Calculator As a second tool, we use a calculator
that can perform simple numeric calculations; we
only support the four basic arithmetic operations.
Results are always rounded to two decimal places.

Wikipedia Search Our third tool is a search en-
gine that, given a search term, returns short text

snippets from Wikipedia. Compared to our ques-
tion answering tool, this search enables a model
to get more comprehensive information on a sub-
ject, but requires it to extract the relevant parts by
itself. As our search engine, we use a BM25 re-
triever (Robertson et al., 1995; Baeza-Yates et al.,
1999) that indexes the Wikipedia dump from KILT
(Petroni et al., 2021).
Toolformer