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What metrics matter for LLM inference observability (TTFT, TPOT, ITL)?

This story is from 2026-10-30. It is preserved in the archive; the latest stories are on the live feed.

Track time to first token (TTFT), time per output token (TPOT), and inter-token latency (ITL) together, because each exposes a different aspect of inference effectiveness. TTFT reflects queueing and prompt processing, TPOT summarizes streaming speed, and ITL reveals stutter inside the stream. Key t…

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  1. 2026-10-30 21:42 · DEV Community — AI
    What metrics matter for LLM inference observability (TTFT, TPOT, ITL)?

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