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Better prompt caching for GPT-6

OpenAI · OpenAI Blog · Sep 22, 2026 · Product Launches

GPT-6 improves prompt caching with higher hit rates, explicit breakpoints, and new latency/cost controls.

OpenAI announced prompt caching improvements for GPT-6, including higher cache hit rates, new diagnostics, explicit breakpoints, and controls to reduce latency and cost. As a power-player release referencing GPT-6, it signals both a next-gen model and infrastructure-level efficiency gains relevant to developers building on OpenAI.

openai gpt-6 prompt-caching latency cost-optimization

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