Expired50% confidenceBenchmarkExact time
The average time to first token (TTFT) of mainstream cloud-based LLM APIs is typically between 500 milliseconds and 2 seconds.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
7/16/2026
First Seen
Valid until: 10/14/2026(expired)
Sources
Related Claims
UnverifiedThe time-to-first-byte for cloud TTS services is typically 200–500 milliseconds, making it the primary source of latency bottlenecks.83% similarUnverified中心化API（如OpenAI）的首Token延迟（TTFT）通常在200-500毫秒之间82% similarUnverifiedCloud TTS services typically have a time-to-first-byte of 200–500 milliseconds, while locally deployed lightweight TTS models (such as Piper and Kokoro-82M) can reduce latency to under 50 milliseconds, though audio quality is generally slightly lower.80% similarUnverifiedWhen current mainstream large models handle complex code tasks, the time to first token (TTFT) is often between 2 and 8 seconds.77% similarVerified在典型的云端推理场景中，网络往返延迟通常在50-200毫秒之间74% similar
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