Unverified50% confidenceBenchmarkExact time
TTS首字节延迟约100-300ms
1
Sources
50%
Confidence
Long-term
Relevance
7/13/2026
First Seen
Sources
状态机语音Agent实战：Pipecat与Vapi的延迟与准确性权衡
redditr/aiagents7/12/2026
Related Claims
Unverified云端 TTS 服务的首字节响应时间通常为 200-500 毫秒，是延迟瓶颈的主要来源74% similarUnverified流式架构可将端到端首字节延迟（TTFA）从串行叠加的1-3秒压缩至300-500ms量级73% 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72% similarUnverified访问主内存的延迟高达200-300个时钟周期71% similarUnverified云端TTS服务的首字节响应时间通常200-500毫秒，本地部署的轻量TTS模型（如Piper、Kokoro-82M）可将延迟压至50毫秒以内，但音质通常略逊71% similar
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