same as list | n/a | Same as list |
eu | $1.65 | $8.25 | $1.65 / $8.25+10% vs list | n/a | +10% vs list |
USD per 1M tokens; batch $0.75 in, $3.75 out on the lab's API. Regions are separate routes.
Through a gateway
Your own numbers100M input and 20M output tokens a month: $300.00 direct.
Kong AI Gateway$300.00+0%
LiteLLM$300.00+0%
Vercel AI Gateway$300.00+0%
Requesty$315.00+5%
Eden AI$316.50+5.5%
OpenRouter$316.50+5.5%
Cloudflare AI GatewayNot offeredNot offered
HeliconeNot offeredNot offered
Neon AI GatewayNot offeredNot offered
A dash: not on that gateway's own model list. No published token fee: Martian Gateway, Portkey, TrueFoundry AI Gateway.
Related models
| In / out per 1M | Cheapest route | |||||||
|---|---|---|---|---|---|---|---|---|
Mistral AI · 1M | $0.7 | $2.1 | $0.7 / $2.1 | $1.05 | 1M | on Mistral AI (zdr) | · | Mistral Large 4 is a frontier multimodal (text and image input) model from Mistral AI built for reasoning, coding, and agentic workloads. |
Mistral AI · 262K | $0.15 | $0.6 | $0.15 / $0.6 | $0.262 | 262K | on Mistral AI (zdr) | · | 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. |
Mistral AI · 262K | $0.4 | $2 | $0.4 / $2 | $0.8 | 262K | on Mistral AI (eu) | · | Devstral 2 is a state-of-the-art open-source model by Mistral AI specializing in agentic coding. |
Mistral AI · 262K | $0.2 | $0.2 | $0.2 / $0.2 | $0.2 | 262K | on Mistral AI (zdr) | · | The largest model in the Ministral 3 family, Ministral 3 14B offers frontier capabilities and performance comparable to its larger Mistral Small 3.2 24B counterpart. |
OpenAI · 1.05MCheapest: $2 on OpenAI (flex) | $2 | $10 | $2 / $10 | $4 | 1.05M | $2 on OpenAI (flex) | · | GPT-6.1 Sol is an upgrade to GPT-6 Sol from OpenAI, positioned below the flagship GPT-6 Astra in the GPT-6 series. |
Google · 1MCheapest: $2 on Google Gemini API (flex) | $2 | $10 | $2 / $10 | $4 | 1M | $2 on Google Gemini API (flex) | · | Gemini 4 Argon is Google's flagship reasoning model, built for complex software engineering, deep mathematical and scientific problem solving, and autonomous multi-step agents. |
Anthropic · 1M | $2 | $10 | $2 / $10 | $4 | 1M | Lab list price | · | Claude Sonnet 5.5 is Anthropic's Sonnet-class model for well-scoped everyday work, succeeding Claude Sonnet 5 as a direct upgrade. |
OpenAI · 1.05MCheapest: $1 on OpenAI (flex) | $1 | $5 | $1 / $5 | $2 | 1.05M | $1 on OpenAI (flex) | · | GPT-6.1 Terra is the mid-tier model in OpenAI's GPT-6.1 series, priced below GPT-6.1 Sol. |
About Mistral Medium 3.5
Takes text, image, files in and returns text. First listed May 13, 2026. Up to 210K output tokens. Blended price $3 per 1M tokens at 3 input to 1 output. Model id mistral-medium-3-5.
Price history
List price since May 13, 2026, from Internet Archive snapshots of the OpenRouter catalog, then daily reads.
Questions
How much does Mistral Medium 3.5 cost?
$1.5 per million input tokens and $7.5 per million output tokens, or $0.75 and $3.75 through the Batch API.
What is the context window of Mistral Medium 3.5?
262K tokens, with up to 210K tokens of output.
Where is Mistral Medium 3.5 cheapest?
Of 3 routes tracked, Mistral AI is cheapest at $1.5 input and $7.5 output per million tokens.