Claude Fable 5

Name: Claude Fable 5
Brand: Anthropic
SKU: claude-fable-5

Claude Fable 5 is a Mythos-class model from Anthropic, built for autonomous knowledge work and coding. It supports reasoning and long-running, complex, asynchronous tasks that previously required frequent human check-ins, with a 1M-token context window and text, image, and file inputs.

claude-fable-5

Open Relay View integration

relay/request.mjsready to route

POST https://api.pipellm.ai/v1/messages
Authorization: Bearer $PIPELLM_API_KEY
Content-Type: application/json

Model: claude-fable-5
See the provider documentation for request parameters.

CONTEXT1M contextprompt window

MAX OUTPUT128Kper response

INPUT$10.00 / Mtoken price

OUTPUT$50.00 / Mtoken price

Route configuration_

Choose a supported call format.

Select a format below to view its documentation. Use the displayed converter route when calling through PipeLLM.

ENDPOINThttps://api.pipellm.aiOne base URL for OpenAI Chat Completions, Responses, Anthropic, and Gemini.

SUPPORTED CALL FORMATS

OpenAI/openai/v1/chat/completionsDocs Responses/responses/v1/responsesDocs Anthropic/anthropic/v1/messagesDocs Gemini/gemini/v1beta/models/{model}:generateContentDocs Choose a call format to open its request and response documentation.

MODEL IDclaude-fable-5Use this in every request

GOVERNANCEPolicy controlledApprovals and tool rules apply

PROVIDER AVAILABILITY2 routes

Provider	Context	Max output	Discount	Input / M	Output / M
AWS	1M context	128K	—	$10.00 / M	$50.00 / M
Anthropic	1M context	128K	—	$10.00 / M	$50.00 / M

Displayed pricing is per one million tokens and may vary by provider.

SUPPORTED SURFACESactive

input: textoutput: texttool usecache control

Relay governs model access with the same routing policy that Lens keeps visible and auditable.