Mistral: Mistral Medium 3.5 (batch)

mistralai/mistral-medium-3-5:batch · Mistral AIDeclared and measured agree

Tokenizer lineage (measured): Mistral
Evidence confidence: High
Declared tokenizer tag: Mistral
Entered catalogue: 30 April 2026
Last tested: Not yet measured
Measurement: Variant: inherits its base model’s measurement

Evidence

✓ inherited from mistralai/mistral-medium-3-5: a serving variant shares its base model's tokenizer

Compare with Mistral: Mistral Medium 3.5

This entry is a serving variant of Mistral: Mistral Medium 3.5. A variant shares its base model's tokenizer by construction, so the measurement lives on the base record and this page inherits it.

Identity statement

Mistral: Mistral Medium 3.5 (batch) is Mistral AI's model. Its measured tokenizer sits with the Mistral group, which is evidence that it builds on the Mistral tokenizer. Tokenizer reuse is normal engineering, open vocabularies travel between labs, and this says nothing against Mistral AI's authorship of the model itself.

Evidence stack

Signals of different kinds, weighed together

Signal	Result	Reference
Tokenizer signature	Not measured	–
API surface	Identical contract to 2 other entries	api_e77b232e
Context and output	262,144 context · 209,715 max output	declared
Reasoning contract	Optional · efforts high, none · default high	declared
Serving providers observed	None 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: $0.75 / M tokens
Completion price: $3.75 / 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 (batch): the URL is stable, measurements are dated, and revisions append to the history above. Method: tokenizer fingerprinting, v1, 50 strings.