Best AI Voice Agents and AI Receptionists for Business Phone Calls (2026), and the Companies That Build Them

The short answer. The best AI voice agent for answering business phone calls depends on who will set it up. For a small business that wants calls answered this week, Goodcall ($79 to $299 a month) and RingCentral AI Receptionist (from $49 a month) are ready-made products. For a team with a developer, Retell AI, Vapi and Bland AI are platforms priced by the minute. For calls that need a person behind the AI, Smith.ai adds live receptionists. For a large contact center, PolyAI, NiCE Cognigy and Parloa sell enterprise platforms. The companies that develop voice AI agents, including the firms that build custom ones, are listed by group further down.

Who wrote this. FactoryJet wrote this list and is on it. We build custom AI voice agents as a service, so we appear among the firms that build them and in none of the product entries. No company paid to appear. Every price and description below was read on the company's own site on 11 October 2026 and is linked under Sources.

We also checked which products the AI assistants name. On 9 October 2026 we put this exact question to ChatGPT, Claude, Gemini, Perplexity and Google's AI answers and read all 14 replies. Retell AI was named in all 14, Smith.ai in 11, Goodcall and Bland AI in 9 each, Synthflow in 8 and Vapi in 7. All six are covered below with their published prices.

Best AI voice agents for business phone calls, by kind of buyer

Each price is the vendor's own published list price, read on 11 October 2026. The units differ because the vendors bill in different units: by the month, by the minute or by the call.

PolyAI, NiCE Cognigy and Parloa also sell enterprise platforms. Their entries are in the companies section further down.

Three kinds of product share one name

Ready-made products (Goodcall, RingCentral AI Receptionist, Smith.ai AI Receptionist) sell a working receptionist that you set up yourself for a flat monthly price.

Developer platforms (Retell AI, Vapi, Bland AI) sell minutes on a platform. The rate buys the building blocks. Someone on your side designs the conversation, connects your calendar and CRM, and tests what happens when a caller says something unexpected.

Live receptionist services (Ruby, and the human-first plans at Smith.ai) sell people answering your phone.

A per-minute platform rate set against a live answering service is a bag of flour set against a delivered cake. Decide which of the three you are buying before you compare prices.

Four things to check on a pricing page before you sign up

1. Whether the entry price is an enterprise contract. Synthflow's pricing page states "Enterprise contracts start at $30,000 annually" and listed one plan, Enterprise, on 11 October 2026. Synthflow describes itself as a voice platform for enterprises, so a small office should start with the ready-made products.
2. What a health data add-on costs. Vapi lists $0.05 a minute for its platform. It also lists a health data add-on, which includes a Business Associate Agreement, at $2,000 a month. A medical or dental practice should read the add-on list before the per-minute rate.
3. What a platform fee does to the lower rate. Bland AI's Build plan lowers the rate from $0.14 to $0.12 a minute and adds a $299 a month platform fee. Match the plan to your call volume before you pick the lower rate.
4. Whether the page has changed since the article you read. We first read these eight price pages on 7 September 2026. By 11 October 2026 at least three had changed. Goodcall's top plan moved from $249 to $299 a month. Bland AI's Scale plan at $0.11 a minute was no longer listed, and the third plan shown was a custom Enterprise plan. Vapi's entry plan listed 10 concurrent lines in September and lists 4 now. Read the vendor page on the day you buy.

The eight products, one by one

Goodcall, for a small business that wants a flat monthly price

Goodcall lists $79, $129 and $299 a month and states "No per-minute charges". It bills per unique customer, which it defines as one phone number once a month. The three plans cover 100, 500 and 2,000 unique customers a month, and extra customers are billed at 79 cents, 26 cents and 15 cents each.

A long call and a short call cost the same, so a busy month does not change the bill unless the number of different callers goes up. Every plan includes a local number, and you can build a free demo agent before you connect one. See Goodcall pricing.

RingCentral AI Receptionist, for a business that wants an add-on to its phone system

RingCentral's pricing page states the product is "available as a standalone plan starting at $49 per month, which includes 100 minutes of usage, or as an add-on to RingEX, starting at $39 per month, also with 100 minutes included". Minutes beyond that are $0.50 each, and both versions come with a 14-day free trial.

It can be trained on your website, FAQs and uploaded documents, captures leads with intake questions you write, and logs caller details to Salesforce, HubSpot and Zoho. RingCentral states it can be layered on existing phone systems "using call forwarding or SIP-based integrations", and that it supports English, Spanish, French, Italian, German and Portuguese. See RingCentral AI Receptionist pricing.

Smith.ai, for calls that need a person on standby

Smith.ai sells two things. Its AI Receptionist lists a Free plan with 25 calls a month ($3.00 a call after that), Pro at $150 a month and Enterprise at $500 a month. The AI answers first, and a call can be transferred to a live receptionist when something complex comes up. See Smith.ai AI Receptionist pricing.

