anthropic
Anthropic: Claude Opus 5.5
anthropic/claude-opus-5.5
For $1, you can send approximately:
~5.95messages
How do we get this number?
One message = ~7,000 input tokens + ~7,000 output tokens
Input cost per message7,000 x $4.00/M = $0.028000
Output cost per message7,000 x $20.00/M = $0.140000
Total cost per message$0.168000
Messages for $15.95
Context window
1.0M
tokens
Max response
128k
tokens
Input price
$4.00
per million tokens
Output price
$20.00
per million tokens
Modalities
Input:textInput:imageInput:fileOutput:text
Description
Claude Opus 5.5 is Anthropic's flagship model for demanding reasoning, coding, and long-horizon agentic work, succeeding Claude Opus 5. It is particularly strong at multi-step changes in large codebases, code...