Mistral Large 4 vs Claude Fable 5.1

Pyyan / Compare / Mistral Large 4 vs Claude Fable 5.1

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Language Models · verified 10 Oct 2026

Mistral Large 4Mistralpreview

Claude Fable 5.1Anthropiccurrent

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Specification	Mistral Large 4	Claude Fable 5.1
Summary	A trillion parameters in preview, with the weights promised but not shipped.	Same price as Fable 5, and cache reads cost a quarter of what they did.
Context	1M	1M
Input ($/Mtok)	$1.36	$10
Output ($/Mtok)	Not published	$50
Licence	Not published	Proprietary
Max output	Not published	128K
Parameters	1.05T total, 49B or 52B active	Not published
Released	6 Oct 2026	1 Sep 2026
Model ID	mistral-large-4	claude-fable-5-1
Category	Language Models	Language Models
Official	Mistral ↗	—

Highlighted rows are where these differ.

Preview API only: weights are promised by the end of October and the licence is unpublished
Sources disagree on active parameters, 49B in early coverage and 52B in the documentation
1M token context, with a 1.6B parameter vision encoder

Best for trying a European frontier model.

Matches or beats Fable 5 at low and medium effort, and pulls clear at high effort
Cache reads cut to 25% of the old price, so re-reading a long context got much cheaper
Identical model to Mythos 5.1 underneath; the difference is the safeguards

Best for coding and long-running work.