Vendor comparisons

Vendor comparisons, written by the team that ships on these SDKs

All comparisons of the vendors we actually build on. Each one starts from the same three questions: what a minute really costs, where the ceiling is, and what breaks once you are past the demo. No vendor paid for a place on this page, and we say where each one wins.

Six vendor tiles — LiveKit, a waveform, Agora, a globe and Vapi — each with a rating bar, wired into a single comparison checklist

Video and avatars

Synthetic presenters and the gap between a demo reel and a production pipeline.

Method

How we compare

The same five rows run through all fifteen comparisons, which is what makes them comparable to each other.

1Cost per minute, all in.

The advertised rate is the platform's slice. We add every model and carrier layer under it, because that is the number that lands on your invoice.

2The ceiling.

Concurrency, regions, and the point where the architecture stops being cheap. We name the volume, not the adjective.

3What breaks in production.

Turn handling on noisy lines, reconnects on weak networks, recordings that have to survive an audit. Demo conditions tell you nothing about these.

4What you own at the end.

Prompts and flows, or the repo, the data and the numbers. This is the row that decides most migrations.

5When to stay.

Every comparison names the case where the vendor is the right answer. A page where nobody wins is a page nobody believes.

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Get a free architecture review

Send the vendors you are weighing and last month's invoice. You get back the per-minute arithmetic on your own numbers, the ceiling you will hit first, and a straight answer on which one to pick. Yours to keep either way.