Mistral AI · Released Apr 29, 2026Mistral Medium 3.5
Balanced Mistral model for enterprise assistants, multilingual work, and tools.
- Capability
- 141.4ECI · #95 of 148
- Input
- $1.50per 1M tokens
- Output
- $7.50per 1M tokens
- Context
- 262K262K max output
What it costs
- Input
- $1.50per million tokens
- Output
- $7.50per million tokens
- Cached input
- $0.15per million tokens
- Blended (3:1)
- $3.00pricier than 74% of priced models
Typical monthly bills
| Monthly usage | Estimated cost |
|---|---|
| Side project2M input + 0.5M output tokens | $6.75 |
| Team assistant25M input + 5M output tokens | $75.00 |
| Production app250M input + 50M output tokens | $750.00 |
Official Mistral API price, as listed on models.dev.
Independent benchmarks
#95 of 148 scored models
The shaded band is Epoch AI’s confidence range (138.4–143.7); the tick marks the median scored model.
Scores from Epoch AI, run independently of Mistral AI.
The details
- Lab
- Mistral AI
- Released
- Apr 29, 2026
- Context window
- 262,144 tokens
- Max output
- 262,144 tokens
- Inputs
- Text, Images
- Output
- Text
- Reasoning
- Adjustable effort high
- Tool calling
- Yes
- Structured output
- Yes
- Weights
- Open weights
- API model ID
mistral-medium-2604on Mistral- Availability
- 12 API providerslisted on models.dev
What Mistral AI claims
Published by the lab at launch. Settings vary, so compare these only with care.
More from Mistral AI
About Mistral Medium 3.5
How much does Mistral Medium 3.5 cost?
Mistral Medium 3.5 costs $1.50 input / $7.50 output per million tokens (official Mistral API price). Cached input is $0.15 per million tokens. At a 3:1 input-to-output mix that is $3.00 per million tokens, more expensive than 74% of the 360 priced models we track.
What is the context window of Mistral Medium 3.5?
Mistral Medium 3.5 accepts up to 262,144 tokens per request and can write up to 262,144 tokens in one response.
How good is Mistral Medium 3.5?
Epoch AI gives Mistral Medium 3.5 a Capabilities Index score of 141.4 (likely range 138.4–143.7), ranking it #95 of 148 models Epoch has scored.
Is Mistral Medium 3.5 open source?
Yes. Mistral AI publishes the weights, so it can be downloaded and self-hosted.
What inputs does Mistral Medium 3.5 support?
Mistral Medium 3.5 accepts text and images and replies in text. It is a reasoning model with high effort settings, supports tool calling and can return structured JSON output.
When was Mistral Medium 3.5 released?
Mistral AI released Mistral Medium 3.5 on Apr 29, 2026.
What are the best alternatives to Mistral Medium 3.5?
The closest current models from other labs on capability, price and release date are Qwen3 Max (Alibaba (Qwen), ECI 142.4, $1.20 / $6.00), Claude Haiku 4.5 (Anthropic, ECI 142.4, $1.00 / $5.00), GPT-5.5 Instant (OpenAI, ECI 142.5, $5.00 / $30.00) and GLM-5 (Z.ai (Zhipu), ECI 145.8, $1.00 / $3.20).