Claude Fable 5API
Anthropic's most capable model — frontier reasoning, long-horizon agents, 1M context.
Input price
$7.00
per 1M tokens
Output price
$35.00
per 1M tokens
Prompt caching
Pass cache_control on a stable prefix and cache hits bill at a fraction of input. Cache writes bill at the plain input rate.
Auto-derived from input × 0.1
Specs
- Model ID
claude-fable-5- Endpoint
POST /v1/chat/completions- Category
- Text
- Provider
- Anthropic
- Capabilities
- visionfunctionstreamingthinkinglong-context
Drop-in OpenAI compatibility
Point your existing OpenAI SDK at api.kunavo.com/v1 and swap the model id. No streaming changes, no SDK changes.
View docsClaude API pricing guideTry it
Set KUNAVO_API_KEY from /app/keys, then run any of the snippets below.
curl https://api.kunavo.com/v1/chat/completions \
-H "Authorization: Bearer $KUNAVO_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "claude-fable-5",
"messages": [
{"role": "user", "content": "Hello, Claude Fable 5"}
],
"stream": false
}'FAQ
How much does Claude Fable 5 cost?
On Kunavo, Claude Fable 5 is $7.00 per 1M input tokens and $35.00 per 1M output tokens — about 30% under Anthropic's official price. Failed requests are never billed, and it's pay-as-you-go — you only pay for successful calls.
Can I call Claude Fable 5 with the OpenAI SDK?
Yes. Set base_url to https://api.kunavo.com/v1, pass your Kunavo key, and set model to "claude-fable-5". Requests and responses are OpenAI-compatible; Claude is also available on the native /v1/messages endpoint.
What endpoint does Claude Fable 5 use?
Claude Fable 5 is called via POST /v1/chat/completions on Kunavo's OpenAI-compatible API.
What is Claude Fable 5 good for?
Claude Fable 5 is a text model from Anthropic, with support for vision, function, streaming, thinking, long-context.