Mistral: Mistral Medium 3.5

mistralai/mistral-medium-3-5 · Mistral AINot yet established
Declared family
Mistral
Evidence confidence
Unknown
Declared tokenizer tag
Mistral
Entered catalogue
30 April 2026
Last tested
Not yet measured
Measurement
Awaiting measurement

Evidence stack

Signals of different kinds, weighed together
SignalResultReference
Tokenizer signatureNot measured
API surfaceNo other entry shares this exact contractapi_66362643
Context and output262,144 context · – max outputdeclared
Reasoning contractOptional · efforts high, none · default highdeclared
Serving providers observedNone recorded yet

Declared record

What the catalogue claims about this model

Mistral Medium 3.5 is a dense 128B instruction-following model from Mistral AI. It supports text and image inputs with text output, and is designed for agentic workflows, coding, and complex...

Modalities
text+image+file->text
Declared tokenizer
Mistral
Prompt price
$1.50 / M tokens
Completion price
$7.50 / M tokens

Supported parameters

frequency_penaltyinclude_reasoningmax_tokenspresence_penaltyreasoningreasoning_effortresponse_formatseedstopstructured_outputstemperaturetool_choicetoolstop_p

defaults: {"temperature":null,"top_p":null,"top_k":null,"frequency_penalty":null,"presence_penalty":null,"repetition_penalty":null}

Catalogue entry

History

Every observation, kept as taken
  • 30 April 2026Enters the OpenRouter catalogue declared as Mistral.

Cite this page as the evidence record for Mistral: Mistral Medium 3.5: the URL is stable, measurements are dated, and revisions append to the history above. Method: tokenizer fingerprinting, v1, 50 strings. The raw data behind every figure is on the data page.