OpenAI Tokenizer
Fewer than 5 people recommend it so far, so there's no written verdict. Here is what commenters said.
3recommend
0warn against
Feb 26, 2026first mention
Jul 30, 2026latest mention
Why people recommend it
“Great for getting particular about how to save tokens in prompt and tool definitions”
“You can play around with how text gets tokenized here”
Caveats and dissent
No one in these comments warned against it.
Threads where it came up
Data: openai-tokenizer.json. Quotes are verbatim; the verdict and theme labels are written by a model from these comments, and every clause links to its sources.
All comments 4
“Great for getting particular about how to save tokens in prompt and tool definitions”
“I tested it on few translations on wikipedia articles using”
I built something similar awhile back [1] and used OpenAI’s tokenizer playground [2] to recalculate tokens on a giant block of lorem ipsum text. I feel like this gives a much more accurate representation. [1] https://dave.ly/tools/tokenflow/ [2] https://platform.openai.com/tokenizer
“You can play around with how text gets tokenized here”