Claude Opus 4.5 – Ultimate AI for Coding & Smart Agents
Claude Opus 4.5 is Anthropic’s smartest, most capable model yet with hybrid reasoning, cutting-edge coding, and enterprise-ready agents.
Trusted by users from 10,000+ companies
What Makes Claude Opus 4.5 Stand Out
Claude Opus 4.5 provides strong benchmark performance making it one of the best AI models.
Superior Coding Ability
Claude Opus 4.5 scored 80.9% on SWE-Bench Verified, making it the first model to cross the 80% threshold on this widely respected software-engineering benchmark.
Efficient and Cost-effective
Despite the performance gains, Opus 4.5’s pricing starts at US $5 per million input tokens and $25 per million output tokens, making high-end AI coding and reasoning more accessible.
Agentic Tasks Capabilities
Claude Opus 4.5 excels at multi-step workflows, long-horizon tasks, agentic tool use, and enterprise workflows such as spreadsheet automation and coordinated tool-use.
Smooth Long-Term Projects
Need a break? No problem. Claude Opus 4.5 keeps track of context and reasoning across extended sessions, so you don’t lose track of where you left off.
Why Claude Opus 4.5 Raises the Bar for Everyone
Claude Opus 4.5 delivers a broad set of improvements that make it compelling for developers and professionals alike.
Large Context Window
It supports a 200 K-token context window, allowing it to process and remember long documents or conversation histories without losing context.
Token-Efficient Execution
For complex tasks, Opus 4.5 uses up to 65% fewer tokens than older versions which reduces cost and speeds up processing.
Better Autonomous Agents
It handles multi-step, long-horizon workflows with improved tool-use and reasoning, enabling agents for better planning and execution.
Improved Code Generation
Opus 4.5 delivers state-of-the-art results on coding benchmarks making it a powerful assistant for coding and bug-fixing.
Strong Multi-Task Productivity
Beyond coding, the model handles docs, spreadsheets, slides, and more for a versatile toolset to cater professional needs.
Long-Form Output Quality
It can produce long, structured outputs while maintaining coherence, organization, and style over many pages.
Adaptive “Effort” Control
A new “effort” parameter allows users to balance speed and depth for quick tasks or deep, thoughtful work as needed.
Cross-Platform Availability
The model is available via official apps, APIs and on all major cloud platforms for easier integration into workflows.
Better Value and Accessibility
With improved efficiency and broadly available pricing, Opus 4.5 makes advanced AI capabilities more accessible for teams.
Frequently Asked Questions
See what other people have been asking about Claude Opus 4.5 and it's capabilities.