Claude Opus 4.8 (batch)

Claude Opus 4.8 in batch mode is Anthropic's previous-generation flagship reasoning model optimized for asynchronous processing, with a 1 million token context window.

Strengths

Delivers strong performance on complex multi-step reasoning, long-horizon agentic work, and knowledge-intensive tasks with reduced latency for non-real-time workloads.

Best for

Batch processing jobs where reasoning quality matters more than immediate response, such as large document analysis, multi-turn agentic workflows, or extended problem-solving tasks.

Limitations

Superseded by Claude Fable 5 and Claude Opus 5 for maximum reasoning capability; real-time applications should use the non-batch Opus 4.8 or a faster tier instead.