Claude Sonnet 5 (batch)

Claude Sonnet 5 batch is Anthropic's mid-tier reasoning model optimized for asynchronous processing, with a 1 million token context window.

Strengths

Sonnet 5 balances reasoning capability and throughput, performing well on analysis, summarization, and coding tasks while supporting the full 1 million token context window.

Best for

Batch workloads that need stronger reasoning than Fable but don't require the full capability of Opus, such as content analysis, report generation, and code review at scale.

Limitations

Not designed for real-time or streaming applications; for synchronous use cases, the standard Claude Sonnet 5 is appropriate, and for the most demanding reasoning tasks, Opus 5 or Fable 5.1 are better choices.