Claude Fable 5

Overview

A Mythos-class model for demanding reasoning and long-running autonomous work, with always-on adaptive thinking. It is billed from the same balance as every other model and tool here, and the price of each call comes back in the response.

Prices in USD per million tokens, using your plan when signed in.

Your balance and per-call records come from /v1/credits and /v1/generation.

Use it

Point your client at the gateway and pass this model id. Nothing else changes.

import Anthropic from "@anthropic-ai/sdk";

const client = new Anthropic({
  baseURL: "https://gateway.agentsky.dev",
  apiKey: process.env.AGENTSKY_API_KEY, // ast_…
});

const message = await client.messages.create({
  model: "anthropic/claude-fable-5",
  max_tokens: 256,
  messages: [{ role: "user", content: "Summarise this ticket." }],
});
console.log(message.usage.cost); // USD, in the response

Questions

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