Unverified50% confidenceFactExact time
TTFT (time to first token) refers to the latency from when a request is issued to when the model generates the first output token, and is mainly determined by the prefill stage.
1
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50%
Confidence
Long-term
Relevance
10/14/2026
First Seen
Sources
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Related Claims
UnverifiedLarge model inference is divided into two phases, Prefill and Decode; Prefill is a major component of Time to First Token (TTFT), while Decode corresponds to Time Per Output Token (TPOT).78% similarUnverifiedThe prefill stage of LLM inference processes all input tokens in parallel and generates the initial KV Cache; it is a compute-intensive operation and the direct determinant of TTFT.69% similarUnverifiedTime per output token (TPOT) measures the speed at which a model generates tokens one by one during the autoregressive decoding phase.63% similarUnverified流式处理机制允许LLM生成首个句子时即触发TTS合成，无需等待完整回复，从而压缩感知延迟62% similarUnverifiedThe TZ environment variable is used to set the system timezone of the container, directly affecting the time results returned by scripts and commands such as date.62% similar
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