WhichAI / Models / Claude Fable 5

Claude Fable 5

· verified October 14, 2026

public paid api in Generator writing reasoning agents

Provider

Statuspublic

AA Intelligence Index49.6 (official, read October 14, 2026)

Released2026-06-09

Context window1M

ModalitiesText + vision

API price $/1M (in / out)$10 / $50 · up to 128K output tokens

Speedn/a

AccessClaude Pro / Max plans (usage credits since July 7) · API $10/$50 per 1M tokens

In one line

Anthropic's newest flagship (Mythos-class) - tops the AA index at max effort and leads creative-writing boards for voice, subtext and character work; briefly export-controlled, now globally available.

Coding89

Reasoning92

Writing93

Agents & tools90

Category scores (0-100) are WhichAI blended ratings: public category leaderboards plus editorial judgment. Guidance, not official measurements.

Alternatives worth a look

Claude Opus 5 (Anthropic) · AA 50.8Released July 24, 2026 · Claude Pro / Max plans · API $5/$25 per 1M tokens (Fast mode $10/$50)
Muse Spark 1.3 (Meta) · AA 48.1Released September 2, 2026 · API $1.25/$4.25 per 1M tokens · Contributor tier $0.10/$0.20
GPT-6 Sol (OpenAI) · AA 47.6API $2/$10 per 1M tokens on OpenRouter · listed September 22, 2026

Head-to-head: Claude Fable 5 vs Claude Opus 5 · Claude Fable 5 vs GPT-5.6 Sol · Claude Fable 5 vs Claude Opus 4.8

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Artificial Analysis Intelligence Index, official scale (the number published on artificialanalysis.ai), relayed by OpenRouter and refreshed automatically: last read October 14, 2026. 209 models carry a current official measurement. A value marked ~ is converted from an earlier snapshot because no current measurement is published; an unmeasured model is never ranked. Context, price, modality and listing dates come from the public OpenRouter model list (refreshed automatically on the live site; static copy retrieved October 3, 2026) and vendor pages. Missing values are not published or not yet verified - shown as -. Sources are linked inside the app (the Ranking chapter and About > Methodology).