Claude Opus 5
Claude Opus 5 is a flagship AI model developed by Anthropic designed for complex reasoning, coding, and agentic workflows. It supports a large context window of one million tokens and can process both text and image inputs to assist with intricate technical tasks.
Claude Opus 5 specs and pricing
- Provider: Anthropic
- Released: July 24, 2026
- Context window: 1M tokens
- Max output: 128K tokens
- Input: text, images, files
- Output: text
- Price: $5.00 input / $25 output per 1M tokens
- Reasoning: yes
- Tool calling: yes
What Claude Opus 5 is good at
- End-to-end software development
- Comprehensive code review and debugging
- Detailed visual analysis of documents and images
To-dos to try with Claude Opus 5
- Analyze this entire codebase and identify potential security vulnerabilities.
- Review these technical diagrams and summarize the architectural flaws.
- Read these project files and generate a step-by-step implementation plan for the new feature.
FAQ
- What is Claude Opus 5 primarily designed for? It is built for demanding reasoning, coding, and long-horizon agentic work.
- Can Claude Opus 5 process images? Yes, the model is capable of visual analysis and accepts both text and image inputs.
- How much does Claude Opus 5 cost? Claude Opus 5 costs $5.00 per million input tokens and $25 per million output tokens through OpenRouter. In todo.is a typical agent step costs about 17.5 credits ($1 = 100 credits).
- What is the context window of Claude Opus 5? Claude Opus 5 can read up to 1M tokens at once and write up to 128K tokens in one reply.
- Can I use Claude Opus 5 without coding? Yes. In todo.is you pick Claude Opus 5 as your agent's model and write to-dos in plain words, on the web, the Android app, WhatsApp or Telegram. No API key needed: credits are included, or you can bring your own key.
JavaScript is required to use the todo.is app.