Anthropicclaude-fable-5-1

anthropic/claude-fable-5-1

featuredcodingtextreasoning
Open in Playground

Anthropic claude-fable-5-1: the Fable tier above Opus in Anthropic's Claude 5 family, for the hardest reasoning, research and coding work. Text and image input.

Pricing

USD per 1M tokens, billed per token. Cached input applies where the provider caches prompts.

Input
$10.00
Output
$50.00
Cached input
$0.250

Specifications

Context length
1M
Max output tokens
—
Input
text, image
Output
text
Endpoints
anthropic, openai
Released
Sep 1, 2026
Alias accepted
claude-fable-5-1

Example request

curl https://api.nxioai.com/api/v1/chat/completions \
  -H "Authorization: Bearer $NXIO_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"anthropic/claude-fable-5-1","messages":[{"role":"user","content":"Hello"}]}'

Price history

Every price change opens a new version. Past requests are billed with the version in effect at the time.

EffectiveUntilInputOutputCached inputSource
Oct 6, 2026current$10.00$50.00$0.250sync