Mistral Medium 3.5
Mistral Medium 3.5 is a dense 128B instruction-following model from Mistral AI.
Specifications
| Lab | Mistral AI |
|---|---|
| Context window | 262.1K tokens |
| Input price | $1.50/1M |
| Output price | $7.50/1M |
| Release | Apr 2026 |
Strengths
- Dense 128B architecture for consistent quality
- Strong instruction following
- Good agentic and coding performance
- Supports image+text inputs
Weaknesses
- Below Mistral Large 3 on complex reasoning
- Moderate context window for its class
- Higher latency than MoE alternatives
Best for
- Instruction-following tasks
- Agentic coding workflows
- Multilingual enterprise apps
In Depth: Mistral Medium 3.5
Summary
Mistral Medium 3.5 is an AI model from Mistral AI.
Released in Apr 2026. It currently appears in the Overall category on LMRank. It takes text, image, and file input and produces text output, with a context window of 262.1K tokens. Input pricing is $1.50 per 1M tokens and output is $7.50 per 1M tokens on OpenRouter.