Verified65% confidenceFactTime unknown
OpenAI uses the tiktoken tokenizer for token metering.
3
Sources
65%
Confidence
Long-term
Relevance
6/1/2026
First Seen
Sources
One API：统一管理30+大模型的开源网关系统完整指南
githubsongquanpeng
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Related Claims
UnverifiedOpenAI的tiktoken库和HuggingFace的tokenizers库提供了可视化工具，允许用户在调用API前预估文本的token数量76% similarUnverifiedMainstream large model APIs (such as OpenAI and Anthropic) charge based on the number of input tokens, and every character in a tool definition is a billable unit.75% similarUnverifiedTiktokenizer是OpenAI开源的分词可视化工具，用于展示文本如何被切分为token73% similarVerifiedOpenAI provides the open-source tool tiktoken, which allows developers to estimate token counts before calling the API.70% similarUnverifiedThe billing unit for the OpenAI official API is the token; one token corresponds to approximately 0.75 English words or 0.5 Chinese characters, and input and output are billed separately.69% similar
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