Batch-processing variant of Claude Opus 5.5, Anthropic's Claude 5.5 flagship for agentic coding and long-horizon knowledge work with a 1M-token context window. Same capabilities as the standard model, offered at half the token price via asynchronous batch processing for large jobs that do not need real-time responses.
Cost rate
2x
Context
1M
Released
Sep 22, 2026
Input
TextImageFile
Output
Text
Support
ReasoningTool callingStructured outputs
Best at
The categories where this model ranks highest.
Writing, Literature, & Language
#3 路 top 1%
Entertainment, Sports, & Media
#3 路 top 1%
Mathematical
#4 路 top 1%
Image understanding
#6 路 top 4%