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Reduce costs and enhance performance with reusable responses.
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overview
OpenAI Prompt Caching enables developers to store and reuse responses from the API for up to 24 hours, significantly lowering costs associated with repeated prompts. This feature is designed to enhance performance while delivering high-quality outputs.
features
OpenAI Prompt Caching automatically optimizes your API usage, providing substantial benefits without the need for manual adjustments. This empowers developers to focus on building rather than managing costs.
use_cases
Prompt Caching is particularly beneficial for developers managing production applications that rely on static or repeated prompts. Whether you’re building chatbots, coding assistants, or customer service agents, this tool streamlines performance and costs.
Prompt Caching allows you to reuse prompt responses, which can lower input token costs by up to 75%, offering substantial savings as you scale your application.
Yes, Prompt Caching is automatically enabled for recent models such as GPT-4o and GPT-5.1, requiring no changes to your API usage.
To maximize the benefits, place static content at the start of prompts, use the prompt_cache_key for grouping similar requests, and monitor hit rates to optimize your prompts effectively.