Key points
- AI agents are usage-priced: Twilio lists Conversation Relay from $0.07 per minute, and a standard US text segment at $0.0083.
- Texts, voice minutes, phone numbers and carrier fees are billed separately from the AI layer, so your real bill has several lines.
- The FCC says AI-generated voice calls generally require consumer consent unless an exception applies.
- Which agent can book, qualify or follow up must be confirmed in each vendor's own documentation before you pay.
- State call-recording laws are not covered here, so check them before you record any call.
An AI agent can cover the four jobs that eat a small team's day: answering texts and calls, booking appointments, qualifying leads and following up. You pay by usage. Twilio lists Conversation Relay from $0.07 per minute, and a standard US text segment costs $0.0083. Under the FCC's reading of the TCPA, AI-generated voice calls generally require consumer consent unless an exception applies.
One limit up front: no pricing page proves that a given agent can do all four jobs on its own. Confirm each job in the vendor's own documentation before you commit.
Which AI agent tool fits which job?
We can't honestly name one winner, because capabilities differ by vendor and by plan. What we can do is show what each job costs and what to check. Use this table as a buying checklist.
| Job | Cost pieces you can verify (as of October 2026) | What to confirm with the vendor |
|---|---|---|
| Answering calls | Conversation Relay from $0.07 per minute, plus voice charges billed separately | Does the agent pick up live, or only handle voicemail and missed calls? |
| Answering texts | $0.0083 per 160-character segment, plus possible carrier fees | Can it reply on its own, and can it hand off to you? |
| Booking appointments | No verified price in the pages we cite | Does it write to your calendar and avoid double-booking? |
| Qualifying leads | Operators from $0.005 per 1,000 characters (Twilio-authored) | Can you set your own questions and a pass or fail rule? |
| Follow-ups | Text segments at $0.0083 each, sent at the default rate limit | Can it stop when a customer replies or opts out? |
Ask every vendor to demo the exact job you care about with your own phone number. A feature list is not proof.
How much does an AI agent cost?
Costs come in layers, and each layer has its own price. Twilio says its Conversations product is pay-as-you-go and charges separately for each building block. It also says underlying SMS, voice, WhatsApp and chat costs are billed separately from conversation orchestration costs.
| Line item (Twilio, as of October 2026) | Listed price |
|---|---|
| Conversation Relay | From $0.07 per minute |
| Conversation ingestion | From $0.0002 per 1,000 characters |
| Twilio-authored Operators | From $0.005 per 1,000 characters |
| Custom Operator | $0.002 per 1,000 input characters and $0.018 per 1,000 output characters |
| US SMS, inbound or outbound | $0.0083 per 160-character segment (SMS pricing) |
Twilio also states that additional carrier fees may apply to US SMS. Phone-number recurring charges are separate from usage charges, per its help center.
These are usage prices, not a monthly total. Storage, integrations and taxes can add cost too.
What does an all-in-one CRM charge instead?
Some CRMs bundle the channels. AttackDesk includes texting, calling, email, phone numbers and AI agents inside the CRM. It has a pay-as-you-go option with no monthly fee: a text costs 3.1 cents and a call costs 5.8 cents a minute.
Its monthly plans are $29, $79, $197 and $329, priced per company rather than per user, and each lowers the usage prices. Carrier registration for texting carries a one-time setup fee of $27 for low-volume and sole-proprietor registration, or $69 for standard registration.
What would a small month actually cost?
Here is arithmetic on the listed prices. These are example volumes, not a forecast for your business.
- A 5-minute AI call on Conversation Relay: 5 x $0.07 = $0.35 for that layer, before voice charges.
- 300 one-segment texts at Twilio's base rate: 300 x $0.0083 = $2.49, before carrier fees.
- A 300-character reply: it spans two 160-character segments, so it costs 2 x $0.0083 = $0.0166.
- One Custom Operator pass: 2,000 input characters and 500 output characters cost $0.004 + $0.009 = $0.013.
- 300 texts at AttackDesk pay-as-you-go: 300 x $0.031 = $9.30.
- 100 call minutes at AttackDesk pay-as-you-go: 100 x $0.058 = $5.80.
Compare scope, not just the rate. A per-minute AI layer and a bundled per-minute call price may cover different things, so ask what each line includes.
How do you set up a missed-call text-back?
This is the simplest agent job to start with. It needs the CRM to know which calls you missed. AttackDesk records every call as answered, voicemail or missed, so an AI agent can text back the calls you couldn't pick up.
Whatever tool you use, follow these steps:
- Create one rule: a call logged as missed or voicemail triggers one text within a few minutes.
- Write the text in plain words, name your business, and say who is texting.
- Add a stop path. Tell people they can reply STOP, and make sure the system honors it.
- Route replies that mention price, a complaint or an emergency to a person.
- Test with three phones: yours, a friend's and one on a different carrier.
