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Mistral Large 3 2512 vs Mistral Medium 3.1

Both are Mistral models. Mistral Large 3 2512 was added to OpenRouter on 2025-12-01, Mistral Medium 3.1 on 2025-08-13.

From the 2026-10-24 catalog snapshot. Prices are US dollars per million tokens.
FieldMistral Large 3 2512Mistral Medium 3.1
ProviderMistralMistral
FamilyMistralMistral
ProvinceMaple HighlandsMaple Highlands
Context window262K tokens131K tokens
Maximum output210K tokens105K tokens
Input / 1M tokens$0.500$0.400
Output / 1M tokens$1.50$2.00
Acceptstext, files, imagestext, files, images
Producestexttext
ReasoningNoNo
Tool useYesYes
Added to OpenRouter2025-12-012025-08-13
Model IDmistralai/mistral-large-2512mistralai/mistral-medium-3.1

Questions and answers

Which is cheaper, Mistral Large 3 2512 or Mistral Medium 3.1?

It depends on the mix: Mistral Medium 3.1 is cheaper for input ($0.400 vs $0.500), Mistral Large 3 2512 for output ($1.50 vs $2.00) per million tokens. At three input tokens per output token, Mistral Large 3 2512 costs less. On input, Mistral Medium 3.1 is 20% cheaper.

Which has the larger context window?

Mistral Large 3 2512: 262K tokens against 131K for Mistral Medium 3.1 (2× as long).

What can one do that the other cannot?

Nothing among reasoning, tool use and image input: both support tool use and image input.

Answers are computed from the 2026-10-24 catalog snapshot.

See Mistral Large 3 2512 in 3DSee Mistral Medium 3.1 in 3D