Simon Willison’s Weblog

Anthropic: Message Batches (beta) (via) Anthropic now have a batch mode, allowing you to send prompts to Claude in batches which will be processed within 24 hours (though probably much faster than that) and come at a 50% price discount.

This matches the batch models offered by OpenAI and by Google Gemini, both of which also provide a 50% discount.

Update 15th October 2024: Alex Albert confirms that Anthropic batching and prompt caching can be combined:

Don't know if folks have realized yet that you can get close to a 95% discount on Claude 3.5 Sonnet tokens when you combine prompt caching with the new Batches API