Unverified50% confidenceFactExact time
TTFT is heavily affected by input length, concurrency level and provider queuing policy, so cross-provider comparisons should be measured under the same prompt length and concurrency conditions.
1
Sources
50%
Confidence
Long-term
Relevance
10/19/2026
First Seen
Sources
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Related Claims
UnverifiedEngines that pursue extreme throughput tend to sacrifice TTFT, making them more suitable for offline batch processing scenarios (such as data annotation and document summarization) rather than real-time conversational scenarios sensitive to response speed.69% similarUnverifiedThe High configuration with extended chain-of-thought reasoning needs to process a large number of internal reasoning tokens during the prefill stage, so TTFT is typically several to tens of times that of the standard version.68% similarUnverifiedLonger context means higher time-to-first-token (TTFT), and token count is directly linearly correlated with inference costs.68% similarUnverifiedTwo common metrics for evaluating local model speed are time to first token (TTFT) and generation speed (tokens/s).66% similarUnverified对流式响应场景，应重点关注首Token延迟（TTFT）而非整体完成时间66% similar
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