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AI has changed phone systems forever.
Businesses are done wasting time on missed calls and messy notes. Today, the smartest phone systems answer for you, take notes, and give you clean summaries in seconds. That is the future. And it is already here.
We tested 15 of the top phone systems. Only a handful truly use AI in a way that saves real hours each week. We tried everything. From support calls to sales calls. We made the AI take notes. We pushed it to answer customers. We checked every summary for accuracy.
You are about to see the best AI phone systems that actually deliver.
Clear picks. Real results. No hype.
What’s an AI Phone System?
An AI phone system is still a phone system: you make calls, you receive calls.
Nothing new there.
The difference is what happens around the call:
- AI takes notes.
- It understands intent.
- It sends summaries to your CRM.
- It answers common questions.
- It even tells you who to follow up with and why.
You stop writing things down. You stop guessing what a customer said last week. You stop losing time on calls that lead nowhere.
It looks like a small upgrade. In reality, it changes how your team works every day.
AI reshuffled the entire VoIP industry. Some legacy phone systems adapted fast and now feel brand new. Some fresh players came out of nowhere with bold ideas. And a few older names like Grasshopper or Ooma stayed behind, stuck in the past.
Let’s look at the ones that actually moved forward.
Allo - Best for SMBs
Allo is one of the newer phone systems that emerged with AI.
Positioned as a mobile-friendly phone system designed for small businesses and sales teams, it’s packed with AI features.
Among other AI features, Allo provides an AI answering service, AI call transcripts and summaries, an AI IVR that understands what your callers say, and an AI assistant that uses your calls and texts as a knowledge base.
What we like about Allo
- Its affordable pricing: there’s no license minimum, and their cheapest plan starts at $25/month/user (or $18 if paid yearly). It makes Allo an ideal option for small businesses.
- Its native integrations: Allo features native integrations with top CRMs (HubSpot, Salesforce, Attio…) and Zapier and Make integrations to connect the phone system to more than 1,800 business tools.
- Its international support: while most phone systems focus on the US and the English language, Allo can be used in more than 20 countries and understands English, French, and Spanish.
Where Allo could improve
- Multi-channel support: currently, Allo doesn’t offer meetings or support for instant messaging tools like WhatsApp or Instagram.
- Admin control: Allo lacks granularity when it comes to managing users’ rights and permissions in the tool.
Demo of Allo
Quo - Best for Teams Working Across Borders
Quo is a recent phone system provider. Formerly known as OpenPhone, it was founded in 2018. Like Allo, it focuses primarily on voice and text.
On the AI side, Quo offers an AI answering service called Sona, along with call transcriptions and AI-generated summaries to help teams stay on top of conversations efficiently.
What we like about Quo
- Affordable pricing: Quo’s plans start at $19 per user per month.
- International features: supports international calling and messaging, and AI features work in 34 languages.
- Responsive support team: customers praise the quick and friendly assistance.
- Nice UI: The product has a clean and easy-to-use interface.
Where Quo could improve
- AI receptionist pricing: their AI answering service requires an add-on and is billed per call, which can add up quickly.
- Product maturity: Quo is newer and less established than long-standing competitors, which may affect reliability for large organizations.
Demo of Quo
Aircall - Best for Large Sales Teams
Aircall is a well-established cloud phone system founded in 2014. It is built for sales and support teams, with deep integrations into CRMs and help desks that help streamline daily workflows. Its product maturity makes it a trusted choice for companies scaling their outbound efforts.
Its AI features are designed specifically for revenue teams. Aircall includes real-time transcription, AI-generated summaries, sentiment analysis, and call scoring, which allows managers to review performance more efficiently and coach reps based on data rather than guesswork.
What we like about Aircall
- Strong CRM integrations: especially with Salesforce, HubSpot, Zendesk, and other core sales tools.
- Wide geo coverage: Aircall provides local numbers in 38 countries.
- Reliable infrastructure: Their team has built a proprietary calling network for better quality and uptime.
Where Aircall could improve
- Pricing: AI features are billed as an add-on ($9/user/month), and there is a 3-license minimum, which means at least $147 per month to access AI.
- Billing practices: online Aircall reviews frequently mention auto-renewals and difficult cancellation experiences.
