Mistral Medium Latest
Mistral Medium Latest is Mistral AI's frontier-class multimodal model for agentic and coding work, merging instruction following, configurable reasoning, and coding into one dense 128B model with a context window of 256K tokens.
import { streamText } from 'ai'
const result = streamText({ model: 'mistral/mistral-medium-3.5', prompt: 'Why is the sky blue?'})About Mistral Medium Latest
Announced April 29, 2026, Mistral Medium Latest is Mistral AI's first flagship merged model. Earlier lineups split the work across three families: Medium for instruction following, Magistral for reasoning, and Devstral for agentic coding. Mistral Medium Latest folds all three into a single dense 128B model and succeeds Mistral Medium 3.1 as Mistral AI's flagship mid-size tier.
Mistral Medium Latest scores 77.6% on SWE-Bench Verified and 91.4 on the τ³-Telecom agentic benchmark, per Mistral AI's announcement. The SWE-Bench result puts Mistral Medium Latest ahead of Mistral AI's earlier Devstral coding models.
Reasoning effort is configurable per request. Ask for a fast reply on simple prompts, or allocate more test-time compute for long agentic runs. The vision encoder handles variable image sizes and aspect ratios, so Mistral Medium Latest reads screenshots, documents, and diagrams alongside text. Native function calling and structured output support long-horizon tool use.
The weights are open under a modified MIT license. Through AI Gateway, you access Mistral Medium Latest without separate Mistral AI API credentials, with unified billing plus cost and latency visibility across every request.