Claude Fable 5 / Mythos 5 set a new $10/$50 flagship API band
Anthropic launched Claude Fable 5 (GA June 9, 2026) and Claude Mythos 5 (limited availability via Project Glasswing) at $10/$50 per 1M tokens — a new top API band above Opus 4.8, double its $5/$25 rate, with a 1M context window.
Top API band was Claude Opus 4.8 at $5/$25 per 1M tokens (1M context).
Claude Fable 5 and Mythos 5 sit above Opus at $10/$50 per 1M (1M context); Batch API $5/$25, prompt-caching multipliers apply. Opus 4.8 ($5/$25), Sonnet 4.6 ($3/$15), and Haiku 4.5 ($1/$5) bands unchanged.
Anthropic introduced a new flagship API band in June 2026. Claude Fable 5 (model ID claude-fable-5) became generally available across the Claude API, Claude Platform on AWS, Amazon Bedrock, Vertex AI, and Microsoft Foundry on June 9, 2026, priced at $10/$50 per 1M input/output tokens with a 1M-token context window and 128k max output. Claude Mythos 5 (claude-mythos-5) carries identical pricing but is offered only in limited availability to approved Project Glasswing customers. The new band sits above Claude Opus 4.8 ($5/$25), which is unchanged, as are Sonnet 4.6 ($3/$15) and Haiku 4.5 ($1/$5). Batch API pricing for Fable/Mythos 5 is $5/$25 (50% off), and standard prompt-caching multipliers apply.
A new flagship API band arrives: Claude Fable 5 (GA June 9, 2026) and Claude Mythos 5 (limited availability via Project Glasswing) price at $10/$50 per 1M — double the Opus 4.8 band ($5/$25). A research-preview Fast mode adds a premium speed SKU (Opus 4.8 $10/$50; Opus 4.6/4.7 $30/$150), and Claude Managed Agents introduces a session-runtime meter at $0.08/session-hour on top of token rates. Claude.ai consumer and Team pricing is unchanged (Pro $17/$20, Team Standard $20/$25, Premium $100/$125).