Mistral Medium 3.5
mistralai/
Mistral model · Served by Mistral · live on the gateway
Pricing
About Mistral Medium 3.5
Mistral Medium 3.5 is a 128B dense open-weights flagship model for instruction-following, reasoning, coding, long-horizon agentic work, tool use, structured output, and multimodal prompts. It supports a 256k context window and configurable reasoning effort.
What it supports
- Tool calling (function calling)
- JSON mode and structured output
- Image input (vision)
- Audio input
- Extended reasoning
- Streaming responses
- OpenAI SDK, Anthropic SDK and any OpenAI-compatible client
Make a request
curl https://rapidrouter.ai/api/v1/chat/completions \
-H "Authorization: Bearer $RAPIDROUTER_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "mistralai/mistral-medium-3-5",
"messages": [{ "role": "user", "content": "Hello" }]
}'Frequently asked
How do I call Mistral Medium 3.5 through an OpenAI-compatible API?
Point any OpenAI-compatible client at https://rapidrouter.ai/api/v1 with a Rapid Router API key and set the model to mistralai/mistral-medium-3-5. The chat completions endpoint is https://rapidrouter.ai/api/v1/chat/completions.
What is the context window of Mistral Medium 3.5?
Mistral Medium 3.5 has a context window of 256,000 tokens on Rapid Router, and returns up to 32,768 output tokens per reply.
What can Mistral Medium 3.5 do?
On Rapid Router, Mistral Medium 3.5 supports tool calling, JSON mode, image input, extended reasoning.