Unverified50% confidenceFactExact time
The Chat Completions API's streaming protocol pushes data in units of delta incremental fragments, and the consumer only needs to concatenate the text in order.
1
Sources
50%
Confidence
Long-term
Relevance
10/14/2026
First Seen
Sources
Related Entities
Related Claims
VerifiedAPI billing covers both input tokens and output tokens, and as a conversation extends, the input tokens carried in each request grow linearly.66% similarUnverifiedMost APIs automatically append conversation template markers before and after the input, and these hidden costs are usually a few dozen tokens.65% similarUnverified早期的 Chat Completions API 以对话轮次为核心抽象，Response API 的设计哲学更接近函数调用，输出可被程序直接消费的结构化数据65% similarVerifiedMainstream large model APIs charge separately for input tokens and output tokens, with input tokens typically including the entire conversation history (i.e., the context).65% similarUnverifiedChat Completion API的上下文并非由系统自动保存，模型本身是无状态的，需要开发者通过messages消息列表手动传入历史对话记录64% similar
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