Anthropic's new top flagship — replaces the Opus tier as the strongest generally available model. Arena Elo 1508 (rank 1). 1M context, Adaptive Thinking always on, $10/$50 per MTok. Fable 5 + Mythos 5 (invite-only) launched together on June 9, 2026.
At a glance
Context
1M tokens
Input
text, image, code
Specifications
- Status
- Released
- Date
- June 9, 2026
- Lab
- Anthropic
- Origin
- US
- Type
- reasoning, multimodal
- Open weights
- —
- License
- proprietary
- Context
- 1M tokens
- Input
- text, image, code
- Output
- text, code