CHECKED OCT 10, 2026

Compare realtime APIs

Pick up to four APIs from any category and see them side by side.

Cloudflare Realtime (SFU, TURN, RealtimeKit, Realtime Agents / voice)
Cloudflare
Stream Video & Audio + Vision Agents
Stream (GetStream)
LiveKit Agents + LiveKit Cloud
LiveKit
CategoryPlatformsPlatformsPlatforms
StatusBetaGAGA
Est. per minute$0.015 - 0.05$0.02 - 0.08$0.03 - 0.08
How that was worked outWorkers AI STT ~$0.009/min + TTS ~$0.01-0.03/min (assuming roughly 600-1,000 spoken characters per agent minute) + small LLM token cost + near-zero transport within the free 1 TB. Assumes the Realtime Agents runtime itself stays free/cheap; not a vendor figure. No PSTN included (Cloudflare does not sell phone minutes).Transport is about $0.0006/min for agent + user; the rest is your STT/LLM/TTS or realtime model bill from providers. Not a vendor figure.LiveKit's own calculator default is $0.0479/min (agent session $0.01 + telephony $0.01 + STT $0.0075 + LLM $0.0014 + TTS $0.009 + observability $0.01). Low end: WebRTC only, cheap STT/TTS, small LLM. High end: phone calls, premium TTS (Cartesia/ElevenLabs class) and a larger LLM. Speech-to-speech realtime models cost much more and are priced in the model segment.
Pricing modelusageusageusage
Free tier1,000 GB/month SFU+TURN egress; 10,000 Workers AI Neurons/day.$100 free credits (Build).Build plan: 1,000 agent session minutes/month, $2.50 inference credit, 1 US number with 50 inbound minutes, no credit card.
Connects byWebRTC, WebSocketWebRTCWebRTC, SIP, PSTN
Audio inWebRTC (Opus) or WebSocket PCM via the WebSocket adapterWebRTCOpus over WebRTC; SIP/PSTN calls bridged in
Audio outSameWebRTCOpus over WebRTC; telephony codecs on SIP legs
LanguagesDepends on Workers AI or third-party models (Deepgram, ElevenLabs via providers).Depends on providers.Depends on the chosen STT/TTS/LLM; LiveKit Inference restricts to EU-hosted models for EU agents.
Latency (vendor claim)Vendor emphasises 330+ city edge network; no verified end-to-end number.No verified number.No single vendor number verified; depends on models and region.
Key limits
  • No native PSTN numbers; bring a SIP/telephony provider
  • Voice agent package is Beta
  • No PSTN in sources reviewed
  • HIPAA via sales
  • Concurrent agent sessions: 5 Build, 20 Ship, up to 600 Scale (page ambiguous), custom Enterprise
  • Inference concurrency: 5 / 20 / 50
  • Agent deployments: 1 / 2 / 4
  • WebRTC concurrent connections: 100 / 1,000 / 5,000
High-severity warnings
  • None
  • None
  • None
ComplianceNot verified for these products in this research.HIPAA: contact sales (per pricing page). Others not verified.SOC 2 Type II (Security, Availability, Confidentiality) and GDPR per LiveKit security page; HIPAA/BAA not verified.
Self-hostableNoYesYes
Last checked2026-10-102026-10-102026-10-10
Key numbers and features
Platform $/min-$0.0006$0.01
All-in priceNoNoNo
Entry plan $/mo$0$0$50
Free tierYesYesYes
Free credit $-$100$2.5
Phone numbersNoNoYes
Own LLMYesYesYes
Own keysYesYesYes
No-code---
RecordingYesYesYes
Noise cancel-YesYes
Smart turnsYes-Yes
Latency ms---
Languages---
Max session min---
Concurrency--20
WebRTCYesYesYes
WebSocketYes--
Phone / SIP-NoYes
HIPAA---
SOC 2--Yes
EU data--Yes
Self-hostNoYesYes
Open weightsNoYesYes
High warnings000