Anthropic
Anthropic Claude model for long-running agentic coding and knowledge work.
1M ctxUSD 4 / 1M input tok; USD 20 / 1M output tok
Introducing Claude Mythos 5AnthropicReleased June 9, 2026
Claude Mythos 5
Limited-availability autonomous intelligence model delivering breakthrough problem-solving across scientific and technical disciplines.
reasoning-llmProprietary API$10.00 / 1M tok (Limited Availability)Context: 1M (1,000,000 tokens)Arena ELO: 1545
Technical Specifications
Architecture Type
Fifth-Generation Frontier Autonomous Architecture
Total Parameters
Frontier Scale
Context Window
1M (1,000,000 tokens)
Max Output Tokens
128K (128,000 tokens)
Knowledge Cutoff
April 2026
Supported Modalities
text, code, vision, reasoning
License & Access
Anthropic Limited Commercial Terms
Benchmark Evaluations
Mmlu Pro
92.5
Gpqa Diamond
87.4
Swe Bench Verified
85.6
Chatbot Arena ELO
1545
Deep Architectural Overview
Claude Mythos 5 represents Anthropic’s most advanced autonomous reasoning engine. Available to approved enterprise partners and Project Glasswing participants under specialized governance protocols.
Strengths & Considerations
Core Strengths
- Frontier autonomous reasoning scores (87.4% GPQA Diamond, 85.6% SWE-bench)
- 1M token context with 128k output buffer
- Unparalleled scientific and technical hypothesis validation
Known Limitations
- Limited availability to approved enterprise security programs
Token & API Pricing
Input Tokens (1M)$10.00
Output Tokens (1M)$50.00
Cached Input (1M)$1.0000
Batch API Discount50% Off Standard
Pricing is verified directly against Anthropic's developer documentation and API rate sheets.
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