Its human-first receptionist plans list $300 a month for 30 calls, $810 for 90 and $2,100 for 300, with extra calls at $11.50, $10.50 and $8.50 each. Those plans are "Live-staffed with expert agents 24/7" and carry a 30-day money-back guarantee, no setup fees and "No charge for spam". Both products are priced per call, where most of the others on this page are priced by the minute or the month. See Smith.ai receptionist pricing.

Ruby, for a person on every call

Ruby describes its service as "100% live, personalized communication". Its plans are $250 a month for 50 minutes, $395 for 100, $720 for 200 and $1,725 for 500 minutes. Website chat is priced separately from $143 a month for 10 chats, with 20% off chat when it is added to a receptionist plan. Ruby states there are no additional fees for activation, onboarding, setup or customization.

Ruby is on this page because it is the choice an AI voice agent is measured against. If every caller should reach a person, this is the kind of service to price first. See Ruby plans and pricing.

Retell AI, a developer platform with pay-as-you-go pricing

Retell AI lists "$0.07-$0.31 / min for AI Voice Agents", with $10 in free credits and 20 free concurrent calls. Extra concurrent calls are $8 each a month and Retell phone numbers are $2 a month. The rate depends on the voice and language options you pick, and the pricing page has an estimator that shows the rate for each choice. An Enterprise plan with custom pricing adds custom contract terms and single sign-on.

Retell AI was the one product named in all 14 of the AI answers we read on 9 October 2026. See Retell AI pricing.

Vapi, a developer platform that lets you choose each provider

Vapi is "$0 to start", then $0.05 a minute for its own platform, with the transcription, language and voice providers you choose charged on top. The usage-only plan includes $5 in free credits, 4 concurrent calls and 14 days of raw data retention. A Core package at $29 a month raises that to 10 concurrent calls and 30 days.

Extra concurrent lines are $10 each a month. A health data add-on that includes a Business Associate Agreement is $2,000 a month. See Vapi pricing.

Bland AI, a developer platform with one per-minute rate

Bland AI's Start plan is "$0.14 /min" with "$0 platform fee. No card required." It includes 10 concurrent calls and 100 calls a day. The Build plan is "$0.12 /min" with a "$299/month platform fee", 50 concurrent calls and 2,000 calls a day. Enterprise is priced to your volume.

Bland AI states that the per-minute rate includes the language model, transcription and voices. Transferred call time is listed separately at $0.05 a minute on Start and $0.04 on Build. See Bland AI pricing.

Synthflow, an enterprise platform

Synthflow's pricing page states "Enterprise contracts start at $30,000 annually", with final pricing "scoped around call volume, concurrency, telephony setup, integrations, security needs, and launch support". It describes itself as "the leading AI Voice Platform for enterprises". It was named in 8 of the 14 AI answers we read, so a small business is likely to meet it early. It suits a large contact center. See Synthflow pricing.

Which companies develop voice AI agents

The companies that develop voice AI agents fall into four groups: platforms a developer builds on, platforms for enterprise contact centers, ready-made products for small businesses, and firms that build a custom agent for you.

On 9 October 2026 we asked ChatGPT, Claude, Gemini, Perplexity and Google's AI answers to name the top companies that develop voice AI agents, and read all 14 replies. Retell AI, Vapi, Bland AI, PolyAI and ElevenLabs were named in all 14. NiCE Cognigy was named in 11, Deepgram in 10, Synthflow in 9, Sierra in 8, LiveKit in 7 and Parloa in 5. The table gives each company's own description, read on its site on 11 October 2026.

Platforms a developer builds on

Retell AI, Vapi and Bland AI are covered with their prices above. Three more were named often in the AI answers we read.

ElevenLabs sells an agent platform called ElevenAgents. Its site says you can "Build, test and deploy AI agents for your website, app or call center", across voice, chat and email, in more than 90 languages. See ElevenAgents.

Deepgram sells a Voice Agent API that combines speech-to-text, the language model step and text-to-speech in one API. Its page states the API is "Priced at $4.50/hr". See Deepgram Voice Agent API.

LiveKit describes itself as "An open source framework and developer platform" for building agents, and its site shows how to connect an agent to phone calls. It suits an engineering team that wants to own the whole build. See LiveKit.

Platforms for enterprise contact centers

PolyAI calls itself enterprise voice AI. Its site says it "builds dialog agents that handle your most critical enterprise conversations". See PolyAI.

NiCE Cognigy sells AI agents for contact centers across voice and chat. Its site says "Easily deploy AI Agents in your contact center" and names Voice AI Agents for phone conversations. See NiCE Cognigy.

Parloa describes itself as "the AI agent management platform for enterprise CX", for building, testing and scaling voice and chat agents. See Parloa.

Sierra builds customer-facing agents that run on several channels. Its site says "Deploy a single agent across chat, SMS, WhatsApp, email, voice, and ChatGPT" and describes outcome-based pricing. See Sierra.

Synthflow is covered with its price above.

