AIChatting
Cheap, usable without an account, and the character count and per-message word limits are spelled out on the pricing page rather than buried. What you are buying is a wrapper over third-party models renamed in-house, with no API and no way to confirm which model you are actually talking to.
Pros
- The free tier runs without registration
- Weekly and annual billing, with the annual plan under $40
- Per-message word limits are published rather than left vague
- One account spans web, iOS and Android
Cons
- Models carry in-house names, so the real provider is opaque
- Pro pricing is not visible next to Basic on the plans page
- No API, no team features and no data-residency choices