Compare · Waterr vs ElevenLabs
Waterr vs ElevenLabs
ElevenLabs runs one of the most complete voice-agent platforms available — ElevenAgents ships tools and MCP support, knowledge bases, telephony, an embeddable widget, automated testing, and real post-call analysis with success evaluation. What it does not ship is a video meeting: agents are voice-first, avatar video comes via a HeyGen integration you embed in your own app, and agent vision is not documented. Waterr is video-native: personas run live meetings participants join by link, read the camera and shared screen, and every session returns graded goal scores with the transcript and recording.
vs
At a glance
Waterr and ElevenLabs, side by side
| Waterr | ElevenLabs | |
|---|---|---|
| What it is | AI meeting API — video-native, scored sessions | Voice AI platform — TTS, STT, and ElevenAgents |
| Conversation surface | Live video meeting via join link | Voice: widget, phone (SIP/Twilio), WhatsApp; no hosted video meeting |
| Avatar video | Built-in — personas with avatars in the meeting | Via HeyGen LiveAvatar integration, embedded in an app you build and host |
| Vision | Yes — persona reads camera and screen share | Not documented for agents |
| Evaluation | Graded goal scores + written feedback per session | Success Evaluation — pass / fail / unknown per criterion, with rationale |
| Post-call delivery | Transcript + scores in one GET; recording endpoint; signed webhooks | Post-call webhooks: transcript, evaluation results, audio (MP3) |
| Tool calling | Signed webhooks or client-side, managed lifecycle | Yes — webhook, client, and system tools; MCP support |
| Knowledge base | Yes — per docs | Yes — RAG over uploaded documents |
| Telephony | No — video meetings only | Yes — SIP, Twilio, batch outbound, WhatsApp |
| Pricing shape | Platform pricing per meeting usage | Per call minute, LLM and telephony billed on top |
| Best for | Interviews, roleplay, screening — meetings needing scores | Voice agents at scale: support lines, receptionists, embedded voice |
Competitor claims verified against elevenlabs.io/docs (ElevenAgents pages) and pricing as of July 2026. ElevenLabs ships fast — check current docs.
The honest split
Which one should you pick?
Choose Waterr when…
- The conversation is a meeting — participants on camera, screens shared, joined from a link.
- The persona must see: technical interviews over a shared screen, body-language-aware roleplay.
- You need graded scoring against rubric-style goals, not pass/fail verdicts — with written feedback per participant.
- Scenario, persona, and goals should be one portable API object your systems create programmatically.
Choose ElevenLabs when…
- Your agent lives on the phone, in a web widget, or on WhatsApp — voice-first by design.
- You need mature platform breadth today: agent testing, A/B experiments, semantic search over conversations.
- Voice quality and the voice library are decisive — five thousand plus voices, thirty-one languages.
- You want binary success criteria with rationale — their Success Evaluation does that well.
The details
Taking ElevenAgents seriously
This is not a comparison against a thin wrapper. ElevenAgents is a complete voice-agent platform: webhook, client, and system tools plus MCP; knowledge bases with RAG; SIP and Twilio telephony with batch outbound; an embeddable widget; automated testing with simulated conversations; and a real analysis layer — success evaluation criteria, structured data collection, sentiment, post-call webhooks. Teams shipping phone or widget voice agents are well served there, and we would not argue otherwise.
The video line is bright
ElevenLabs’ own docs draw the boundary clearly. Video avatars come from a HeyGen LiveAvatar integration where ElevenLabs handles the agent and audio, HeyGen renders the face, and the developer builds and hosts the application that embeds both — configuration, credentials, events, UI. That is an embedded avatar stream inside your app, not a meeting anyone joins by link. And agent-side vision — the model seeing a camera or a shared screen — is not documented at all.
Waterr’s sessions are meetings first: a participant opens a link, consents, turns on a camera, shares a screen. The persona watches a candidate reason through a whiteboard rather than listen to them describe it. For interviews, screening, and roleplay, that surface is not a nice-to-have — it is the product.
Verdicts vs grades
ElevenLabs’ Success Evaluation passes the transcript to an LLM per criterion and returns success, failure, or unknown with a rationale — genuinely useful for goal-was-met checks. Waterr’s goals produce graded scores with written feedback against scoring instructions you define — closer to a rubric than a checklist. For a support call, a pass/fail on “issue resolved” is enough. For a hiring decision or a rep’s coaching plan, you want to know how well, not just whether. That difference in evaluation depth is most of the reason the two products get built differently.
FAQ
Common questions
Not as a hosted surface. Its documented avatar path is a HeyGen LiveAvatar integration embedded in an application you build and host — ElevenLabs supplies agent and audio, HeyGen the video stream. There is no join-by-link meeting product documented as of July 2026. Waterr sessions are video meetings by default.
Run your first AI meeting today.
One POST creates the scenario. One link runs the meeting. The API hands back the transcript, goal scores, and recording.