What is a KV cache in language-model inference?
A key-value cache stores intermediate attention state from tokens already processed by a model. Reusing compatible cached state can avoid repeating some prefill computation, especially when requests share a prompt prefix or context.
Answered in
A Bigger AI Cache Can Save GPU Time—If the Network and Reuse Rate CooperateSupermicro, IBM and NVIDIA proposed persistent KV-cache storage for long prompts. Their headline speedup is a vendor test, not a universal inference result.
Read the full analysisOther questions this article answers
More how ai actually works questions
- What changed in Gemini Omni 1.2 Flash?
- Can Gemini Omni 1.2 change a person's speech?
- Does a SynthID watermark prove that a video is truthful?
- What did Apple open to developers?
- Can customers use these integrations now?
- Does the preview have regional or age limits?
- What is Google Dreambeans?
- Does Dreambeans need access to every Google app?
Every answer on Crashtech is written by the editor of the article it comes from — never auto-summarised. Browse all answers or the How AI Actually Works beat.