Unverified75% confidenceFactTime unknown
中心化API（如OpenAI）的首Token延迟（TTFT）通常在200-500毫秒之间
1
Sources
75%
Confidence
Long-term
Relevance
6/1/2026
First Seen
Sources
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Related Claims
UnverifiedThe average time to first token (TTFT) of mainstream cloud-based LLM APIs is typically between 500 milliseconds and 2 seconds.82% similarUnverifiedWhen current mainstream large models handle complex code tasks, the time to first token (TTFT) is often between 2 and 8 seconds.78% similarUnverifiedThe time-to-first-byte for cloud TTS services is typically 200–500 milliseconds, making it the primary source of latency bottlenecks.78% similarUnverified国内用户访问OpenAI、Anthropic等海外大模型服务时，跨太平洋传输的基础延迟（RTT）通常在150-300毫秒之间75% 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.73% similar
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