---
title: "TTFT, TPOT, ITL, E2E & Throughput"
description: "The LLM latency and throughput metrics, from time to first token and inter-token latency to end-to-end latency and tokens per second, on a real timeline."
canonical_url: "https://fanout.sh/inference-eng/curriculum/04-01"
md_url: "https://fanout.sh/inference-eng/curriculum/04-01.md"
access: "public"
---

# TTFT, TPOT, ITL, E2E & Throughput

The LLM latency and throughput metrics, from time to first token and inter-token latency to end-to-end latency and tokens per second, on a real timeline.

---
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