Mistral Medium 3.5 API Pricing

As of October 10, 2026, Mistral Medium 3.5 costs $1.50 per 1M input tokens and $7.50 per 1M output tokens on Mistral AI, with cache reads at $0.15 per 1M tokens. It has a 262,144-token context window and returns up to 262,144 tokens per response.

By Mistral AIModel ID mistral/mistral-medium-3-5Prices updated October 10, 2026Checked October 10, 2026

Input: $1.50 / 1M tokens
Output: $7.50 / 1M tokens
Cache read: $0.15 / 1M tokens
Context window: 262,144 tokens
Max output: 262,144 tokens
Providers: 2
Added to LiteLLM: June 2026

Mistral Medium 3.5 pricing by provider

3 listings across 2 providers. Token prices are in US dollars per 1M tokens. The highlighted row is the price quoted above.

Provider	Model name in LiteLLM	Input	Output	Cache read	Context
Mistral AI	`mistral/mistral-medium-3-5`	$1.50	$7.50	$0.15	256K
Mistral AI	`mistral/mistral-medium-3.5`	$1.50	$7.50	$0.15	256K
Azure AI Foundry	`azure_ai/mistral-medium-3-5`	$1.50	$7.50	–	128K

What Mistral Medium 3.5 costs in practice

1,000 requests with 2,000 input and 500 output tokens each

Mistral AI	$6.75
Azure AI Foundry	$6.75

100 long-document requests with 100,000 input and 2,000 output tokens each

Mistral AI	$16.50
Azure AI Foundry	$16.50

Mistral Medium 3.5 features

Function calling
Structured output
Image input
Reasoning

Use Mistral Medium 3.5 with LiteLLM

Call Mistral Medium 3.5 through the LiteLLM Python SDK, or put it behind the LiteLLM proxy and send OpenAI-format requests to /v1/chat/completions. LiteLLM tracks the cost of every request at these prices.

Python SDK

from litellm import completion

response = completion(
    model="mistral/mistral-medium-3-5",
    messages=[{"role": "user", "content": "Hello!"}],
)

Proxy config.yaml

model_list:
  - model_name: mistral-medium-3-5
    litellm_params:
      model: mistral/mistral-medium-3-5
      api_key: os.environ/MISTRAL_API_KEY

Call the proxy

curl http://0.0.0.0:4000/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer sk-1234" \
  -d '{
    "model": "mistral-medium-3-5",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

Mistral Medium 3.5 FAQ

How much does Mistral Medium 3.5 cost?

Mistral Medium 3.5 costs $1.50 per 1M input tokens and $7.50 per 1M output tokens on Mistral AI, with cache reads at $0.15 per 1M tokens.

What is the context window of Mistral Medium 3.5?

Mistral Medium 3.5 has a 262,144-token context window and returns up to 262,144 tokens per response.

Which providers offer Mistral Medium 3.5?

Mistral Medium 3.5 is available from 2 providers through LiteLLM: Mistral AI and Azure AI Foundry.

How do I call Mistral Medium 3.5 with an OpenAI-compatible API?

Use the LiteLLM Python SDK with model="mistral/mistral-medium-3-5", or add the model to the LiteLLM proxy's config.yaml and send requests to /v1/chat/completions from any OpenAI client. LiteLLM tracks the cost of every request at the prices on this page.

What features does Mistral Medium 3.5 support?

Mistral Medium 3.5 supports function calling, structured output, image input and reasoning.

When did LiteLLM add Mistral Medium 3.5?

Mistral Medium 3.5 was added to LiteLLM's model price file in June 2026.

Sources

Prices come from LiteLLM's open-source model_prices_and_context_window.json, which LiteLLM uses to calculate the cost of every request. Provider pricing pages:

LiteLLM docs: Mistral AI, Azure AI Foundry.

Provider pages: Mistral AI, Azure AI Foundry.