Claude Opus 4.5 (batch)

Claude Opus 4.5 in batch mode is Anthropic's flagship reasoning model optimized for asynchronous, non-real-time workloads with a 200k-token context window.

Strengths

Delivers strong reasoning and problem-solving on complex tasks, with the full capability set of the standard Opus 4.5 model adapted for batch processing.

Best for

Batch processing workflows that prioritize accuracy and reasoning depth over response time, such as large-scale analysis, content generation, and complex problem-solving.

Limitations

The 200k-token context window is now smaller than later Opus models; Opus 4.6 and later offer 1M-token contexts, and for agentic or memory-intensive tasks, Claude Opus 4.7 (batch) provides an even larger 1M-token context.