Claude Opus 4.5 (batch)

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

Strengths

Delivers strong reasoning and complex task performance across coding, analysis, and multi-step problems.

Best for

Batch workloads where latency is not a constraint and you need reasoning capability; Claude Opus 4.6 and later offer a 1M context window at the same price if you need longer contexts.

Limitations

200k token context window is smaller than later Opus and Sonnet releases; for standard (non-batch) inference, use Claude Opus 4.5 standard mode instead.