Changelog
Every model addition and price change we detect, newest first.
- 2026-10-16: Renamed from Model Handbook to Fieldbook to AI. Same plain-English guide, new name.
- 2026-10-16: Review pass: task pages now show the free plan of a real app instead of a developer-only free model; plain-English rewrites of technical terms; one newsletter sign-up per page instead of two.
- 2026-10-16: Plan prices re-checked: Claude Max 20x ($200) and Microsoft 365 Premium ($19.99) now confirmed on the makers' own pages; Microsoft 365 Pro ($99.99) comes from a third party and is labeled that way; Perplexity monthly prices still unconfirmed (only the annual price is on its page).
- 2026-10-16: Added What should I pay? (app plans and prices), cost charts, a sort control, a weekly email and a Sponsor page.
- 2026-10-16: Relaunch in plain English: pick a task first (write, research, study, code, images, work docs, translate), see costs for everyday jobs, with raw prices on the Advanced page and workflows renamed Time-savers.
- 2026-10-16: Fieldbook to AI preview launched with 32 models, using prices from OpenRouter's public listing.