Claude Opus 4.1
Claude Opus 4.1 is an updated version of Anthropic’s flagship model, offering improved performance in coding, reasoning, and agentic tasks. It achieves 74.5% on SWE-bench Verified and shows notable gains...
Claude Opus 4.1 specs and pricing
- Provider: Anthropic
- Released: August 5, 2025
- Context window: 200K tokens
- Max output: 32K tokens
- Input: images, text, files
- Output: text
- Price: $15 input / $75 output per 1M tokens
- Reasoning: yes
- Tool calling: yes
FAQ
- How much does Claude Opus 4.1 cost? Claude Opus 4.1 costs $15 per million input tokens and $75 per million output tokens through OpenRouter. In todo.is a typical agent step costs about 52.5 credits ($1 = 100 credits).
- What is the context window of Claude Opus 4.1? Claude Opus 4.1 can read up to 200K tokens at once and write up to 32K tokens in one reply.
- Can I use Claude Opus 4.1 without coding? Yes. In todo.is you pick Claude Opus 4.1 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.