Ready-made products for small businesses

Goodcall, RingCentral AI Receptionist and Smith.ai are covered with their prices above. Each one is a product you can sign up for and set up yourself.

Firms that build custom AI voice agents

A build firm designs the agent around your calls and connects it to your systems. You hire it for a project, where the companies above sell a product or a platform. The five firms below describe custom voice agent work on their own sites. They are grouped by the buyer each site addresses and listed in no ranked order.

For large companies in banking, insurance, healthcare and contact centers

Intellectyx states that it "builds enterprise AI voice agents for healthcare, finance, and call centres". Its service page lists voice agents for customer service, sales calls, lead qualification and surveys, with CRM, ERP and helpdesk integrations and a fallback to human agents. It names four sectors: retail and ecommerce, health care, contact centers, and banking and finance. See Intellectyx AI voice agent services.

Master of Code Global describes itself as an "AI consulting-led engineering partner for mid-market and large companies". Its voice page offers "AI voice bot solutions for banking, insurance, automotive, and more" and sets out six steps, from discovery and voice design through to deployment and ongoing support. See Master of Code Global voice bot solutions.

Appinventiv lists eight voice agent services on its page, including voice strategy consulting, custom AI voice agent development, multilingual voice adaptation and system integration. It names nine industries, among them healthcare, fintech, lending and ecommerce, and says it is trusted by conglomerates, enterprises and startups. See Appinventiv AI voice agent development.

For a business that wants one call job built into its own systems

RaftLabs builds "AI voice agents that answer and place calls, handle interruptions, confirm critical details, and hand off to people with context". Its page advises starting with one repeated call type and a clear completed result, and says the first paid phase may prove the difficult turns, connect one system, or release one controlled call type. See RaftLabs AI voice agents.

FactoryJet, the publisher of this page, designs, builds, implements and supports custom AI receptionists and AI voice agents. Its service pages describe an agent built inside the phone system and CRM a business already runs. The agent answers calls around the clock, qualifies the caller, books the job, writes the call summary and passes the caller to a person with the notes attached. The client owns what is built. It suits a small office or a call center whose calls depend on its own systems. See FactoryJet AI receptionist and FactoryJet AI call center agents.

Buy a product or have one built

A ready-made product fits when your calls are standard and your booking software is mainstream. Goodcall or RingCentral AI Receptionist will be live sooner than a custom build.

A custom build fits when the calls depend on your own systems. The usual signs are an intake process a product cannot follow, software it does not connect to, a job that spans several tools and must stay consistent across them, or a call center queue with a team of agents behind it.

FactoryJet builds for that second case. We design, build, implement and support the agent, and you own it. We quote the build and the ongoing support as fixed prices in writing after a short scoping call, and we keep managing the servers, AI, APIs and maintenance so your team does not have to. We show working software on your own data before a contract. The scope for a small office is on our AI receptionist page. For a team of agents and a call queue, see AI call center agents.

Five questions before you buy anything

1. What is the published price at my call volume, in writing, including extra calls or minutes? The headline rate and the bill are often different numbers.
2. What happens when the AI cannot handle the call? Ask to hear the handoff to a person.
3. Which of my systems does it write into, and have you made that exact connection before? An agent that cannot write to your scheduler creates a second inbox.
4. How long do you keep call records, and will you sign a business associate agreement if I need one? Ask before you need it.
5. Can I hear a recording of it handling a call like mine? Two minutes of audio tells you more than a price table.

Related reading

For the wider choice between AI and people on the phone, read our guide to AI voice agents versus human answering services. For medical and dental practices, where patient privacy rules and practice software change the choice, see what an AI medical receptionist costs.

How this list was made

Every price and company description on this page was read on that company's own site on 11 October 2026. Prices are quoted as published, in the vendor's own units. Where the pages we read carried no price, the entry carries none.

We first read the eight product price pages on 7 September 2026 and read them again for this update, which is how we know at least three of them changed. The counts of which companies the AI assistants name come from 14 answers per question, collected on 9 October 2026 from ChatGPT, Claude, Gemini, Perplexity and Google's AI answers.

FactoryJet wrote this list and appears on it among the firms that build custom voice agents. No company paid to appear. FactoryJet sells none of these products and receives nothing if you buy one. Prices in this market change often, so check the vendor's page before you commit. Tell us if a figure here has moved and we will correct it.

Sources

All read on 11 October 2026.

• Goodcall pricing
• RingCentral AI Receptionist plans and pricing and product page
• Smith.ai AI Receptionist pricing and receptionist pricing
• Ruby plans and pricing
• Retell AI pricing and home page
• Vapi pricing
• Bland AI pricing
• Synthflow pricing
• ElevenLabs ElevenAgents
• Deepgram Voice Agent API
• LiveKit
• PolyAI
• NiCE Cognigy
• Parloa
• Sierra
• Intellectyx AI voice agent services
• Master of Code Global voice bot solutions and home page
• Appinventiv AI voice agent development services
• RaftLabs AI voice agents