AI Radar

Mistral Small 3.1

Available · Language, Multimodal

Mistral Small 3.1 is a 24B-parameter model from Mistral AI that builds on Mistral Small 3, adding image understanding and a context window of up to 128k tokens. It was released with base and instruct open weights under Apache 2.0 and offered via API on La Plateforme and Google Cloud Vertex AI. [1] [2] Primary source

Timeline of Mistral Small 3.1 →

Claims and evidence

  • Released Primary source[1]page date; Availability [3]March 17, 2025 [4]release date
  • Deprecated Primary source[5]Deprecated table, Mistral Small 3.1 (mistral-small-2503)
  • Retired Primary source[5]Deprecated table, Mistral Small 3.1 (mistral-small-2503) [4]Retirement date
  • Status AvailableApache 2.0 weights are still downloadable from Mistral AI's Hugging Face organisation; the API model mistral-small-2503 was retired on 2025-11-30. Primary source[2] [6] [7]Model Lifecycle: Mistral Small 3.1 Instruct and Base, status Active
  • Replaced by Mistral Small 4Replacement named for the API model when checked on 2026-10-01. Primary source[5]Deprecated table, Mistral Small 3.1, Alternative [4]Replacement
  • Change · Modality Adds image input, so the model can understand images as well as text.Compared with Mistral Small 3 Primary source[1] [2]Key Features: Vision
  • Change · Context length Context window of up to 128k tokens, up from 32k for Mistral Small 3.Compared with Mistral Small 3 Primary source[1] [8]Context
  • Change · Other Mistral AI says text performance improved.Compared with Mistral Small 3 Primary source[1]
  • Input text, image Primary source[4]Modalities [1]second paragraph [2]Key Features: Vision
  • Output text Primary source[4]Modalities
  • Open weights Yes Primary source[1]Availability [2] [6]
  • Context window 128k tokens Primary source[1]second paragraph [4]Context
  • Parameters 24B Primary source[2]first paragraph [4]Weights table, Parameters (B)
  • Access API, Open-weights download, cloud partnerAt launch on la Plateforme, on Hugging Face and on Google Cloud Vertex AI; NVIDIA NIM and Microsoft Azure AI Foundry were announced for the following weeks. Primary source[1]Availability

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