Verified65% confidenceFactExact time
Mainstream large model APIs charge separately for input tokens and output tokens, with input tokens typically including the entire conversation history (i.e., the context).
3
Sources
65%
Confidence
Medium-term (~90 days)
Relevance
9/11/2026
First Seen
Valid until: 12/10/2026
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.80% similarUnverifiedMainstream model APIs charge separately for input tokens and output tokens, where input includes system prompts, context history, and retrieved document fragments78% similarUnverifiedLarge model services adopt a Token quota mechanism, where each model call consumes Tokens measured by the input and output text77% similarUnverifiedThe context window refers to the complete set of input and output tokens visible to a large language model at any given moment, consisting of input tokens plus output tokens.76% similarVerifiedLong conversations package and resend the entire context history to the model, which is counted toward the token usage of each request; the longer the conversation, the more tokens a single request consumes.74% similar
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