Unverified50% confidenceFactExact time
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
1
Sources
50%
Confidence
Long-term
Relevance
8/12/2026
First Seen
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.80% 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.76% similarUnverifiedSTT、LLM、TTS三段串行叠加，仅处理延迟就超过650毫秒，不包括服务间网络跳转耗时73% similarUnverified每条DNS记录都附带TTL值，指定递归解析器可缓存该记录的秒数，常见设置从300秒到86400秒不等72% similarUnverified主流TTS方案如ElevenLabs、Azure Neural Voice和Google WaveNet的首字节延迟约为150-300毫秒70% similar
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