📋 AI Changelog

Claude Fable 5

✅ Active

First Claude 5 family model: a Mythos-class model made safe for general use with additional safeguards for cyber, bio-chem, and distillation requests

Provider list prices

Context Window
1M
Input Price
$10.00/1M
Output Price
$50.00/1M
Released
Jun 9, 2026

Capabilities

textvisionextended-thinkingtool-usecode

Crazyrouter API catalogue

Crazyrouter prices: $6.5 / $32.5

Catalogue checked: 2026-10-10T14:22:39+00:00. USD per 1M tokens, default group. The first context tier is shown; long contexts may cost more. This is a gateway catalogue snapshot, not a provider release announcement.

Get API Access →Current API models
curl https://crazyrouter.com/v1/chat/completions \
  -H "Authorization: Bearer $CRAZYROUTER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"claude-fable-5","messages":[{"role":"user","content":"Hello"}],"max_tokens":64}'

Version History

Sep 1, 2026Update

Superseded by Claude Fable 5.1 and moved to the legacy model list

Jul 20, 2026Update

Fable 5 became a standard feature of Anthropic's higher-tier subscription plans after several extensions of the launch promotion

Jun 12, 2026Update

Access to Fable 5 and Mythos 5 was temporarily restricted following a U.S. Department of Commerce export-control directive; Anthropic later confirmed access was restored

Jun 9, 2026New Release

Claude Fable 5 released as a Mythos-class model for general use, alongside Claude Mythos 5 for Project Glasswing partners; 1M context window and up to 128K output tokens

Jun 9, 2026Pricing Change

Pricing set at $10.00 per 1M input tokens and $50.00 per 1M output tokens, less than half of Claude Mythos Preview