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Claude Fable 5.1

Anthropic
Anthropic
Flagship

Claude Fable 5.1

Claude Fable 5.1 - Anthropic's most capable widely released model, for the most demanding reasoning and long-horizon agent work, 1M context (official list price)

Context window

1M

tokens

Max output

128K

tokens

Input price

$10.00

/ 1M tokens

Output price

$50.00

/ 1M tokens

Core capabilities

text

Code generation

Chain-of-thought reasoning

Vision understanding

Quick start

Replace base_url and api_key below with your own to call Claude Fable 5.1. Fully OpenAI SDK compatible — no other code changes needed.

bash
curl https://api.nodebyt.com/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer sk-your-key" \
  -d '{
    "model": "claude-fable-5-1",
    "messages": [{"role": "user", "content": "Hello"}]
  }'

Other Anthropic models

FAQ

Q: How is Claude Fable 5.1 priced?

A: Pay per token: $10.00/M input, $50.00/M output. No monthly fee, no minimum spend. Credits never expire.

Q: How do I integrate Claude Fable 5.1? Any code changes?

A: Fully OpenAI-compatible — just swap base_url and api_key. Claude models also support the native Anthropic /v1/messages format. See the code snippets above.

Q: Is Claude Fable 5.1 stable through Nodebyt?

A: All requests go through our API gateway (api.nodebyt.com) with optimized third-party backbone routing. Average latency under 200ms, reliable under any network condition.

Q: What use cases does Claude Fable 5.1 support?

A: General chat, generation, and reasoning. Refer to Anthropic's official documentation for specific capabilities.

Q: Does Claude Fable 5.1 have a free tier?

A: New users get free credits after email verification, ready for immediate API testing. Top up from $10 afterwards, pay as you go.

Get started with Claude Fable 5.1

Free credits on sign-up. Pay as you go. $10 minimum top-up, no expiration.

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