Anthropicclaude-fable-5
Claude Fable 5
Anthropic's most intelligent model, for the hardest problems.
Fable 5 is Anthropic's most capable model — built for the most demanding reasoning and long-running agentic work, where getting the answer right matters more than anything else.
Hardest problemsLong-horizon agentsDeep reasoning
Specs
Context window1M tokens
Max output128K tokens
InterfaceOpenAI-style Chat Completions · Anthropic-style Messages
Price / 1M$7.50 / $37.50was $10 / $50
Capabilities
- ReasoningSupported
- VisionSupported
- Tool callingSupported
- StreamingSupported
- JSON output—
Why teams pick it
- Anthropic's most capable model for reasoning and agentic work
- Sustains long, autonomous multi-step runs end to end
- 1M-token context for whole-repo and long-document work
Call Claude Fable 5
Claude Fable 5 answers on either API below — pick the one your code already speaks and just swap in your Inferray key.
/v1/chat/completions · OpenAI-style Chat Completions · openai SDK or plain HTTP
curl https://api.inferray.com/v1/chat/completions \
-H "Authorization: Bearer inferray_..." \
-H "Content-Type: application/json" \
-d '{
"model": "claude-fable-5",
"messages": [{"role": "user", "content": "ship it"}]
}'/v1/messages · Anthropic-style Messages · @anthropic-ai/sdk SDK or plain HTTP
curl https://api.inferray.com/v1/messages \
-H "Authorization: Bearer inferray_..." \
-H "Content-Type: application/json" \
-d '{
"model": "claude-fable-5",
"max_tokens": 1024,
"messages": [{"role": "user", "content": "ship it"}]
}'