Unverified50% confidenceFactExact time
RTF (Real-Time Factor) is defined as the ratio of the computation time required to generate audio to the duration of that audio, with a 5x real-time speed corresponding to an RTF of 0.2.
1
Sources
50%
Confidence
Long-term
Relevance
8/31/2026
First Seen
Sources
Related Entities
Related Claims
UnverifiedThe average time to first token (TTFT) of mainstream cloud-based LLM APIs is typically between 500 milliseconds and 2 seconds.67% similarUnverifiedThe end-to-end latency of a real-time AI tutor is composed of three stacked segments: ASR latency (50–500ms), LLM first-token generation latency (100–2000ms), and TTS first audio frame latency (50–300ms).65% 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64% 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.64% similar
Cite This Claim
Stable URI
https://kongchang.com/claim/831904API
curl https://kongchang.com/api/v1/knowledge/claims/831904MCP
get_claim(id=831904)