A phone-number plan can include several different costs. The number itself, connected call time, text messages, provider charges, platform fees, and taxes may not all behave the same way. A useful comparison starts by defining the workflow and its expected usage.
Look at the billing units
A per-minute plan should explain what counts as a minute and how usage is measured. SMS can involve message segments rather than a simple count of text bubbles. An account can also have a platform fee or a separate number cost. Read the final checkout details and applicable agreement.
What topdoer.ai charges
For business agents, Starter is $0.25 per call minute with no platform fee and $15 in trial credits. Growth is $0.18 per call minute plus a $99 monthly platform fee, or $79 a month billed annually. Transfers to a person are free, and calls are billed per second after the first minute. Enterprise deployments are quoted for the work.
For an assistant that needs its own number, the Phone plan is $9 for the first month, then $19 a month or $190 a year, with published monthly limits. The pricing page shows every plan side by side.
Model a real month
Estimate the number of conversations, average duration, texts, and peak concurrency. A workflow with a few long calls has different needs from many short requests. The pricing calculator should use approved rates and show which assumptions are included, rather than producing a precise-looking number from unknown inputs.
Read the limits with the price
A flat monthly headline does not remove fair-use limits, country coverage, concurrency, or permitted-use rules. Introductory pricing also needs a clear renewal price. Keep your budget and the actions an assistant may request under review as usage changes.
Set it up with the right boundaries
Start with a configured workspace, an authenticated account, and a number that is approved for the workflow. Verify the owner phone and test with a destination you control. Keep the first request narrow enough to review without guessing what a successful result should look like.
Before you rely on it, check that the plan, the number, your consent rules, and the usage limits fit the work. If something is not set up, the assistant should say so plainly rather than report a success that did not happen. The person using the assistant should always be able to stop and review the next action.
Explore the Phone plan, read the MCP overview, or book a demo to talk through a specific workflow. The best first setup is one your team can explain, test, and review.