Claude Mythos 5.1
Anthropic
API pricing
USD / 1M tokens
| Input | Output | Cached input |
|---|---|---|
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Input / output price · USD / 1M tokens
Timeline
Not on the active radar. A release or rename under this name is not confirmed.
A connection is possible; a shared identity is not confirmed.
Related signals: Claude Mythos 5.2
- · Evidence links · Anthropic · official articles
- · Confirmed use · Anthropic · official articles · Introducing Claude Mythos and Fable 5.1
- · Evidence links · Anthropic · official articles
Specifications
Claude Mythos 5.1 · Not on the active radar. A release or rename under this name is not confirmed.
- Input · USD / 1M tokens
- $10.00
- Output · USD / 1M tokens
- $50.00
- Cached input · USD / 1M tokens
- $0.25
Questions
How much does Claude Mythos 5.1 cost?
Pricing is $10.00 per million input tokens and $50.00 per million output tokens. Cached input is $0.25 per million.
When was Claude Mythos 5.1 released?
Its release date is not established. Signal Forge first recorded it on 7 Oct 2026.