Compare realtime APIs

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

Google Project Genie (Genie 3)
Google DeepMind
Synthesia Interactive Avatars
Synthesia
Odyssey API (interactive world model video)
Odyssey
CategoryAvatars + videoAvatars + videoAvatars + video
StatusPreviewGABeta
Est. per minuten/an/an/a
How that was worked outNo APINo published realtime rate foundNo public price list found; pricing page 404s
Pricing modelsubscriptionsubscriptionsubscription
Free tierNoneNone found for interactive avatars.Free accounts get 5 concurrent streams; hour quota not published.
Connects byLiveKitWebRTC, WebSocket
Audio inn/aYour LiveKit agent's TTS audioNone
Audio outn/aYour TTSNot documented
Languagesn/aNot captured.Text prompts.
Latency (vendor claim)n/aNot captured.Third-party reports about 20-22 fps at 720p (frame every ~50 ms); no official latency figure.
Key limits
  • No API
  • Up to 5 avatar IDs per session
  • Each stream max 150 s by default (start a new stream to continue)
  • Each connection max 60 min
  • Idle connection with no active stream disconnects after 15 min
  • Up to 10 queued simulation jobs
High-severity warnings
  • No API
  • No public realtime price
  • No published pricing
Compliancen/aNot verified in this pass.Not verified.
Self-hostableNoNoNo
Last checked2026-10-102026-10-102026-10-10
Key numbers and features
Session $/min---
Entry plan $/mo-$89-
Free tierNoNoYes
Free credit $---
Custom avatar---
From photo---
Own LLM-Yes-
Own voice-Yes-
Interrupts---
Resolution p--720
FPS--20
CPU only---
Latency ms---
Languages---
Max session min--2.5
Concurrency--5
WebRTC-YesYes
WebSocket--Yes
Phone / SIP---
HIPAA---
SOC 2---
EU data---
Self-hostNoNoNo
Open weightsNoNoNo
High warnings111