Claude Fable 5 is a Mythos-class model from Anthropic, built for autonomous knowledge work and coding. It accepts text, image, and file input with text output, supports reasoning, and has a 1M-token context window. It is suited for long-running, complex, and asynchronous tasks that used to need frequent human check-ins. It is especially good at end-to-end work that would take a person hours, days, or weeks, including long-running, ambiguous, or highly multi-step problems. It executes well-scoped tasks with few mistakes, corrects itself through verification loops, and ships with strong safeguards.
$5.00market price $10.00
$0.50market price $1.00
$25.00market price $50.00
Throughput is how fast the model writes (tokens per second, higher is better). Time to first token is how long before the answer starts (lower is better).
Share of requests served without a server error. Client errors (4xx) do not count.
Works with the OpenAI SDK pointed at our base URL. Every parameter is in the API reference.
Tokens processed per day on NagaAI.
Claude Fable 5 is a Mythos-class model from Anthropic, built for autonomous knowledge work and coding. It accepts text, image, and file input with text output, supports reasoning, and has a 1M-token context window.
On NagaAI, Claude Fable 5 costs $5 per 1M input tokens and $25 per 1M output tokens. You pay only for what you use, with no subscription.
Claude Fable 5 reads up to 1M tokens in one request, counting the prompt and the answer together.
Yes. Claude Fable 5 can call your functions as tools and can answer in a JSON schema you give it.
It takes text and images as input and returns text.
Create an API key, copy the model ID from the top of this page and send requests with the OpenAI or Anthropic SDK pointed at NagaAI. The API section on this page has a ready example.
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