- Review the first 20 conversations by hand before you widen the rule.
For a similar pattern in a trade business, see how to set up automated follow-ups for unapproved estimates.
How do you set up lead qualifying and follow-ups?
Keep the first version small. Pick three questions that decide whether a lead is worth your time, such as service needed, location and timeline.
Then define stages in your pipeline: New, Asked Questions, Qualified, Booked, Lost. The agent moves a lead only when it has an answer for each question.
For follow-ups, set a ceiling. For example, three texts over seven days, then stop and mark the lead Lost. Those numbers are an example, so set them to fit your sales cycle.
Mind the speed limits when you send in bulk. Twilio's default outbound SMS rate on SMS-capable US and Canadian long codes is one message segment per second. Its default outbound voice-call rate is one call per second, according to its help center. At one segment per second, 100 single-segment texts take about 100 seconds to leave the queue.
If your CRM lets you change its own setup, you can add fields for these answers. Each AttackDesk company gets its own app code that it can change with its own AI tools or a developer, plus API and MCP access. For more on where agents sit in a CRM, read what an agentic CRM is.
Do AI voice calls need customer consent?
Generally, yes. The FCC states that AI-generated voice calls generally require consumer consent unless an exception applies. It also says the TCPA's restrictions on artificial or prerecorded voice calls encompass current AI technologies that generate human voices.
For telemarketing, the bar is higher. The FCC says telemarketing robocalls using an artificial or prerecorded voice require prior express written consent and an opt-out mechanism during each robocall.
Whether your call counts as telemarketing, informational, transactional or emergency-related can change the consent standard. Have a lawyer classify each call type before you automate it.
Do you have to tell people it's an AI?
For covered AI-generated calls, yes. The FCC's published rule text states that callers must disclose AI-generated voice or text content when obtaining consent. It also says covered callers must identify the responsible business and disclose whether the call uses an AI-generated voice at the beginning of the message.
This article does not claim a blanket federal rule that every AI customer-service interaction must announce itself. Still, a one-line opener is cheap: "This is the scheduling assistant for [Business Name], an AI."
What about recording calls?
State call-recording consent laws are outside what this article covers. Before you record any call, ask a lawyer about the states where your callers live.
Until then, use the safe habit of saying at the start of the call that it may be recorded, and log that the notice was given.
What are the rules for AI texting?
Treat consent as a field in your CRM. Record the date, the wording the customer agreed to, and how they agreed. Keep the opt-out working in every message flow.
Carriers add a practical layer. Twilio states that additional carrier fees may apply to US SMS, and AttackDesk submits a business's carrier registration for texting. Budget for both and ask your provider what registration it needs.
What should you check before turning an agent on?
- Each job (calls, texts, booking, qualifying, follow-up) is confirmed in the vendor's documentation.
- You have the full price list: AI layer, texts, voice minutes, phone numbers, carrier fees and taxes.
- Consent is recorded for every contact the agent will call or text.
- The AI disclosure and business name come at the start of any AI voice message.
- A human takes over on complaints, emergencies and anything the agent can't answer.
- You have checked your state's recording rules.
To see where agents fit among other tools, browse our AI CRM page and all 18 CRMs compared. For the bigger question of whether agents replace your CRM, read what the vendors show.
Common questions
How much does it cost for an AI agent?
It depends on the layers you use. As of October 2026, Twilio lists Conversation Relay from $0.07 per minute and US SMS at $0.0083 per 160-character segment, with phone numbers and carrier fees extra. AttackDesk lists pay-as-you-go at 3.1 cents a text and 5.8 cents a call minute, or plans of $29, $79, $197 and $329 per company.
How are small businesses using AI agents?
The common jobs are answering texts and calls, booking appointments, qualifying leads and sending follow-ups. A simple starting point is texting back missed calls. Confirm each job in the vendor's documentation, since capabilities differ.
Do you really need AI agents?
Not necessarily. If you rarely miss calls or texts and follow up on time by hand, an agent may add cost without much gain. If calls go unanswered while you work, start with one narrow job and measure the result.
What are the benefits of AI agents for small businesses?
They can cover routine messages and calls without adding staff. We don't have verified figures for labor savings or revenue gains, so judge the benefit against your own missed calls, response times and booked jobs.
How do you build AI agents for small businesses?
Pick one job, write the rule and the stop conditions, record customer consent, and test with a few phones before going live. Some CRMs let you edit the app itself. AttackDesk gives each company its own app code, plus API and MCP access, to add fields and automations.
Sources
- Twilio Pricing
- Twilio Conversational AI solutions pricing
- Twilio SMS Pricing in United States
- Twilio Help Center
- Twilio Help Center
- Federal Communications Commission
- Federal Communications Commission
- Federal Communications Commission
- Federal Communications Commission
Checked when this guide was written. Prices and rules change, so confirm on each page.
