Claude Opus 4.5
language modelAnthropic
Claude Opus 4.5 is Anthropic’s frontier reasoning model optimized for complex software engineering, agentic workflows, and long-horizon computer use. It offers strong multimodal capabilities, competitive performance across real-world coding and...
Key facts
| Made by | Anthropic |
|---|---|
| Type | language model |
| Released | November 24, 2025 |
| Reads at once | 200,000 tokens |
| Price (API, per million tokens) | $5 in · $25 out |
| Input → output | file, image, text → text |
Questions about Claude Opus 4.5
Who makes Claude Opus 4.5?
Claude Opus 4.5 is made by Anthropic.
When was Claude Opus 4.5 released?
We first saw Claude Opus 4.5 listed on November 24, 2025.
How much does Claude Opus 4.5 cost?
Through OpenRouter it costs $5 per million input tokens and $25 per million output tokens. Prices change, so check the provider before you build on it.
How much text can Claude Opus 4.5 read at once?
Up to 200,000 tokens, roughly 150K words.
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