TTFT strongly influences perceived responsiveness and exposes queueing, prompt-processing and model-startup delays.
LATENCY & PERFORMANCEAI SRE
TTFT — Time to First Token
TTFT measures how long the user waits from sending a request until the first generated token arrives.
The answer streams quickly once it starts, but users wait 6.5 seconds before seeing anything because GPU queues are saturated.
What p50, p95 and p99 TTFT targets should this service tier maintain?
REMEMBERTTFT is the AI equivalent of 'how long before the system feels alive?'
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