Research
3d agoTtok 1.0 Updates Default OpenAI Tokenizer
Version 1.0 of ttok now defaults to the GPT-5 tokenizer. This update follows experiments by William Liu showing that GPT-5 and GPT-6 share the same 44,794-token vocabulary across multiple fixtures. The tool allows developers to verify token counts locally.
The Signal
It remains a small, incremental update for those tracking OpenAI's evolving model architectures.