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Calldock vs Vapi

Two fact sheets from our own research, side by side — pricing, platforms, API access and status re-checked by us rather than quoted from the vendors. Calldock starts at $49, Vapi at $0.05. Both ship a public API.

CalldockAI voice agent that phones new leads, qualifies them in conversation and books the meeting.VapiDeveloper platform for building and running voice phone agents, billed per minute of call time.

Side by side

FactCalldockVapi
CategoryAI SDRs & Sales AgentsVoice Agents & Phone AI
Pricing modelPaidPaid
Starts at$49 month$0.05 minute
Public APIYesYes
PlatformsWeb, APIWeb, API
CompanyCalldockVapi Inc.
Launched20252020
Last verifiedSep 6, 2026Sep 6, 2026

What our research says

Calldock

A packaged speed-to-lead caller rather than a voice platform: the agent, the calendar write-back, the SMS follow-up and the human handoff all come assembled, and API access starts on the cheapest plan instead of being an enterprise upsell. The pricing is honest about being metered but easy to misread — $49 buys roughly a hundred minutes of US calling, not a month of unlimited dialling. Vendor transparency is thin, with no company registration or country published.

Pros

  • Books appointments straight into a connected calendar during the call
  • Transfers to a human when the conversation needs one
  • SMS and email follow-up are part of the same workflow
  • API access, playground and code examples start on the $49 tier
  • Connects to Gmail, Slack, Google Calendar and Zapier out of the box

Cons

  • Monthly fee only buys a credit balance; talk time is charged on top
  • US calls at $0.22 a minute make long conversations expensive
  • No company registration, address or country is published
  • Non-US call rates are not stated on the pricing table

Vapi

The default answer when a developer needs a voice agent on a phone line rather than a chat widget: it handles the hard real-time parts — barge-in, latency, turn-taking, telephony — and lets you swap in your own models. Enterprise adoption at Ring and Intuit is real validation. Cost forecasting is the hard part, because the platform fee is only one of four meters running.

Pros

  • Handles real-time voice mechanics: turn-taking, interruptions, latency and telephony
  • Bring-your-own-key support across OpenAI, Anthropic and Google avoids double model markup
  • CRM and helpdesk integrations for Salesforce, HubSpot and Zendesk
  • SOC 2, HIPAA and PCI compliance plus SSO and RBAC on the enterprise tier
  • Proven at scale, with Amazon Ring routing inbound support volume through it

Cons

  • The $0.05/minute platform fee sits on top of speech, model and voice provider costs
  • Concurrency beyond ten lines costs $10 per line per month
  • Enterprise compliance features require an annual Scale contract
  • It is a developer platform, so there is no usable no-code path

Which one fits

Choose Calldock if you need

  • Sales teams that need inbound leads called back within minutes
  • Agencies running outbound qualification for several clients
  • Founders who want appointments booked without hiring an SDR

Choose Vapi if you need

  • Developers building phone-based support, booking or qualification agents
  • Replacing IVR trees with something that actually listens
  • Teams that want to bring their own model and voice provider keys

More comparisons

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