How much does the Mistral Medium 3.5 API cost?

Mistral Medium 3.5 costs $0.4 per million input tokens and $2 per million output tokens. A workload of 10M input and 1.5M output tokens per month costs about $7.00.

What is the context window of Mistral Medium 3.5?

Mistral Medium 3.5 supports a context window of 131,072 tokens (131K).

Is Mistral Medium 3.5 open source?

No — Mistral Medium 3.5 is a proprietary model available through Mistral AI's API and partner platforms.

What are the best alternatives to Mistral Medium 3.5?

The closest alternatives by overall capability are Qwen3-Max, GPT-5.5, Gemini 3 Pro, Gemini 2.5 Pro. See the comparison pages for detailed head-to-head breakdowns.

Mistral Medium 3.5

Name: Mistral Medium 3.5
Price: 0.4 USD
Author: Mistral AI

Mistral AI·Mar 2026proprietary

Mistral Medium 3.5 is the French lab's price-performance champion, continuing the Medium 3 line's pitch: 90% of flagship quality at roughly an eighth of flagship cost. Its real differentiation is strategic — EU jurisdiction, GDPR-native data residency, and genuine on-premise deployment offerings that US hyperscaler labs don't match. For European enterprises with data-sovereignty requirements it is frequently the only frontier-adjacent option on the shortlist.

Benchmark results

No verified benchmark results tracked yet for Mistral Medium 3.5. This page is updated as official evaluations are published.

Where it shines

EU data residency and on-prem enterprise deployment
Strong multilingual European-language performance
Aggressive $0.40/$2 pricing

Alternatives to Mistral Medium 3.5

Qwen3-Max

Alibaba's trillion-parameter API flagship — frontier-adjacent quality with strong agentic tool use at mid-tier prices.

GPT-5.5

OpenAI's flagship reasoning model with a 1M-token context window, built for hard coding, science and long-horizon agentic work.

Gemini 3 Pro

Google's November 2025 frontier breakout — 91.9% GPQA Diamond and 37.5% HLE made it the reasoning leader of its generation.

Gemini 2.5 Pro

Google's 2025 workhorse flagship — first mainstream thinking model with a 1M context, still widely deployed.

Frequently asked questions

How much does the Mistral Medium 3.5 API cost?: Mistral Medium 3.5 costs $0.4 per million input tokens and $2 per million output tokens. A workload of 10M input and 1.5M output tokens per month costs about $7.00.
What is the context window of Mistral Medium 3.5?: Mistral Medium 3.5 supports a context window of 131,072 tokens (131K).
Is Mistral Medium 3.5 open source?: No — Mistral Medium 3.5 is a proprietary model available through Mistral AI's API and partner platforms.
What are the best alternatives to Mistral Medium 3.5?: The closest alternatives by overall capability are Qwen3-Max, GPT-5.5, Gemini 3 Pro, Gemini 2.5 Pro. See the comparison pages for detailed head-to-head breakdowns.