Compare · Retell AI
Retell AI alternatives
Retell is polished, production-ready, and — by independent measurement — the fastest managed voice AI platform as of this writing. The question is what happens when you want to choose your own models. Here is the honest comparison.
The short version: Retell manages the speech pipeline for you — that is both its appeal and its boundary. STT and TTS are Retell’s choices, tuned well, with limited bring-your-own options. Rayvoc takes the other path: any OpenAI-compatible LLM, your own TTS and STT if you want them, native telecom with DIDs in 100+ countries, and first-class BYOC — at one transparent all-in per-minute rate.
Rayvoc vs Retell AI
| Rayvoc | Retell AI | |
|---|---|---|
| Telephony | Native: DIDs in 100+ countries, outbound termination in the same stack | Numbers available; telephony billed alongside the voice engine |
| BYOC SIP trunking | First-class, no surcharge | SIP trunk to any carrier supported, no SIP surcharge — credit where due |
| BYO models | Any OpenAI-compatible LLM + your own TTS and STT | Custom LLM possible; STT/TTS pipeline is Retell-managed with limited BYO |
| Pricing model | One all-in per-minute rate; lower rate with your own models | $0.07/min voice engine + LLM + telephony → realistic $0.11–$0.15/min |
| Latency | Sub-second voice-to-voice by design; per-call breakdown shown | ~600ms measured — best-in-class as of this writing |
| Free trial | 14 days, 1 channel, 100 minutes, real phone number | $10 free credit |
Competitor details as of June 2026; verify current pricing on their sites.
The honest analysis
Where Retell genuinely wins
Retell’s managed pipeline is the real thing: ~600ms measured voice-to-voice latency is the best independent number in the market as of this writing, the platform is production-hardened, SIP trunking to any carrier carries no surcharge, and its vertical content (healthcare, real estate, collections) shortens the path from idea to deployed agent. If you want a system that works on day one and you are happy with Retell’s model choices, it is an excellent platform.
Where the managed stack becomes a ceiling
The same management that makes Retell easy makes it fixed. The STT and TTS pipeline is Retell’s, with limited bring-your-own options — so a domain-tuned speech model, a negotiated inference contract, or next quarter’s better TTS vendor mostly cannot ride along. Costs stack as voice engine ($0.07/min) plus LLM plus telephony, landing at a realistic $0.11–$0.15/min; reasonable, but the structure means model-level savings are largely Retell’s to capture, not yours.
Why Rayvoc for model freedom plus native telecom
Rayvoc is built for teams who want Retell’s production polish without adopting someone else’s model stack. Connect any OpenAI-compatible LLM, bring your own TTS and STT (or use ours), and run multilingual agents across 20 auto-detected languages — including native speech-to-speech via Grok for the fastest turns. Telephony is in the same stack: DIDs in 100+ countries, outbound termination, and BYOC with no surcharge. One all-in rate covers everything; bringing your own models lowers it — see pricing.
Other Retell alternatives worth a look
Vapi
The opposite trade from Retell: maximum bring-your-own-model freedom (full BYO across STT, LLM, and TTS) at the cost of managing four vendors and four bills, with telephony rented through Twilio, Vonage, or Telnyx. Realistic all-in cost runs $0.13–$0.31/min, and measured latency outside the US has exceeded 1000ms in some tests. See our full Vapi comparison.
ElevenLabs Agents
The pick when voice quality is your top criterion — ElevenLabs’ TTS remains a benchmark. Agents support custom LLMs and SIP trunking, with bundled minutes and $0.08–$0.10/min overage. The constraint is structural: TTS is locked to ElevenLabs, so if you ever want a different voice vendor or a speech-to-speech model, you are rebuilding elsewhere.
LiveKit Agents / Pipecat (open source)
Free, fully composable frameworks where every component is your choice — the logical endpoint of wanting more control than Retell offers. The cost is operational: you host, scale, monitor, and negotiate telephony contracts yourself. Worth it for teams with infra engineers and unusual requirements; overkill for most product teams.
Retell AI alternatives: FAQ
Why do teams look for Retell AI alternatives?
Rarely because Retell is bad — its ~600ms measured latency is best-in-class as of this writing. The usual reasons are model control: the STT/TTS pipeline is Retell-managed with limited bring-your-own options, so teams with domain-specific speech models, negotiated inference pricing, or a preference for swapping components as the market evolves eventually hit a ceiling.
Is Retell cheaper than Rayvoc?
Retell’s realistic all-in cost is $0.11–$0.15/min as of this writing once the $0.07/min voice engine, LLM, and telephony are combined. Rayvoc charges one all-in per-minute rate covering platform, models, and telephony — and a lower rate when you bring your own model keys, which is where the economics diverge most. Current rates are on our pricing page.
Can Rayvoc match Retell’s latency?
Rayvoc targets sub-second voice-to-voice on every call, using streaming at every stage, media co-located with inference, and optional speech-to-speech models (including Grok) that skip the STT→LLM→TTS chain entirely. We show a per-stage latency breakdown on every call, so you measure rather than trust. See how we engineer latency.
Does Rayvoc support BYOC like Retell does?
Yes — and it is a headline feature rather than a checkbox. Retell deserves credit for supporting SIP trunks to any carrier without a surcharge; Rayvoc does the same and pairs it with native DIDs in 100+ countries and outbound termination, so you can mix owned numbers and your own trunks in one platform. Details at BYOC & SIP trunking.
Keep the polish. Choose your own models.
Every account starts with a 14-day free trial — 1 concurrent channel, a real phone number, and full platform access.