Gemini 3.7 Flash vs Claude Fable 5.1

Pyyan / Compare / Gemini 3.7 Flash vs Claude Fable 5.1

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Language Models · verified 2 Sept 2026

Gemini 3.7 FlashGooglecurrent

Claude Fable 5.1Anthropiccurrent

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Specification	Gemini 3.7 Flash	Claude Fable 5.1
Summary	Cheap now, twice the price on 1 January 2027. The rate is introductory.	Same price as Fable 5, and cache reads cost a quarter of what they did.
Context	1M	1M
Input ($/Mtok)	$0.75	$10
Output ($/Mtok)	$3.75	$50
Licence	Proprietary	Proprietary
Max output	64K	128K
Parameters	Not published	Not published
Released	13 Aug 2026	1 Sep 2026
Model ID	gemini-3.7-flash	claude-fable-5-1
Category	Language Models	Language Models
Official	—	—

Highlighted rows are where these differ.

Introductory pricing of $0.75 in and $3.75 out per million tokens
Both rates double to $1.50 and $7.50 on 1 January 2027, which is worth budgeting for
Replaces 3.6 Flash as Google's volume tier

Best for high volume work.

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.