Side-by-side comparison · Sales & Customer Support
Apollo.io vs Retell AI vs Zendesk
Everything that matters when choosing between them, in one place: our rating, what each can do, what they cost, and the trade-offs.
Comparing 3 tools, the maximum.
At a glance
Pick it if: Founders, small sales teams and marketers who need to find B2B contacts and email them.
Pick it if: Service businesses and agencies that want an AI receptionist or phone agent without hiring developers.
Pick it if: Established support teams, especially those handling phone, chat and email at volume across one or more brands.
Overview
| Attribute | Apollo.io | Retell AI | Zendesk |
|---|---|---|---|
| In one line | B2B contact database with emails and phone numbers, plus sequences to reach them. | AI phone agents that answer calls, book appointments and make outbound calls. | Helpdesk for support teams, with AI agents that answer customers and a copilot for staff. |
| Pricing model | Freemium | Paid | Paid |
| Starting price | $49/seat/mo | About $0.07–$0.31/min | $19/agent/mo |
| Free plan | Yes | No | No |
| Works with Claude Code | Yes | Yes | Yes |
Rating breakdown
Our scores out of 5. The higher bar in each row is highlighted.
| Attribute | Apollo.io | Retell AI | Zendesk |
|---|---|---|---|
| Overall rating | 4.0 | 4.1Winner | 3.6 |
| Ease of useHow quickly someone non-technical gets value from it. | 4.5 | 3.5 | 3.0 |
| FeaturesHow completely it covers its own job, and how well the pieces fit together. | 4.5 | 4.5 | 4.5 |
| Output qualityHow good the results are before you fix them. | 3.0 | 4.5 | 3.5 |
| Value for moneyWhat you get for the price, including the free plan. | 4.0 | 4.0 | 3.0 |
| Speed & reliabilityHow fast it is and how often it falls over. | 4.0 | 4.0 | 4.0 |
Feature comparison
A tick means it does this today. A dash means we haven't checked.
| Attribute | Apollo.io | Retell AI | Zendesk |
|---|---|---|---|
| Access & platform | |||
| Free plan | Yes | No | No |
| Mobile app | Yes | – | Yes |
| Desktop app | – | – | – |
| Browser extension | Yes | – | – |
| API access | Yes | Yes | Yes |
| Teams & business | |||
| Team workspace | Yes | Yes | Yes |
| Enterprise plan or SSO | Yes | Yes | Yes |
| Connects to other apps | Yes | Yes | Yes |
| Open source or self-hosted | No | No | No |
| AI abilities | |||
| Works with your files | – | Yes | Yes |
| Understands images | – | – | – |
| Makes images | No | No | No |
| Makes video | No | No | No |
| Writes code | – | – | No |
| Runs agents or automations | Yes | Yes | Yes |
| Learns your brand or style | – | – | – |
| Works in many languages | – | Yes | Yes |
| Capabilities score | 8/ 17 | 7/ 17 | 8/ 17 |
Pricing
Plans as listed on each vendor's site when we last checked. Confirm before you buy.
| Attribute | Apollo.io | Retell AI | Zendesk |
|---|---|---|---|
| Plans | Free Free Founders testing outbound. | Pay as you goOur pick About $0.07–$0.31/min Most small businesses and agencies. | Support Team $19/agent/mo billed yearly, or $25 monthly Small teams that only need email ticketing. |
Basic $49/seat/mo billed yearly Individual sellers doing regular outbound. | Enterprise Custom High call volumes and compliance needs. | Suite Team $55/agent/mo billed yearly, or $69 monthly Teams adding live chat, phone and AI agents. | |
ProfessionalOur pick $79/seat/mo billed yearly Full-time reps. | Suite ProfessionalOur pick $115/agent/mo billed yearly, or $149 monthly Growing support teams that need skills-based routing and better AI tools. | ||
Organization $119/seat/mo billed yearly (min 3 seats) Sales teams wanting advanced controls. | Suite Enterprise Custom Large or regulated support operations. | ||
| Which plan to pick | Start on Free to check the data covers your market. Basic suits one person prospecting; Professional is worth it if you also call prospects or want AI scoring. Monthly billing costs noticeably more than the yearly prices shown. | Start on pay as you go with the free credits, build one agent for your most common call and test it on your own phone. Talk to sales only once you run thousands of minutes a month. | Support Team only makes sense for email-only teams. Most businesses wanting AI and live chat should trial Suite Professional (the trial includes Copilot), then work out how many AI resolutions they will use, because extra resolutions at about $2 each can cost more than the seats. |
Key features
| Attribute | Apollo.io | Retell AI | Zendesk |
|---|---|---|---|
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Pros and cons
| Attribute | Apollo.io | Retell AI | Zendesk |
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Who each one is for
| Attribute | Apollo.io | Retell AI | Zendesk |
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Questions people ask
Which is better, Apollo.io, Retell AI or Zendesk?
Retell AI scores highest overall in our ratings (Apollo.io 4.0/5, Retell AI 4.1/5 and Zendesk 3.6/5). Apollo.io is best for finding business emails and phone numbers and Building B2B lead lists. Retell AI is best for AI receptionist for a small business and booking appointments by phone. Zendesk is best for ticketing for a team of support agents and Phone, chat and email support in one place.
Which is cheaper, Apollo.io, Retell AI or Zendesk?
Apollo.io: There's a free plan, and paid plans start at $49/seat/mo. Retell AI: There's no free plan. Paid plans start at About $0.07–$0.31/min. Zendesk: There's no free plan. Paid plans start at $19/agent/mo.
Which is easier to use, Apollo.io, Retell AI or Zendesk?
Apollo.io rates highest for ease of use in our scores. Founders, small sales teams and marketers who need to find B2B contacts and email them.
How we compare
Ratings are our own, from using each tool, across ease of use, features, output quality, value for money, speed & reliability.
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