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Claude Fable 5

AnthropicModel IDclaude-fable-5
C

Claude Fable 5

AnthropicModel IDclaude-fable-5

Claude Fable 5 is an advanced Anthropic model built for demanding reasoning, long-horizon agentic work, advanced coding, research, and complex knowledge tasks. It features a 1M-token context window, up to 128K output tokens, always-on adaptive thinking, vision, and strong tool-use capabilities.

ModeText / Image → Text
Input price$10 / 1M tokens
Output price$50 / 1M tokens
Context length1M tokens

Capabilities & limits

Use cases
Not available
Model capabilities
Not available
Model Brand
Anthropic
Input modality
Text / Image
Output modality
Text
Max output
128K tokens

Pricing

ProviderBilling typePrice summary
C
Anthropic-Custom
Per token
Input price$10per 1M tokens
Completion price$50per 1M tokens
Cache read price$1per 1M tokens
Cache write price$12.5per 1M tokens
C
Anthropic-Balanced
Per token
Input price$10per 1M tokens
Completion price$50per 1M tokens
Cache read price$1per 1M tokens
Cache write price$12.5per 1M tokens

Integration

Code Example

curl http://127.0.0.1:4179/v1/messages \
  -H "Authorization: Bearer <YOUR_API_KEY>" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "claude-fable-5",
    "messages": [
      {
        "role": "user",
        "content": "Hello"
      }
    ]
  }'

Replace <YOUR_API_KEY> with the API key generated on your token management page.

Authentication

All requests must include the Authorization: Bearer <TOKEN> header.

Endpoint Path

POST
anthropic

Supported Parameters

ParameterTypeDefaultDescription
integer-Maximum number of output tokens. Claude Fable 5 supports up to 128K output tokens.
stringhighControls the model's reasoning effort. Supported values include low, medium, high, xhigh, and max.
booleanfalseWhether to stream the response incrementally using server-sent events.

Rate Limits

RPM

No rate limits configured

RPM = requests per minute.