Claude Mythos
AnthropicProprietary
1 model2026Up to 1M ctx
About
Anthropic's frontier research model family, positioned above the public Claude 4 line. Released exclusively to invitation-only partners via Project Glasswing for defensive cybersecurity workflows.
Specifications(1 models)
| Model | Released | Context | Vision | Multimodal | Reasoning | Fn Calling | Tool Use | Structured Outputs | Code Exec |
|---|---|---|---|---|---|---|---|---|---|
| Claude Mythos Preview | 2026-04 | 1M | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
Frequently Asked Questions
- What is Claude Mythos?
- Anthropic's frontier research model family, positioned above the public Claude 4 line. Released exclusively to invitation-only partners via Project Glasswing for defensive cybersecurity workflows.
- How many models are in the Claude Mythos family?
- The Claude Mythos family contains 1 model.
- What is the latest Claude Mythos model?
- The latest model is Claude Mythos Preview, released in 2026-04.
