CLAUDE MODEL API

Claude Fable 5.1 API with transparent token pricing.

Claude Fable 5.1 extends Fable 5 for long-horizon reasoning and agentic workloads. WorldGate routes it through the same Fable channel and keeps the published customer rate aligned with Fable 5.

Get an API key
WorldGate input$3.20per 1M tokens
WorldGate output$15.00per 1M tokens
Referenced list price$3.20 / $15.00input / output
vs. reference0% Cheaperbased on displayed reference rates

MODEL OVERVIEW

The newest Fable generation for demanding reasoning and agentic work.

Claude Fable 5.1 extends Fable 5 for long-horizon reasoning and agentic workloads. WorldGate routes it through the same Fable channel and keeps the published customer rate aligned with Fable 5.

WorldGate bills actual input, output, and eligible cached tokens against a prepaid balance. The published price is the usage rate used by server-side billing.

OPENAI-COMPATIBLE

Use Claude Fable 5.1 with the client you know.

Keep credentials on your server. Replace the base URL and select the WorldGate model identifier.

const client = new OpenAI({
  apiKey: process.env.WORLDGATE_API_KEY,
  baseURL: "https://worldgateapi.com/v1",
});

const response = await client.chat.completions.create({
  model: "claude-fable-5.1",
  messages: [{ role: "user", content: "Hello" }],
});

QUESTIONS

Claude Fable 5.1 API FAQ

How much does Claude Fable 5.1 cost?

$3.20 per one million input tokens and $15.00 per one million output tokens. Verify current pricing before purchasing.

Is it OpenAI-compatible?

Yes. Use the WorldGate base URL, server-side API key, and model identifier claude-fable-5.1.

When should I choose this model?

The newest Fable generation for demanding reasoning and agentic work. Test representative prompts before moving production traffic.

Related Claude APIs

Claude Fable 5$3.20 input / $15.00 outputClaude Opus 5$0.26 input / $1.56 outputClaude Opus 4.8$0.26 input / $1.56 output

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