Claude Fable 5 - Hostlinku Docs

Overview

Claude Fable 5 is Anthropic’s flagship Mythos-class model optimized for long-horizon reasoning, agentic coding, and autonomous workflows. It supports text and image inputs with text output, featuring a 1M-token context window and 128K maximum output.

Property	Value
Provider	Anthropic
Slug	`claude-fable-5`
Context	1,000,000 tokens
Max output	128,000 tokens
Input	text, image
Output	text
Release	2026-06-09
Tags	creative

Capabilities

text
vision
image-input
file-input
pdf-input
tool-calling
function-calling
structured-outputs
json-mode
streaming
reasoning
extended-thinking
code-execution
web-search
code-generation
long-context
multilingual
multimodal

Pricing

Item	Price
Input (prompt)	$10
Output (completion)	$50
Cache read	$1
Cache write	$12.5

Prices are customer prices per 1M tokens for a Hostlinku API key, with 1 = $1. Actual cost per request follows the API key’s Service Mode and may change; check Console or GET /v1/models for current values.

Supported endpoints

Endpoint	Format	Support
`POST /v1/chat/completions`	OpenAI Chat Completions	available
`POST /v1/messages`	Anthropic Messages	native
`POST /v1/responses`	OpenAI Responses	adapted (bridge)

Endpoint and model availability follow the catalog and the API key’s Service Mode. If a model is unavailable for that mode, the request may be rejected with 400 MODEL_NOT_IN_SERVICE_MODE.

Example request

curl https://api.hostlinku.com/v1/chat/completions \
  -H "Authorization: Bearer sk-isi-api-key-kamu" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "claude-fable-5",
    "messages": [{ "role": "user", "content": "Hello!" }]
  }'

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Overview

Capabilities

Pricing

Supported endpoints

Example request

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