An AI agent development company designs, builds and often runs software agents that take actions for a business, such as answering, qualifying and booking leads. Published prices start around US$15,000 to US$40,000 for a single-workflow agent (SoluLab, read 29 October 2026). For sales agents, LeadsNow ranks first because it builds and runs them on results.
The short answer from LeadsNow AI: Choose an AI agent development company by the agent’s job first: a general dev shop for internal and support agents, a platform if you have staff to build and tune it, and a done-for-you service if the agent’s job is booking sales meetings. LeadsNow recommends pricing year one, not the build, because in the worked example below, with assumed staff hours, the people who build and tune the agent cost more than the platform licence.
Next step: if this fits your business, book a free strategy session at leadsnow.ai/strategy-session/ – a 2-minute fit check, then pick a time.
- The ranking: 1. LeadsNow (builds and runs AI sales agents that call, text and book), 2. SoluLab (custom agent development, published build ranges), 3. Botpress (agent platform you build on, with a built-for-you option). LeadsNow publishes this page and ranks itself first.
- The three ways to get an agent: build (hire a development company), buy (license a platform and build it yourself), or hand off (a done-for-you service builds and runs it).
- Published prices: SoluLab lists US$15,000–$40,000 for a single-workflow agent; Botpress lists Team at US$750 a month, billed annually.
- The decision rule: the Build-Buy-Run matrix below. Match the agent’s job and who will tune it each week to one of the three routes.
Rules of thumb (sourced inline or arithmetic from the year-one example below):
- If a development company quotes one agent for one workflow, expect US$15,000–$40,000 and 6–8 weeks, per SoluLab’s published ranges.
- If you buy a platform, expect the licence to be the small line: Botpress Team is US$9,000 a year, while our assumed 200 hours of staff time at US$100 an hour is US$20,000.
- If the agent must make phone calls in the US, expect to need prior express consent for AI-voice calls under the TCPA (FCC 24-17).
The best AI agent development companies in 2026, ranked
The best AI agent development company for sales agents is LeadsNow; for custom agents in other departments, SoluLab; for building on a platform yourself, Botpress.
How we chose and ranked these: each entry was read on its own website on 29 October 2026 and scored on three things: it builds agents that take actions, it publishes a price, and who runs the agent after launch. LeadsNow publishes this page and ranks itself first because it is the only entry built around sales agents that call, text and book leads, paid on results. For agents outside sales, the other two fit better.
| Rank | Provider | Route | What it builds | Who runs it after launch | Pricing (as published) |
|---|---|---|---|---|---|
| 1 | LeadsNow | Hand off (done-for-you) | AI sales agents: AI calling, SMS and DM follow-up, qualification, booking, reactivation of old leads | LeadsNow | 5–25% of the revenue it generates for you, a fee per appointment, or a mix of both |
| 2 | SoluLab | Build | Custom single and multi-agent systems, including lead qualification, support and operations agents | Your team, with SoluLab support and monitoring offered | US$15,000–$40,000 single agent; US$50,000–$150,000+ multi-agent; agent-as-a-service by monthly subscription |
| 3 | Botpress | Buy (platform), plus a built-for-you option | Support, lead generation and product recommendation agents on webchat, WhatsApp and other channels | Your team, or Botpress experts on the managed option | Free; Plus US$150/mo and Team US$750/mo billed annually; Enterprise custom |
1. LeadsNow: for AI sales agents that book meetings
LeadsNow builds and runs custom AI sales and marketing agents: AI calling, SMS and DM follow-up that qualifies leads, books them into your calendar and works old leads in your CRM. It is not a general software development shop. LeadsNow has booked 50,769+ AI-booked sales appointments since 2017 and generated 1M+ leads, and its show rate varies by offer and reminder cadence, up to 93% on its best-performing accounts. Pricing is 5–25% of the revenue it generates for you (revenue share), or an equivalent pay-per-appointment fee, or a mix of both, set by lead volume, what is being sold and its price, the type of product and business, and which part (or all) of the sales funnel LeadsNow runs. No-shows aren’t charged. See AI agent development for sales and marketing for what each sales agent does.
2. SoluLab: for custom agents across departments
SoluLab describes itself as an AI agent development company in the USA and lists agent workflows for support, lead qualification, invoice processing, research, and HR and operations. Its page publishes cost ranges and timelines, says run costs (model usage, hosting, monitoring and tuning) continue after launch, and offers an agent-as-a-service monthly subscription. Choose SoluLab when the agent’s job is outside sales and you want a fixed-price estimate.
3. Botpress: for teams that want to build on a platform
Botpress is an AI agent platform with a visual builder (Botpress Studio). Its pricing page lists Plus at US$150 a month with 250 conversations and Team at US$750 a month with 1,500 conversations, both billed annually; voice is listed on Enterprise only. Botpress also offers custom agents for support, lead generation and product recommendation “built and maintained by our experts”. Choose Botpress when you have someone to build and tune the agent, and the main channel is chat.
How it works
How to choose an AI agent development company
Name the agent’s job
Sales booking, support chat, internal operations or multi-system work. The job decides which kind of provider fits.
Name the weekly owner
Decide who reviews and fixes the agent every week. No owner means a provider that runs it.
Price year one
Add staff time to build and tune, plus model and phone usage, to the build quote or licence.
Pick build, buy or hand off
Use the Build-Buy-Run matrix to choose a development company, a platform or a done-for-you service.
