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Mistral: Codestral 2508 (batch)

mistralai/codestral-2508:batch · Mistral AIDeclared and measured agree

Tokenizer lineage (measured): Mistral
Evidence confidence: High
Declared tokenizer tag: Mistral
Entered catalogue: 1 August 2025
Last tested: Not yet measured
Measurement: Awaiting measurement

Evidence

✓ inherited from mistralai/codestral-2508: a serving variant shares its base model's tokenizer

Compare with Mistral: Codestral 2508

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This entry is a serving variant of Mistral: Codestral 2508. 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: Codestral 2508 (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 1 other entry	api_e7013bba
Context and output	256,000 context · 204,800 max output	declared
Reasoning contract	None declared	declared
Serving providers observed	None recorded yet	–

Declared record

What the catalogue claims about this model

Mistral's cutting-edge language model for coding released end of July 2025. Codestral specializes in low-latency, high-frequency tasks such as fill-in-the-middle (FIM), code correction and test generation. [Blog Post](https://mistral.ai/news/codestral-25-08)

Modalities: text+file->text
Declared tokenizer: Mistral
Prompt price: $0.15 / M tokens
Completion price: $0.45 / M tokens

Supported parameters

frequency_penaltymax_tokenspredictionpresence_penaltyresponse_formatseedstopstructured_outputstemperaturetool_choicetoolstop_p

defaults: {"temperature":0.3}

Catalogue entry

History

Every observation, kept as taken

1 August 2025Enters the OpenRouter catalogue declared as Mistral.

Cite this page as the evidence record for Mistral: Codestral 2508 (batch): the URL is stable, measurements are dated, and revisions append to the history above. Method: tokenizer fingerprinting, v1, 50 strings.