I build a presentation tool for a living, so when people ask me which free AI deck tools are worth using, it usually means they lost a bet with their calendar and need 10 slides by noon. I respect that. I tested the free tiers of the most recommended tools in 2026, all with the same prompt: a deck on why my team switched to a four-day workweek.
The free tiers I actually tried
Gamma is still the one everyone names first. The free tier generates decks fast and the output looks polished in that "we used a nice template" way. My test deck came out with a solid structure — the argument, the evidence, the pushback slide. But every slide had the same rhythm. Same spacing, same one-line-per-point layout. For an internal deck that's fine.