Claude Fable 5
Anthropic· released 9 Jun 2026
anthropic/claude-fable-5- Input / 1M tokens
- $10
- Output / 1M tokens
- $50
Longest answer: 128K tokens
About
Claude Fable 5 is an Anthropic model for autonomous knowledge work and coding. It accepts text, image, and file inputs and produces text output, with vision and reasoning support. Its context window is 1,000,000 tokens, and it can generate up to 128,000 tokens in one response. The model is identified as anthropic/claude-fable-5 and belongs to Anthropic’s Mythos-class family. Input costs 10 USD per 1M tokens; output costs 50 USD per 1M tokens. The listed release and creation date is 2026-06-09. Tools are supported. For teams assessing it, the combination of large context capacity, multimodal input, and reasoning is relevant to work involving source material, documents, images, and coding tasks. Its output is text, even though it accepts image and file inputs.
Who it is for
It suits teams building knowledge-work or coding workflows that need text, image, and file inputs with reasoning support. Its large context window may fit tasks that bring substantial material into a single request.
What is good
- Accepts text, image, and file inputs
- One-million-token context window
- Supports reasoning and tools
- Maximum output is 128,000 tokens
What to know first
- Output is text only
- Input costs 10 USD per 1M tokens
- Output costs 50 USD per 1M tokens
Verdict
Claude Fable 5 combines broad input types, reasoning, and a 1,000,000-token context window for autonomous knowledge work and coding. Budget for separate input and output rates: 10 USD and 50 USD per 1M tokens, respectively.
Details
- Lab
- Anthropicopenrouter.ai · 3 Oct 2026
- Context
- 1,000Kopenrouter.ai · 3 Oct 2026
- Input price
- $10 / 1Mopenrouter.ai · 3 Oct 2026
- Output price
- $50 / 1Mopenrouter.ai · 3 Oct 2026
- Max output
- 128,000 tokensopenrouter.ai · 3 Oct 2026
- Inputs
- text, image, fileopenrouter.ai · 3 Oct 2026
- Open weights
- Noopenrouter.ai · 3 Oct 2026
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Sources
- openrouter.ai/anthropic/claude-fable-5· checked 3 Oct 2026