Claude Opus 4.5
Anthropic · Flagship Claude model for deep reasoning, coding, and long-horizon agents
Key facts
- Provider
- Anthropic
- Context window
- 200K tokens
- Max output
- 64K tokens
- Input price
- $5 / M tok
- Output price
- $25 / M tok
- Knowledge cutoff
- May 2025
- Released
- Nov 24, 2025
- License
- —
Capabilities
ReasoningTool callingStructured outputFile attachmentsTemperature controlOpen weights
Reasoning options
- effort low · medium · high
- budget_tokens min 1024
Pricing
USD per million tokens, list API rates.
- Input
- $5
- Output
- $25
- Cache read
- $0.5
- Cache write
- $6.25
Modalities
- Input
- Text, Image, Pdf
- Output
- Text