Updated daily at 05:00 UTC
- Released
- 7 Apr 2026
- Status
- Deprecated
- Context
- 1M
- Max output
- —
- Input per 1M tokens
- $25.00
- Output per 1M tokens
- $125.00
- Open weights
- No
- License
- proprietary
- Parameters
- —
- Knowledge cutoff
- —
- Reasoning
- —
- Modalities
- —
Category scores
Out of 100, from independent and third-party results only, by method category-2026-09-29.1.
Not enough independent results yet
Only independent and third-party results rank a model; self-reported and unattributed numbers never do.
Benchmark results
Every result we hold for this model, with who ran it and where it was published.
No benchmark results yet
Other Claude Mythos versions
- Claude Mythos 5.11 Sep 2026
- Claude Mythos 59 Jun 2026