Unverified60% confidenceFactExact time
Mainstream large model APIs such as OpenAI GPT-4o and Anthropic Claude both use a per-token billing model, with input and output tokens priced separately.
2
Sources
60%
Confidence
Medium-term (~90 days)
Relevance
7/16/2026
First Seen
Valid until: 10/14/2026
Sources
Related Claims
UnverifiedLarge models are billed by the number of tokens, with every input (user message plus historical context) and output (model reply) counted, and the unit price of advanced models such as GPT-4/Claude is usually several times that of standard models.79% similarUnverified调用GPT、Claude、Gemini等模型API均需按Token付费77% similarUnverified早期GPT-3 API仅按总Token数统一计费，不区分输入输出，OpenAI在GPT-3.5时代开始分离输入/输出定价77% similarUnverifiedMajor providers such as Anthropic's Claude and OpenAI's GPT-4o allow caching of fixed prefix portions of requests, so that when the cache is hit, those tokens are not recomputed, reducing latency and cost.75% similarVerifiedGPT-4 was developed by OpenAI and Claude was developed by Anthropic, and the parameter scale of these models has reached the hundreds of billions level.75% similar
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