Demo of Aircall
RingCentral - Best for Unified Communications
RingCentral is one of the most recognizable names in business communications. Founded in 1999, it is a fully unified communications platform that combines voice, video meetings, and messaging in one system.
Unlike phone-only providers like Aircall, RingCentral also supports customer conversations on channels like WhatsApp and Instagram.
On the AI side, RingCentral includes an AI assistant that provides transcriptions, summaries, and live captions during calls and meetings. It also offers an optional AI Receptionist add-on that can handle inbound calls.
What we like about RingCentral
- Mature and reliable product: RingCentral is trusted by enterprises with complex needs.
- Strong UCaaS capabilities: The product offers easy management of multiple locations and phone lines.
- Extensive integrations: RC supports a wide range of third-party business tools.
- AI availability: their core AI features are included in all plans, even the base plan.
Where RingCentral could improve
- Calling coverage: unlimited calling is limited to the US and Canada
- Cancellation experience: many customers report difficulties when attempting to end service.
- AI Receptionist pricing: their AI phone answering service requires a separate add-on and costs around $59 per month.
Demo of RingCentral
CloudTalk - Best for High-Volume Sales Calling
CloudTalk is a UCaaS platform designed for teams that rely heavily on prospecting activities. It supports voice, SMS, and WhatsApp, making it a strong fit for outbound sales and international calling workflows.
CloudTalk has invested significantly in AI features that help sales teams improve performance and gain deeper insights from customer conversations. Its AI tools include call transcripts and summaries, topic extraction, sentiment analysis, talk-to-listen ratio calculation, transcript search, and an AI Voice Agent that can manage both inbound and outbound calls.
What we like about CloudTalk
- Intuitive UI: CloudTalk is simple to use even for fast-moving sales organizations.
- Reliable calling experience: their phone system offers a solid infrastructure for global outreach.
- International flexibility: CloudTalk offers strong support for calling abroad.
Where CloudTalk could improve
- Entry-level plan limitations: the base plan is very limited in terms of features, which means you’ll likely have to upgrade.
- AI pricing: AI features are billed separately at $9 per user per month, which increases the total cost for teams adopting AI.
Demo of CloudTalk
Nextiva - Best for Large Teams
Nextiva is one of the most established UCaaS providers on the market. Founded in 2008, it combines voice, video meetings, team chat, SMS/MMS, and even light CRM and ticketing tools in a single platform, which makes it an all-in-one hub for companies that rely heavily on internal collaboration.
Its AI capabilities include real-time transcription, AI call summaries, emotion scoring, and a conversational IVR that understands natural language.
What we like about Nextiva
- True UCaaS platform: Nextiva supports phone, video, chat, SMS/MMS, WhatsApp, and Instagram messaging in one app.
- Team features: Nextiva offers a team chat and collaboration-focused workflows that keep customer conversations visible to teams.
- Reliability: the company has nearly two decades of experience. The product is mature and reliable.
Where Nextiva could improve
- US-only: Coverage is limited to the United States, so it is not ideal for international teams
- AI features available on higher plans only: most AI features require higher-tier plans, and advanced features like conversational IVR are only available on custom enterprise plans, which means it is best suited for larger organizations
Demo of Nextiva
Frequently Asked Questions About AI Phone Systems
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What are the best AI phone systems?
Allo and Quo are strong options for small businesses. They offer affordable pricing, intuitive setup, and AI-driven features that help automate call handling, voicemail transcriptions, and customer routing without requiring a dedicated IT team.
For more established sales organizations, CloutTalk and Aircall can be excellent choices. Their advanced AI analytics, call scoring, and real-time coaching recommendations are designed to help sales teams improve performance and boost conversion rates.
What are the top features to look for in an AI phone system?
We recommend prioritizing the features that will have the greatest impact on your team’s productivity. As a starting point, call transcripts and summaries are typically the most valuable: they eliminate the need to listen back to recordings or rely on incomplete notes, saving your team hours every week.
An AI answering service can also provide significant benefits by handling incoming calls, filtering inquiries, and routing the most promising prospects to the right person in real time.
Finally, advanced AI coaching tools can help sales and support teams improve their performance through insights on communication, customer sentiment, and best practices.
