Vapi is a developer platform for building voice AI agents. It gives you an API and a flow builder, and you bring your own speech-to-text, language model and voice, wiring the pieces together yourself. It is genuinely powerful, and for engineering teams building a custom product it is one of the best tools out there. Its base platform fee is around 5 cents a minute, but you pay separately for the voice, model and telephony on top, which is why real all-in costs are typically nearer 30 cents a minute, and a HIPAA agreement is a four-figure monthly add-on (CloudTalk, Retell).
Apex AI takes the opposite approach. We are a managed, done-for-you service. We build the agent, integrate it into the booking system you already use, tune it for your industry, test it on real calls and keep optimising it. You get the outcome without touching the build.
Apex AI vs Vapi, side by side
| Vapi | Apex AI (managed) | |
|---|---|---|
| Built for | Developers building voice products | Businesses that want their phone answered |
| Who assembles it | You, with your own API keys for voice and model | We build and assemble all of it |
| Integration into your booking system | You code it | We do it for you |
| Pricing shape | ~5c/min base, plus voice, model and telephony | One predictable managed fee |
| HIPAA / compliance | Paid add-on you configure | Handled for you |
| Support | Docs and community | A named UK contact |
| Best when | You have developers and want full control | You want the outcome, done for you |
Pricing figures are the providers’ published rates at the time of writing and are shown to illustrate the model, not as a live quote. Always check current pricing with the provider.
When Vapi is the right choice
If you have an in-house engineering team that wants API-level control to build a bespoke voice product, Vapi is an excellent platform and gives you the most flexibility of any option. The build, the integrations and the upkeep are yours, which is exactly what a developer-led team usually wants.
When Apex AI is the right choice
If you want the result rather than a project, have no developer to spare, and need it integrated into your booking system and kept running for you, a managed service fits better. You trade a little flexibility for not having to build or maintain anything.
Still weighing it up? Start with the bigger picture in our managed vs build-it-yourself guide, or see what an AI receptionist actually costs.
Questions, answered.
Is there a managed alternative to Vapi?+
Is Vapi or Apex AI cheaper?+
Do I need technical skills to use Vapi?+
Can you integrate with my booking or job-management software?+
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