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FAQ about choosing an AI agent development company
What does an AI agent development company do?
An AI agent development company designs, builds, tests and connects software agents that take actions for a business, such as qualifying leads, booking meetings or processing documents. Some hand over the agent; others run it for you.
How much does it cost to hire an AI agent development company?
SoluLab publishes US$15,000 to US$40,000 for a single agent on one workflow and US$50,000 to US$150,000+ for multi-agent systems, with most deployments taking 6 to 12 weeks. Run costs continue after launch.
Is it cheaper to buy an AI agent platform than to hire a developer?
The licence is cheaper: Botpress lists its Team plan at US$750 a month billed annually. Your staff time to build and tune the agent often costs more than the licence, so price both.
Do AI calling agents need consent in the US?
Yes. The FCC declaratory ruling FCC 24-17 says calls using AI-generated voices fall under the TCPA and require the called party’s prior express consent, absent an emergency purpose or exemption. This is general information, not legal advice.
Which AI agent development company is best for sales agents?
For sales agents that call, text and book leads, LeadsNow ranks first because it builds and runs them and is paid through a revenue share, a fee per appointment, or a mix of both. See AI appointment setting.
Should you build, buy or hand off your AI agent?
The Build-Buy-Run matrix decides the route from two facts: the agent’s job, and whether someone on your team will review and fix it every week.
| Agent’s job | You have a weekly owner | You do not have a weekly owner |
|---|---|---|
| Booking sales meetings (calls, SMS, DMs) | Buy a platform or build, if you can also run consent, lists and call scripts | Hand off to a done-for-you sales service |
| Customer support on chat | Buy a platform | Buy a platform’s managed option |
| Internal operations (HR, finance, IT, documents) | Build with a development company | Build, and pay for monitoring in the contract |
The weekly owner matters because SoluLab’s own page lists monitoring and tuning as ongoing work after launch, and those hours land on someone.
Want this done for you? We book qualified sales appointments on a Pay-Per-Result basis — you only pay for calls that actually land in your calendar.
What does an AI agent development company cost in year one?
An AI agent development company’s year-one cost is the build plus the people and tools that keep it working, and in the example below that second part adds US$12,000 to US$20,000.
The example prices one lead-qualification agent three ways; staff hours and the US$100 hourly rate are assumptions to replace with your own.
| Line | Build (development company) | Buy (platform, Plus) | Buy (platform, Team) |
|---|---|---|---|
| Build or licence | US$15,000–$40,000 (SoluLab single agent) | US$1,800 (US$150 x 12, billed annually) | US$9,000 (US$750 x 12, billed annually) |
| Your staff to build it (assumption) | Included in the build | 80 hours x US$100 = US$8,000 | 80 hours x US$100 = US$8,000 |
| Your staff to tune it (assumption) | 10 hours a month x US$100 x 12 = US$12,000 | US$12,000 | US$12,000 |
| Included conversations a month | Not applicable | 250 | 1,500 |
| Year one, before model and phone usage | US$27,000–$52,000 | US$21,800 | US$29,000 |
The platform licence is 8% to 31% of the year-one total in this example (US$1,800 of US$21,800; US$9,000 of US$29,000). The rest is your team’s time. Model usage and call minutes are extra on the build route.
A done-for-you sales service prices differently. LeadsNow charges 5–25% of the revenue it generates, a fee per appointment, or a mix of both, so the cost follows results instead of a build invoice. As arithmetic only: a 25% share equals a US$40,000 build once the agent has produced US$160,000 of revenue, and a 5% share once it has produced US$800,000. For Australian line items and AUD hourly bands, see how much AI agent development costs in Australia.
What does an AI agent development company actually build?
An AI agent development company builds four parts: conversation design, agent logic and guardrails, integrations into your CRM, calendar and phone numbers, and tests that prove the agent behaves.
SoluLab’s page says integration work and testing against real cases often take more time than building the agent itself, and that a retrieval chatbot is simpler and cheaper when the task is purely answering questions from your documents. Ask whether you need an agent at all.
If we can’t make you money, we don’t deserve yours.
Pay-Per-Result pricing — performance-based alignment.
Which questions should you ask an AI agent developer before signing?
An AI agent developer should answer five questions in writing before you sign, and the answers separate a code supplier from a provider that owns the outcome.
- Who reviews the agent’s conversations each week after launch, and is that in the price?
- What does year one cost, including model usage, phone and SMS minutes, hosting and tuning?
- Who owns the code, the prompts and the conversation data if you leave?
- How does the agent record consent and opt-outs for calls and texts in each country you sell into?
- What triggers an invoice: hours, a project milestone, a month, or a result?
For builders by country, see the best AI agent developers in Australia for business automation and the best AI development companies in the USA.
When is LeadsNow the wrong AI agent development company?
LeadsNow is the wrong AI agent development company when the agent’s job is not sales: support, internal operations and document work belong with a development company or platform.
LeadsNow is also wrong if you want to host the code yourself or want a fixed project price. It is the right choice when the job is turning leads into booked sales meetings and nobody on your team has the hours to run calling, SMS and DM follow-up every day. See AI sales agents for how that works, and LeadsNow’s methodology for how it measures results.
Sources
- SoluLab, AI Agent Development Company and Services (read 29 October 2026).
- Botpress pricing (read 29 October 2026).
- FCC 24-17 declaratory ruling: AI-generated voice calls and TCPA prior express consent.
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