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Comparison table

FeaturesRevoxBland AIVapiRetell AIElevenLabs
Voice automation
Outbound at scale
Human-like call experience
Sub-second latency
Warm transfer✓ (BYOT or enterprise)
Full IVR navigationIVR/queue config✓ (Navigate IVR)
Call retry on voicemail orchestration
Call time boxing (calling windows)
Retry & timezone-aware logic
Structured data extraction (webhook)Webhooks / post-call✓ (structured outputs)Post-call analysisAPI (batch/call reports)
Bulk campaigns (CSV upload)✓ (batch calls)✓ (batch calling)
Developer experience
API-first
Single HTTP request to place call
Recording & transcription included✓ (recording API; standard transcription)Pass-through cost
Pricing
Base price$0.15/min$0.11–0.14/min (plan-based)$0.05/min + LLM/TTS/STT$0.07/min~$0.08–0.10/min (tiered)
Phone numberVariableBYOT or Bland; transfer fees apply$2/mo$2/moTwilio or SIP
Setup fees / subscriptionsNoneFree plan; Build $299, Scale $499NoneNoneTiered ($5–$1,320/mo)
Free credits$15Free plan (100 calls/day)$1060 min trial15 min (free tier)