Claude Opus 4.5 (latest)
by Opper · family claude-opus · listed Nov 2025RTV
Flagship Claude model for deep reasoning, coding, and long-horizon agents
Current rates USD per 1M tokens
Input$5.00
Output$25.00
Cache read$0.50
Cache write$6.25
Against the market
On the record
- Model id
claude-opus-4-5- Context window
- 200K tokens
- Max output
- 64K tokens
- Input modalities
- text, image, pdf
- Output modalities
- text
- Reasoning
- yes
- Tool calls
- yes
- Open weights
- no
- Knowledge cutoff
- May 2025
- Released
- 2025-11-24
- Last updated
- 2025-11-24
- Provider docs
- opper.ai/models
Back of the envelope
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