Overview
Claude Opus 5 is Anthropic's flagship model for demanding reasoning, coding and long-horizon agentic work. It is especially strong at end-to-end software tasks, code review and bug finding, visual analysis of charts and documents, complex office deliverables and coordinating parallel subagents.
The model improves substantially on Opus 4.8 while retaining the same $5 per million input tokens and $25 per million output tokens. Its adjustable effort settings preserve strong instruction following and tool use across extended tasks, while lower settings reduce latency and token use for everyday workloads.
Key capabilities
- State-of-the-art results on Frontier-Bench and GDPval-AA
- Strong root-cause analysis, code review and end-to-end software delivery
- 1M-token context with image, file and tool support
- Adjustable effort from low through max
At a glance
Frontier-Bench v0.1
State of the art
ARC-AGI 3
3× next-best model
Context
1M tokens
Pricing: Premium Opus pricing — $5 / 1M input tokens and $25 / 1M output tokens.
Pros & cons
What we like
- Excellent long-horizon coding and agentic reliability
- Careful verification and strong bug-finding judgment
- High quality remains available at lower effort settings
Trade-offs
- Premium pricing for high-volume workloads
- Maximum effort can add substantial latency
- Smaller models remain more economical for routine chat
The verdict
Claude Opus 5 is a major upgrade for difficult software engineering, analysis and knowledge work. Its combination of careful verification, long-horizon tool use and flexible effort control makes it Anthropic's strongest practical choice when reliability matters more than raw speed.
Best for: Complex coding, code review, visual analysis and long-running agents.
Frequently asked questions
What is Claude Opus 5 best at?
It is best suited to demanding reasoning, end-to-end software work, code review, visual document analysis and long-running agentic tasks that require reliable tool use.
How much does Claude Opus 5 cost?
The API price is $5 per million input tokens and $25 per million output tokens, the same base price as Opus 4.8.
What is Claude Opus 5's context window?
Claude Opus 5 supports a 1 million-token context window through OpenRouter, with up to 128,000 output tokens.