Lex vs Notion AI
Compare Lex and Notion AI on pricing, free tier, open source, API, self-host, verdict and momentum.
Both are writing tools. Lex is freemium (free tier; Pro from ~$16/mo (sources differ $16-18/mo, $96-145/yr — confirm on the Stripe pricing table)) with an API and a free tier; Notion AI is paid (limited AI trial on free/Plus; full AI in Business $20/member/mo (yearly)) with none of those flags. The catalog stamp is situational for Lex and situational for Notion AI, last verified 2026-08-24 and 2026-08-24 respectively.
Auto-paired from catalog data — the verdicts are hand-set, the pairing is algorithmic.
Lex
Minimal AI-native writing app — Google Docs with a co-writer built in.
Notion AI
AI assistant embedded in Notion — summarize, draft and search your workspace.
| field | Lex | Notion AI |
|---|---|---|
| pricing | freemium · free tier; Pro from ~$16/mo (sources differ $16-18/mo, $96-145/yr — confirm on the Stripe pricing table) | paid · limited AI trial on free/Plus; full AI in Business $20/member/mo (yearly) |
| free tier | yes | no |
| open source | no | no |
| api | yes | no |
| self-host | no | no |
| verdict | situational | situational |
| momentum | steady | steady |
| last verified | 2026-08-24 | 2026-08-24 |
| key limitation | A subscription on top of what ChatGPT Canvas partially does free. | Only makes sense if you already pay for Notion. |
The call
Pick Lex if you need a free tier first.
Pick Notion AI for teams already living in Notion who need workspace-wide AI s…
Lex sources
Notion AI sources
Open live compare →Lex pageNotion AI pageLex.jsonNotion AI.json