Anthropic
Anthropic
Multimodal model · United States ·Jun 2026

Claude Fable 5

Multimodal Proprietary
1M
Context
4
Benchmarks

About Claude Fable 5

Claude Fable 5 is an AI model developed by Anthropic, in the multimodal category, released in 2026, made available as a proprietary (API-only) model. Claude Fable 5 is Anthropic's first generally available Mythos-class model, sitting above the Opus tier and described as.

On this page you'll find Claude Fable 5's full specifications, including a context window of 1M tokens, 4 benchmark results. Review provider pricing and benchmark scores below, or compare Claude Fable 5 head-to-head with other multimodal models.

→ More models by Anthropic → All multimodal models → AI benchmarks leaderboard

Links

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Claude Fable 5 benchmark scores▶
Compare on the benchmark table →
Benchmark Category Score Variant
OSWorld-Verified agentic 85%
Terminal-Bench 2.1 agentic 84.3%
SWE-bench Pro code 80%
SWE-bench Verified code 95%

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Frequently asked questions

What is Claude Fable 5? ▶

Claude Fable 5 is Anthropic's first generally available Mythos-class model, sitting above the Opus tier and described as It is tracked on GenAIList with its specifications, benchmark scores and provider pricing.

Who created Claude Fable 5? ▶

Claude Fable 5 was developed by Anthropic and released in 2026.

Is Claude Fable 5 open source or proprietary? ▶

Claude Fable 5 is a proprietary model. It is accessed through an API rather than by downloading the weights.

What is Claude Fable 5's context window? ▶

Claude Fable 5 supports a context window of 1M tokens.

How much does Claude Fable 5 cost? ▶

Pricing for Claude Fable 5 depends on the provider. See the providers table on this page for the latest API rates.

How does Claude Fable 5 perform on benchmarks? ▶

Claude Fable 5 is benchmarked across 4 evaluations on GenAIList, including OSWorld-Verified (85%). See the full benchmark table below and compare it with other models.

Introducing Claude Fable 5
Claude Fable 5 Is INSANE – Hands-On With the BEST Model Yet!
Claude Fable 5 is a freak
Claude Fable 5 Makes New Things Possible
Claude Fable 5 IS INCREDIBLE! Greatest AI Model Ever! (Fully Tested)
ANTHROPIC COOKED: Claude Fable 5: It's ACTUALLY Over (INSANE)
I Spent $200 Testing Claude Fable 5
I Tested Claude Fable 5 Against Opus So You Don't Have to
Is Claude Fable 5 Worth the Hype? (Technical Deep Dive)
First Look at Claude Fable 5: A Step-Change in Frontier AI Models?
Claude Fable 5 & Mythos 5 Explained | Benchmarks, Features & Demos
Claude Fable 5 in 7 Minutes
Anthropic Just Dropped Claude Mythos and Fable 5 (Full Breakdown)
[FR] Claude Fable 5 : deux fois plus cher, mais ca vaut le coup ?
[ES] Probe Claude Fable 5 (mi opinion)
[ES] NUEVO CLAUDE FABLE 5 (MYTHOS) - El Mejor Modelo, PERO...
[DE] Claude Fable 5: Die beste KI der Welt
[DE] MYTHOS Update von CLAUDE: Das neue Fable 5 Modell im Test!
[DE] Claude Mythos Fable 5 sind da! Alles was du wissen musst
[IT] A sorpresa arrivano Claude Mythos 5 e Fable 5
[IT] Uscita SHOCK di Anthropic: Claude Fable 5 e PAZZESCO
Introducing Claude Fable 5
How To Use Claude Fable 5 Better Than 90% Of The People

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