Expired50% confidenceFactExact time
The time-to-first-byte for cloud TTS services is typically 200–500 milliseconds, making it the primary source of latency bottlenecks.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
7/16/2026
First Seen
Valid until: 10/14/2026(expired)
Sources
Related Claims
UnverifiedCloud 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.84% similarUnverifiedThe average time to first token (TTFT) of mainstream cloud-based LLM APIs is typically between 500 milliseconds and 2 seconds.83% similarUnverified在高并发场景下，一个平均延迟180ms的TTS服务大约每8次响应就有1次飙到400ms以上80% 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79% similarUnverified中心化API（如OpenAI）的首Token延迟（TTFT）通常在200-500毫秒之间78% similar
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