Docs · 03
Powering your twin
The twin thinks with an AI engine, and the engine is included. Sign in with a Twinly account and your tasks, calls and website work run on Twinly's managed engine: no API keys, no provider dashboards, no per-token bill to watch. Start free with 5 tasks a day and upgrade when you want your twin working all day.
01The managed Twinly engine
Sign in on first launch and the brain is connected; that is the whole setup. The Free plan gives you 5 tasks a day with every feature included, no card needed, so you can put the twin to work before paying anything.
02Plans and what they include
| Plan | Price | What you get |
|---|---|---|
| Free | $0 | 5 tasks a day, every feature included, no card needed |
| Starter | $20 / month | Your twin every day: higher daily and weekly limits for tasks, browsing, and calls |
| Pro | $50 / month | About 3x the Starter limits, for heavier days of tasks and calls |
| Max | $100 / month | About 8x the Starter limits, for a twin that works all day |
Subscribe, switch plans, or cancel any time in the app under Account; checkout opens through Stripe in your browser and the plan lands on your account within a few seconds. Cancelling keeps the plan running to the end of the billing period. Extra usage tops up your balance whenever you want more, and referral credit ($10 to you and $10 to a friend who joins with your code) lands on the same balance.
The Developer API draws on the same plan and the same extra usage, so there is nothing separate to buy.
03How usage works
Each paid plan includes a daily and a weekly allowance, shown as a simple percentage in the app (the sidebar gauge and the Account screen), so you always know where you stand without doing math. Different tasks cost different amounts: a quick text or a calendar change is light, while long screen-driving runs are the heaviest. Allowances reset on their own schedule and do not roll over; extra usage and referral credit are spent only after the included allowance.
The Free plan's 5 tasks also share a daily usage ceiling, so a few very long tasks can end the free day before all 5 are used.
04Bring your own key (beta builds 2.1.3 and earlier)
Builds from the original free beta work differently: no Twinly account, and the twin thinks with your own AI provider key (Anthropic, OpenAI, or an OpenAI-compatible endpoint), entered in Settings and kept in your OS keychain. You pay that provider directly. Those builds keep working. Current releases run only on the managed engine and have no key field.