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Pyyan / Compare / Gemini 3.8 Live Extended Thinking vs Claude Fable 5

Gemini 3.8 Live Extended Thinking vs Claude Fable 5

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Language Models · verified 16 Sept 2026

Gemini 3.8 Live Extended ThinkingGooglecurrent
Claude Fable 5Anthropiccurrent
3 slots left
SpecificationGemini 3.8 Live Extended ThinkingClaude Fable 5
SummaryTop of the speech to speech board, and it reasons out loud while it gets there.Most capable widely released model, for the hardest reasoning and long-horizon agentic work.
ContextNot published1M
Input ($/Mtok)$0.75$10
Output ($/Mtok)$4.5$50
LicenceProprietaryProprietary
Max outputNot published128K
ParametersNot published—
Released15 Sep 2026—
Model IDgemini-3.8-live-extended-thinkingclaude-fable-5
CategoryLanguage ModelsLanguage Models
OfficialGoogle ↗Anthropic ↗

Highlighted rows are where these differ.

Gemini 3.8 Live Extended Thinking

  • First on the Artificial Analysis Speech to Speech Quality Index at 82.6
  • 68.6% on tau-Voice and 97.7% on Big Bench Audio, both reported by Google
  • Speaks while it reasons, with cues such as let me check that

Best for hard tasks done by voice.

Full spec sheet →

Claude Fable 5

  • Thinking is always on — the `thinking` param is rejected
  • Raw chain of thought is never returned
  • Requires 30-day data retention; unavailable under ZDR

Best for the hardest problems.

Full spec sheet →