CHECKED OCT 10, 2026

Compare realtime APIs

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

Odyssey API (interactive world model video)
Odyssey
Synthesia Interactive Avatars
Synthesia
Daydream (hosted StreamDiffusion)
Daydream / Livepeer
CategoryAvatars + videoAvatars + videoAvatars + video
StatusBetaGABeta
Est. per minuten/an/an/a
How that was worked outNo public price list found; pricing page 404sNo published realtime rate foundAPI pricing not confirmed
Pricing modelsubscriptionsubscriptioncredits
Free tierFree accounts get 5 concurrent streams; hour quota not published.None found for interactive avatars.Unclear for the API.
Connects byWebRTC, WebSocketLiveKitWebRTC
Audio inNoneYour LiveKit agent's TTS audioNone
Audio outNot documentedYour TTSNone
LanguagesText prompts.Not captured.Text prompts.
Latency (vendor claim)Third-party reports about 20-22 fps at 720p (frame every ~50 ms); no official latency figure.Not captured.Vendor-described sub-second latency (secondary source).
Key limits
  • 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
  • Up to 5 avatar IDs per session
  • 'Submit StreamDiffusion Prompt' endpoint marked deprecated in the API reference
High-severity warnings
  • No published pricing
  • No public realtime price
  • Pricing and product direction unclear
ComplianceNot verified.Not verified in this pass.Not verified.
Self-hostableNoNoYes
Last checked2026-10-102026-10-102026-10-10
Key numbers and features
Session $/min---
Entry plan $/mo-$89-
Free tierYesNo-
Free credit $---
Custom avatar---
From photo---
Own LLM-Yes-
Own voice-Yes-
Interrupts---
Resolution p720--
FPS20--
CPU only---
Latency ms---
Languages---
Max session min2.5--
Concurrency5--
WebRTCYesYesYes
WebSocketYes--
Phone / SIP---
HIPAA---
SOC 2---
EU data---
Self-hostNoNoYes
Open weightsNoNoYes
High warnings111