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/anthropic/claude-fable-5

C

Anthropic: Claude 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 per M tokens
Output price$50 per M tokens
Context length1M tokens
Listed at2026-06-09T00:00:00Z

Anthropic

Latency—
Throughput—
Upload rate—
Context length1M tokens
Max output128K tokens
Input price$10per 1M tokens
Output price$50per 1M tokens
Cache read$1per 1M tokens
Cache write$12.5per 1M tokens

Performance

Avg TPS—
Avg latency—
Avg success rate—
TPS—
TTFT—
Latency—
Success rate—

Success rate

Speed

Code Example

curl ${API_BASE_URL}/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

GroupRPMTPMRPD

RPM = requests per minute, TPM = tokens per minute, RPD = requests per day. Limits apply by token group.

Pricing

ProviderBilling typePrice summary
C
Anthropic-Default
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