Claude Fable 5 API: Pricing and Specs

Claude Fable 5 API

Claude Fable 5 is a large language model by Anthropic, available on the Venice API as claude-fable-5. Requests are anonymized, so the provider never sees your identity.Claude Fable 5 is a model from Anthropic designed for demanding reasoning and long-horizon agentic work. It features a 1M token context window, 128K max output tokens, always-on adaptive thinking, and strong multimodal capabilities.

Claude Fable 5 API pricing

Model ID	Variant	Privacy	Price
`claude-fable-5`	Standard	Anonymized	$10.00 / $50.00 per 1M

Claude Fable 5 specifications

Spec	Value
Provider	Anthropic
Released	Jun 10, 2026
Privacy	Anonymized
Status	Stable
Context window	1M tokens
Max output	128K tokens
Reasoning effort	low, medium, high, xhigh, max

How to use the Claude Fable 5 API

Send requests to POST https://api.venice.ai/api/v1/chat/completions with "model": "claude-fable-5" and your API key.

curl https://api.venice.ai/api/v1/chat/completions \
  -H "Authorization: Bearer $VENICE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "claude-fable-5",
    "messages": [{ "role": "user", "content": "Explain TEE attestation in two sentences." }],
    "reasoning_effort": "high"
  }'

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