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Retell AI vs LiveKit Agents

A side-by-side editorial comparison of Retell AI and LiveKit Agents — release velocity, themes, recent moves, and the top alternatives to consider.

Retell AI vs LiveKit Agents: at a glance

FeatureRetell AILiveKit Agents
Sectorai-assistantsai-assistants
Velocity score0.06.3
Sparks · 30d01
Top themesvoice-ai, conversation-flows, agent-composition, knowledge-basevoice-agents, real-time, async-tools, turn-detection
Last editorial update3h ago15h ago
WebsiteVisit →Visit →

What is Retell AI?

Voice-AI platform building toward composable, flexibly-routed agents

Retell builds voice AI agents, and the captured releases (through early 2026) center on making complex agents maintainable and adaptive: Agent Transfer for handing context between modular agents, Flex Mode for non-linear flow navigation, reusable Flow Components, and node-level knowledge bases. Add to that a chat widget, an AI QA Analyst, and periodic pricing adjustments.

Read the full Retell AI trajectory →

What is LiveKit Agents?

LiveKit Agents makes async tools first-class as its voice-agent framework matures

LiveKit Agents is an open-source framework for building real-time voice AI agents, shipping on a fast point-release train via GitHub. The recent window pairs genuine capability work — first-class asynchronous tools and a v1.0 turn detector — with a steady flow of provider/model integrations (AssemblyAI, Gemini, Soniox, fishaudio) and routine fixes.

Read the full LiveKit Agents trajectory →

Retell AI vs LiveKit Agents: editorial side-by-side

R
Retell AI
AI-ASSISTANTS
0.0

Voice-AI platform building toward composable, flexibly-routed agents

◆ Current state

Retell builds voice AI agents, and the captured releases (through early 2026) center on making complex agents maintainable and adaptive: Agent Transfer for handing context between modular agents, Flex Mode for non-linear flow navigation, reusable Flow Components, and node-level knowledge bases. Add to that a chat widget, an AI QA Analyst, and periodic pricing adjustments.

◆ Where it's heading

The arc is from rigid, single-purpose call flows toward modular, composable agent systems — reusable sub-agents and components, knowledge scoped per node, and flows that follow the caller rather than forcing a script. It's an enterprise-maintainability story layered on top of the core voice capability.

◆ Prediction

Expect continued investment in flow flexibility and agent composition, plus QA/observability tooling. Note the captured changelog runs only through January 2026, so recent cadence is unclear from this data.

L
LiveKit Agents
AI-ASSISTANTS
6.3

LiveKit Agents makes async tools first-class as its voice-agent framework matures

◆ Current state

LiveKit Agents is an open-source framework for building real-time voice AI agents, shipping on a fast point-release train via GitHub. The recent window pairs genuine capability work — first-class asynchronous tools and a v1.0 turn detector — with a steady flow of provider/model integrations (AssemblyAI, Gemini, Soniox, fishaudio) and routine fixes.

◆ Where it's heading

The framework is hardening the hard parts of voice agents: knowing when to respond (turn detection), staying responsive during long tool calls (async tools, filler phrases), and supporting an ever-wider catalog of STT/TTS/LLM providers. It's moving from breadth of integrations toward depth in conversational UX.

◆ Prediction

Expect continued provider integrations plus more conversational-quality work — turn detection, barge-in, and async tool ergonomics — as the v1.6 line stabilizes.

Alternatives to Retell AI and LiveKit Agents

Other ai-assistants products tracked by Sparkpulse, ranked by recent ship velocity. Each card links to a full editorial trajectory and lets you pivot into a head-to-head comparison with either Retell AI or LiveKit Agents.

See all Retell AI alternatives → · See all LiveKit Agents alternatives →

Recent activity from Retell AI and LiveKit Agents

Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.

  1. 16h agoLiveKit Agents1.6.4: Protoface avatar plugin + EoT fixes
  2. 2d agoLiveKit Agents1.6.3: STT and end-of-turn fixes
  3. 5d agoLiveKit Agents1.6.2: new AssemblyAI, Gemini, Soniox STT/TTS options
  4. 5d agoLiveKit Agents1.6.1: Turn Detector v1.0 (audio + text)
  5. 13d agoLiveKit Agents1.6.0: first-class asynchronous tools
  6. 16d agoLiveKit Agents1.5.19 release candidate (no notes)
  7. 5mo agoRetell AIAI QA Analyst
  8. 6mo agoRetell AIFlex Mode for Conversation Flows
  9. 7mo agoRetell AIConversation Flow Components are Live! - Reusable flows & functions across agents.
  10. 9mo agoRetell AINode KB — Smarter Knowledge Access at the Node Level
  11. 10mo agoRetell AITelnyx Pricing Adjustment
  12. 11mo agoRetell AIAgent Transfer

Frequently asked questions

What is the difference between Retell AI and LiveKit Agents?

They serve adjacent needs but don't currently overlap on shipped themes. LiveKit Agents is currently shipping more aggressively (velocity 6.3 vs 0.0), with 1 editorial sparks in the last 30 days against 0. See the at-a-glance table above for a side-by-side breakdown of velocity, recent sparks, and editorial themes.

Is Retell AI better than LiveKit Agents?

Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. LiveKit Agents is currently shipping more aggressively (velocity 6.3 vs 0.0), with 1 editorial sparks in the last 30 days against 0. For your specific use case, the alternatives sections above list other ai-assistants products to evaluate alongside.

What are the best alternatives to Retell AI?

Top Retell AI alternatives in ai-assistants are ranked by recent ship velocity. Browse the "Retell AI alternatives" section above for the current picks, or visit /alternatives/retell for the full list with editorial commentary on each.

What are the best alternatives to LiveKit Agents?

Top LiveKit Agents alternatives in ai-assistants are ranked by recent ship velocity. Browse the "LiveKit Agents alternatives" section above for the current picks, or visit /alternatives/livekit-agents for the full list with editorial commentary on each.