The short version
Retell AI is a developer-oriented voice API for building call agents, billed by usage. It suits teams comfortable wiring the agent together in code and running the surrounding app.
How they compare
| CustomWeb | Retell AI | |
|---|---|---|
| Who builds it | You — no-code builder, we host | Developers — via API in code |
| Channels | Phone + web chat + SMS in one agent | Voice (API) |
| Pricing model | Pay-as-you-go: per-minute / per-message fee, providers at cost | Usage-based, per minute |
| Booking, KB, analytics built in | Yes | You assemble it |
| Bring your own provider keys | Yes | Yes |
| White-label / client portal | Built-in | Build your own |
Comparison reflects each platform's public positioning as of 2026 — check vendor sites for current details.
Features compared
| CustomWeb | Retell AI | |
|---|---|---|
| Phone (voice) | ||
| Free phone number | Paid | |
| Web chat | ||
| SMS / text | ||
| No-code builder | ||
| Calendar booking built in | ||
| White-label / reseller |
Pricing compared
CustomWeb
- Entry price
- $0.03 / min voice · $0.003 / msg chat & SMS — provider usage at cost
- Subscription
- None — pay as you go
- Free to start
- $1 in free credits + a phone number, no card
One flat orchestration fee; LLM, voice, and telephony pass through at provider cost. Every account includes one phone number for testing.
Retell AI
- Entry price
- $0.07 / min base + LLM / TTS / telephony
- Subscription
- None (usage-based)
- Free to start
- $10 in free credits
Headline rate excludes model and telephony costs.
Competitor pricing is each vendor's published rate as of June 2026 (or "contact sales" where none is listed) — check their site for current pricing. CustomWeb's rates are fixed and shown in full.
Why teams pick CustomWeb
Launch without code
A no-code builder and hosted runtime mean you go live in minutes, not sprints.
One agent, three channels
Phone, chat, and SMS from a single knowledge base and wallet.
Everything bundled
Booking, knowledge base, transcripts, and analytics included — nothing to stitch together.
Who each is best for
CustomWeb is best for
Businesses that want a working multi-channel agent without an engineering project.
Retell AI is best for
Developers building a custom voice app and comfortable maintaining it.