Claude Opus 5

by Anthropic

Claude Opus 5 is Anthropic's flagship large language model, released July 24, 2026. It supersedes Claude Opus 4.8 as the most capable model in the Claude lineup, designed for complex reasoning, research, and agentic tasks. Available via the Anthropic API and Claude.ai.

Large Language Models
Proprietary

Primary Use Cases

  • Complex research and analysis
  • Advanced coding and software engineering
  • Long-horizon agentic tasks
  • Scientific and technical reasoning

✅ Strengths

  • Flagship Anthropic model with highest capability tier
  • Strong safety documentation via published system card
  • Confirmed by Anthropic official announcement and Reuters

⚠️ Limitations

  • Higher cost than smaller Claude models
  • Not the default model for free/pro plans (Claude Sonnet 5 is default)
  • Restricted Fable/Mythos variants have separate access controls

Technical Specifications

Developer
Anthropic
Category
Large Language Models
Type
🧠 Foundation Model
License
UNKNOWN

Trust & Privacy

Health Status
🟢 Active
Trains on User Data
🔄 Opt-out available
Certifications
None listed

Ecosystem & Integrations

API Access
✅ Available
Chrome Extension
❌ No
Mobile App
✅ Available
Pricing Model
💰 Pay Per Use

Pricing Breakdown

API

Pay-per-use via Anthropic API