Claude Opus 4.1
language modelAnthropic
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...
Key facts
| Made by | Anthropic |
|---|---|
| Type | language model |
| Released | August 5, 2025 |
| Reads at once | 200,000 tokens |
| Price (API, per million tokens) | $15 in · $75 out |
| Input → output | image, text, file → text |
Questions about Claude Opus 4.1
Who makes Claude Opus 4.1?
Claude Opus 4.1 is made by Anthropic.
When was Claude Opus 4.1 released?
We first saw Claude Opus 4.1 listed on August 5, 2025.
How much does Claude Opus 4.1 cost?
Through OpenRouter it costs $15 per million input tokens and $75 per million output tokens. Prices change, so check the provider before you build on it.
How much text can Claude Opus 4.1 read at once?
Up to 200,000 tokens, roughly 150K words.
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