tiktoken

Term

Tiktoken is a tokenization library for processing text in AI models.

article 1 story calendar_today First seen: 2026-02-17 update Last seen: 2026-02-17 open_in_new Website menu_book Wikipedia

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tiktoken

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Reverse-engineering o200k_base: practical impacts for cost and input design

A new reverse-engineering analysis of OpenAI’s o200k_base tokenizer highlights how token choices shape cost, multilingual handling, and potential failure modes.

calendar_today 2026-02-17

openai tiktoken o200k-base gpt-4o o1