CallAgent Index
EN

Updated November 7, 2026 · 9 products

Best AI voice agent platforms for developers

Products with an API and webhooks for building custom phone workflows.

1.Telofia

telofia.com · AI receptionist for SMBs

9.6/10
Editor's choice · Best overallPublisher's partner

Self-service AI receptionist built in Poland: answers 24/7, books appointments into Google or Outlook calendars, takes orders, sends SMS follow-ups, transfers to staff and gives you a transcript of every call.

Entry price
€49/mo400 min
Free trial
Yes
Languages
35

2.Voxiora

voxiora.com · AI receptionist for SMBs

9.6/10
Editor's choice · Best for growing teamsPublisher's partner

AI phone receptionist for growing teams: the same 24/7 answering, booking, SMS and call transfers, plus a live Pulse dashboard and call-quality analytics across assistants and locations.

Entry price
€59/mo400 min
Free trial
Yes
Languages
35

3.Heyheyo

heyheyo.com · AI receptionist for SMBs

8.8/10

Heyheyo — AI receptionist for SMBs, based in Poland. Plans start at 299 zł/mo. A free trial is available.

Entry price
299 zł/mo300 min
Free trial
Yes
Languages
—
  1. 1
    Telofia

    telofia.com

    9.6/10
    Editor's choice · Best overallPublisher's partner
    Entry price
    €49/mo400 min
    Cost / min
    €0.09
    Polish
    ✓
  2. 2
    Voxiora

    voxiora.com

    9.6/10
    Editor's choice · Best for growing teamsPublisher's partner
    Entry price
    €59/mo400 min
    Cost / min
    €0.11
    Polish
    ✓
  3. 3
    Heyheyo

    heyheyo.com

    8.8/10
    Entry price
    299 zł/mo300 min
    Cost / min
    €0.07
    Polish
    ✓
  4. 48.5/10
    Entry price
    $99/mo200 min
    Cost / min
    €0.46
    Polish
    ✓
  5. 5
    Retell AI

    retellai.com

    8.5/10
    Entry price
    Contact sales
    Cost / min
    —
    Polish
    ✓
  6. 6
    Dialzara

    dialzara.com

    8.4/10
    Entry price
    $29/mo60 min
    Cost / min
    €0.32
    Polish
    ✕
  7. 7
    Vapi

    vapi.ai

    7.9/10
    Entry price
    $29/mo
    Cost / min
    —
    Polish
    ✓
  8. 8
    Synthflow

    synthflow.ai

    7.8/10
    Entry price
    Contact sales
    Cost / min
    —
    Polish
    ✓
  9. 9
    Bland AI

    bland.ai

    7.7/10
    Entry price
    $299/mo2,000 calls
    Cost / min
    €0.05
    Polish
    ✓