Model Details
Owner
Anthropic
Released
Jun 2026
Status
Active
Context Length
1.0M
Max Output
128K
Provider
Anthropic
Where is Claude Mythos 5 a perfect fit?
Claude Mythos 5 is Anthropic’s restricted-access frontier model, specifically positioned for advanced cybersecurity and biology research. It shares the same underlying capabilities as Claude Fable 5, but does not include Fable’s additional safety classifiers.
- Authorized cybersecurity research and vulnerability discovery
- Securing critical and systemically important software
- Advanced defensive security research through Project Glasswing
- Biology and healthcare research requiring frontier-level reasoning
- Long-horizon research and agentic workflows
- Complex software engineering and code analysis
- Scientific reasoning requiring extensive context and sustained work
- Approved dual-use research where Fable 5’s additional safeguards would restrict legitimate work
- Authorized cybersecurity research and vulnerability discovery
- Securing critical and systemically important software
- Advanced defensive security research through Project Glasswing
- Biology and healthcare research requiring frontier-level reasoning
- Long-horizon research and agentic workflows
- Complex software engineering and code analysis
- Scientific reasoning requiring extensive context and sustained work
- Approved dual-use research where Fable 5’s additional safeguards would restrict legitimate work
Quick Model Estimate
Your GPT-5 Cost Estimate
💰 Total Cost
USD 3.00
for 1000 input + 1000 output tokens
📥 Input (1000 × $10.000000)
USD 1.5000
📤 Output (1000 × $50.000000)
USD 1.5000
Cost Breakdown
📥 Input 50%
📤 Output 50%
Prices updated daily from official provider data.
