Gemini 3.8 Live vs Claude Fable 5.1

Pyyan / Compare / Gemini 3.8 Live vs Claude Fable 5.1

2 of 5

Language Models · verified 16 Sept 2026

Gemini 3.8 LiveGooglecurrent

Claude Fable 5.1Anthropiccurrent

Add another3 slots left

Specification	Gemini 3.8 Live	Claude Fable 5.1
Summary	Audio in, audio out, and it keeps talking while it runs your tools.	Same price as Fable 5, and cache reads cost a quarter of what they did.
Context	Not published	1M
Input ($/Mtok)	$0.75	$10
Output ($/Mtok)	$4.5	$50
Licence	Proprietary	Proprietary
Max output	Not published	128K
Parameters	Not published	Not published
Released	15 Sep 2026	1 Sep 2026
Model ID	gemini-3.8-live	claude-fable-5-1
Category	Language Models	Language Models
Official	Google ↗	—

Highlighted rows are where these differ.

Runs tools and API calls in the background while the conversation continues
97 languages, detected and switched mid conversation
$3 per million audio tokens in and $12 out, or half a cent and 1.8 cents a minute

Best for real time voice agents.

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.