T2-R1 in five minutes
A model reads tokens, which may be parts of words.
A space-split counter is a toy and is labeled as one.
Token counts affect cost and context. Confirm a vendor price before you quote it.
The 2017 transformer paper is the usual citation for the architecture family.
Different models tokenize the same sentence differently.
Do not compare two products by a word count. Compare token counts from each tokenizer, and say which tokenizer you used.
Sources and go deeper
- Vaswani and co-authors, Attention Is All You Need, 2017 paper last checked 2026-10
- Brown and co-authors, Language Models are Few-Shot Learners, 2020 paper last checked 2026-10
- Attention Is All You Need — Wikipedia wikipedia last checked 2026-10
- Large language model — Wikipedia wikipedia last checked 2026-10