Claude Fable 5

ANTHROPIC Developer Architecture Profile

OpenRouter ↗HuggingFace ↗

Intelligence (ELO)1500Chatbot Arena Verified

Max Context Limit1,000,000Max Out: 128,000 tokens

Prompt Caching90% OFF$1.00 / 1M cached

Standard API / 1M$60.00🧠 Deep Reasoner

Model Capabilities & Contract SLAs

Reasoning
Agentic
Coding & Logic
Fictional
📋 Strict JSON Schema
🛠️ Native Tool Calling
🧠 Extended Test-Time Reasoning

Claude Fable 5 is a Mythos-class model from Anthropic, built for autonomous knowledge work and coding. It supports text, image, and file inputs with text output, with reasoning support and...

Granular Pricing Matrix

Input Tokens (Standard Prompt)$10.00 / 1M

⚡ Cached Input (Prompt Cache Read)90% OFF$1.00 / 1M

Output Tokens (Completion)$50.00 / 1M

Pricing data via OpenRouter. Sync: 10/2/2026

Evaluate Competitors

VS Engine MatchupClaude Fable 5 vs OpenAI: GPT-5.6 Luna Pro (batch)VS Engine MatchupClaude Fable 5 vs OpenAI: GPT-5.6 Luna (batch)VS Engine MatchupClaude Fable 5 vs Anthropic: Claude Opus 4.6 VS Engine MatchupClaude Fable 5 vs Google: Gemini 2.5 Pro Preview 06-05 VS Engine MatchupClaude Fable 5 vs Anthropic: Claude Fable 5.1 (batch)VS Engine MatchupClaude Fable 5 vs OpenAI: GPT-5.6 Luna