Claude Haiku 4.5 (batch)

Claude Haiku 4.5 in batch mode is Anthropic's fastest and most cost-effective model, optimized for asynchronous processing with a 200k-token context window.

Strengths

Delivers fast inference and minimal resource footprint, making it well-suited for high-volume or latency-tolerant workloads where throughput matters more than reasoning depth.

Best for

Batch jobs, classification tasks, content moderation, and other asynchronous workflows that don't require real-time responses or complex reasoning.

Limitations

Not designed for complex reasoning, multi-step problem-solving, or tasks requiring deep analysis; the 200k context window is smaller than newer Claude models and insufficient for very long documents.