MODELS
by Mistral AI
Mistral Medium 3.5 is Mistral AI’s open v26.04 frontier-class multimodal model, listed with a 256k context window and API pricing for input and output tokens.
Mistral Medium 3.5 is described in Mistral AI’s official model card as an open v26.04 frontier-class multimodal model with a 256k context window. Mistral’s pricing page lists it under API pricing with text-to-text, agentic, multimodal, coding, and reasoning capabilities, using the alias mistral-medium-latest. Mistral AI’s announcement describes Mistral Medium 3.5 as a public-preview flagship 128B dense model that merges instruction-following, reasoning, and coding, and says it powers Vibe and Le Chat Work mode. OpenRouter and the Hugging Face repository also describe it as a dense 128B instruction-following model supporting text and image inputs with text output.
Use when you need a Mistral AI model for text-to-text, agentic, multimodal, coding, or reasoning workflows listed on the official pricing page. Use for long-context workloads where the official model card’s 256k context window is relevant. Use when text and image inputs with text output are needed, based on the OpenRouter and model-source descriptions.
Last updated May 31, 2026
