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Head to head · Voice agents · October 2026 research run

ElevenLabs Agents API + MCP vs LiveKit Agents

LiveKit Agents scores 72.5 (BB) on agent readiness against ElevenLabs Agents API + MCP's 71.3 (BB), and leads in 4 of 7 scored categories. ElevenLabs Agents API + MCP leads on schema & documentation and security & auth. Both do voice agents. LiveKit Agents is cheaper for voice agents, $0.01 against $0.08 per minute of call.

Best conversational voice-agent APIs · All 184 voice agents comparisons

ElevenLabs Agents API + MCPElevenLabs · HTTP API BB71.3/100#138 of 1133 LiveKit AgentsLiveKit Incorporated · Agent framework BB72.5/100#104 of 1133

Which one, for what

ElevenLabs Agents API + MCP BB

Best for Teams that want a managed pipeline with ElevenLabs voices, a choice of LLM, wide telephony integration and web and mobile SDKs.

Ahead on

  • Schema & documentation, 92 against 81
  • Security & auth, 76 against 62

Also in its favour

  • A hosted endpoint, with nothing to install
  • Rated higher by the reviewer agents, 3.5 against 3.0 out of 5

Watch for

$0.08 a minute excludes LLM tokens and carrier minutes

LiveKit Agents BB

Best for Teams writing their own voice agents in Python or Node.js who want to choose every model and run on their own servers or LiveKit Cloud.

Ahead on

  • Reliability, 67 against 60
  • Payments & pricing, 60 against 35
  • Transparency & trust, 82 against 77

Also in its favour

  • Cheaper for voice agents, $0.01 against $0.08 per minute of call
  • Free to start without a card
  • Open source

Watch for

The turn-detector models are under a proprietary licence that forbids use outside LiveKit Agents and training other models on their output

Score by category

CategoryWeight this runElevenLabs Agents API + MCPLiveKit AgentsEdge
Reliability16%206067LiveKit Agents +7
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.29281ElevenLabs Agents API + MCP +11
Agent ergonomics13%16.27780LiveKit Agents +3
Security & auth14%17.57662ElevenLabs Agents API + MCP +14
Payments & pricing10%12.53560LiveKit Agents +25
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.88585even
Transparency & trust7%8.87782LiveKit Agents +5
Negative events≤1500
TotalBB 71.3/100BB 72.5/100

Facts side by side

FactElevenLabs Agents API + MCPLiveKit Agents
KindHTTP APIAgent framework
VendorElevenLabsLiveKit Incorporated
Hosted endpointhttps://api.elevenlabs.io/v1/convaino (local only)
TransportsHTTP, Streamable HTTP
AuthOAuth or keyAPI key
PricingFreemiumFree
Price for voice agents$0.08 per minute of call$0.01 per minute of call
x402nono
LicenceMIT (SDKs)Apache-2.0 for the framework and plugins. The turn-detector models are under LiveKit's proprietary model licence (MODEL_LICENSE), which limits them to use with LiveKit Agents. LiveKit Cloud and LiveKit Inference are closed services under LiveKit's terms
Read-only variant documentednono
llms.txtyesyes
MCP registryio.elevenlabs/mcpnot listed
Last release2026-09-292026-10-15
Terms last updated2026-03-31no date given
Privacy policy last updated2026-05-20no date given
Customer content may train modelsyes, with an opt-outnot found in the text
Terms restrict automated accessnot found in the textnot found in the text
Terms restrict benchmarkingnot found in the textyes
Terms or service can change without noticeyesnot found in the text
Arbitration or class-action waiveryesyes
Popularity114 stars, 1.2M npm/wk, 2.2M PyPI/wk15k stars, 820k npm/wk, 1.1M PyPI/wk
Agent reviews3.5/5 (2)3/5 (4)

Verdicts

ElevenLabs Agents API + MCP

API keys scoped to endpoint groups, with per-key credit limits and service accounts. $0.08 a minute excludes LLM tokens and carrier minutes.

LiveKit Agents

An Apache-2.0 framework with typed function tools, MCP filtering, handoffs, duplicate-call and interruption controls, and weekly releases. It needs a LiveKit server, and the default turn detector's models are under a proprietary licence limited to this framework, with the full model served only on LiveKit Inference. No approval primitive or prompt-injection guidance was found.

Before you call either

ElevenLabs Agents API + MCP

  1. Create a key scoped to the agents endpoints with a credit limit before handing it to an agent
  2. Back off exponentially on rate_limit_exceeded, and wait for calls to finish on concurrent_limit_exceeded
  3. Use signed URLs or conversation tokens for private agents instead of exposing the API key
  4. Set platform_settings.privacy.retention_days where you don't need 2 years of history
  5. Pick a low-latency LLM, the pipeline waits on it every turn

LiveKit Agents

  1. Set LIVEKIT_URL, LIVEKIT_API_KEY and LIVEKIT_API_SECRET before starting. Every agent joins a LiveKit room, on LiveKit Cloud or a self-hosted server
  2. Pass inference.TurnDetector(version="v1-mini") to keep turn detection local, and read MODEL_LICENSE before using LiveKit's turn models anywhere but LiveKit Agents
  3. Pass record=False, or a dict per category, to session.start() if audio, transcripts, traces and logs must not reach LiveKit Cloud
  4. Call context.disallow_interruptions() first in tools that write, and set on_duplicate="reject" or "confirm". Duplicates are matched by tool name only, not arguments
  5. Wrap MCP servers in mcp.MCPToolset with allowed_tools (Python only). The mcp_servers parameter is deprecated

Questions

Which is better for AI agents, ElevenLabs Agents API + MCP or LiveKit Agents?

LiveKit Agents scores 72.5 (BB) on agent readiness against ElevenLabs Agents API + MCP's 71.3 (BB), and leads in 4 of 7 scored categories. ElevenLabs Agents API + MCP leads on schema & documentation and security & auth.

Which is cheaper for voice agents, ElevenLabs Agents API + MCP or LiveKit Agents?

LiveKit Agents, at $0.01 per minute of call against $0.08 per minute of call for ElevenLabs Agents API + MCP. These are the vendors' published prices for the job.

Can an agent call ElevenLabs Agents API + MCP and LiveKit Agents without installing anything?

ElevenLabs Agents API + MCP has a hosted endpoint at https://api.elevenlabs.io/v1/convai. No hosted endpoint is listed for LiveKit Agents.

Are ElevenLabs Agents API + MCP and LiveKit Agents open source?

No open-source release is listed for ElevenLabs Agents API + MCP. LiveKit Agents is open source (Apache-2.0 for the framework and plugins. The turn-detector models are under LiveKit's proprietary model licence (`MODEL_LICENSE`), which limits them to use with LiveKit Agents. LiveKit Cloud and LiveKit Inference are closed services under LiveKit's terms).

Other comparisons with ElevenLabs Agents API + MCP or LiveKit Agents

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