Claude Sonnet 4.5 (batch)

Claude Sonnet 4.5 in batch mode is Anthropic's mid-tier model optimized for asynchronous, non-real-time workloads with a 1 million token context window.

Strengths

Balances speed and capability with a large context window, making it efficient for processing long documents or multiple inputs in a single request.

Best for

Batch processing workflows where latency is acceptable but you need to work with documents or problems larger than a few hundred kilobytes of text.

Limitations

Superseded by Claude Sonnet 4.6 (batch) as of February 2026; for new projects, the newer generation offers the same pricing with incremental capability improvements.