Summary. Retell AI is a voice agent platform with a drag-and-drop studio, APIs and SDKs, $10 in free credits and per-minute pricing assembled from voice, LLM, telephony and add-on components. Pick it if you or a partner will build and tune the agent. RevStrike is a done-for-you AI voice agent for solar, pest control and insurance teams, set up on one 45-minute call and guaranteed to book. Pick it if you want leads called within seconds with nothing to assemble.
Side by side
| Retell AI | RevStrike | |
|---|---|---|
| What it is | Voice agent platform: no-code visual studio plus APIs and SDKs, with simulation testing before deployment (retellai.com, read 2026-10-08) | Done-for-you AI voice agent that calls a company's own leads and books or live-transfers them |
| Who it's for | Startups, mid-market and enterprises building voice automation; vendor lists healthcare, financial services, insurance, logistics, retail, travel and debt collection | Solar installers and dealers, pest control companies, independent insurance agencies |
| Setup | Self-serve build in the studio, or through an agency partner; enterprise gets custom terms | A 45-minute onboarding call; live the same day. No self-serve builder |
| Pricing | Pay as you go: "$0.07 to $0.31 / min" for voice agents, assembled from voice infrastructure $0.055/min, platform TTS $0.015/min, LLM by model, US telephony $0.015/min, plus add-ons (knowledge base $0.005, denoising $0.005, guardrails $0.005, PII removal $0.01, QA $0.10/min after 100 free). 20 free concurrent calls, $8 per extra concurrency per month. Numbers $2/month. $10 free credits. Enterprise custom (pricing page, read 2026-10-08) | $497/mo Fall Pilot: 1,000 minutes, 2 of 3 spots left, first 30 days guaranteed. Full Platform $5,000/mo for 20,000 minutes, $0.30/min after. |
| Channels | Voice, chat, SMS | Phone calls only. No SMS, no email |
| Inbound / outbound | Both, including outbound campaigns | Outbound calls to your own inbound leads (within seconds, about 10 seconds) and to your existing customer book. Does not answer your inbound line |
| Live transfer | Yes, mid-call transfer with agent briefing, plus live monitoring and human takeover | Yes, with a whisper to the rep and press-1 accept |
| Calendar booking | Appointment booking listed; calendar providers not detailed on the homepage | Google Calendar and Outlook, native |
| Integrations | Make, Twilio, Vonage, GoHighLevel, n8n, HubSpot named on the site; reviewers ask for more native CRM integrations | Google Calendar and Outlook native; HubSpot, Salesforce, GoHighLevel, Jobber and vertical tools via Zapier, HMAC-signed webhooks or CSV. No native CRM OAuth |
| Compliance features | States HIPAA, SOC 2 Type II, GDPR and ISO 27001; PII removal and safety guardrails as paid add-ons; custom BAA on enterprise | DNC scrubbing on every dial, local-time calling windows, call recording with optional notice, per-agent AI disclosure toggle, carrier-registered numbers with branded caller ID. No SOC 2 report. Encryption in transit; no at-rest encryption claim |
| Verticals | Horizontal platform with industry pages | Three: solar, pest control, insurance |
| Support | Documentation and community; "24/7 omnichannel support with dedicated portal" on enterprise | Founder-led, small team in Salt Lake City. Every pilot's calls are reviewed by hand |
When Retell AI is the better choice
- You have a developer or an agency partner and want to design, simulate and iterate on your own agents with full control over the voice, the model and the call flow.
- You need chat or SMS alongside voice, or you want a wide choice of telephony providers and automation tools such as Make and n8n.
- You need a stated SOC 2 Type II, HIPAA or ISO 27001 posture, and you want to start on $10 of free credits before committing.
When RevStrike is the better choice
- You run a solar, pest control or insurance team and you want new leads called within seconds without choosing a voice engine, an LLM or a telephony add-on.
- You want live transfer with whisper and press-1, Google Calendar or Outlook booking, and DNC and calling windows handled for you, all configured on one onboarding call.
- You want one predictable price that includes the build and a guarantee: at least one booked appointment in the first 30 days of the Pilot or a full refund (conditions apply).
What switching looks like
- Lead sources. Point your web form, ad feed or lead vendor at a RevStrike webhook, or connect your CRM through Zapier. New leads are called within seconds, inside calling hours.
- Calendar. Connect Google Calendar or Outlook. Qualified leads are booked to the rep's calendar, or live-transferred when a rep is free.
- CRM. Outcomes, recordings and transcripts write back through Zapier or a signed webhook. HubSpot, Salesforce and GoHighLevel are the common paths; vertical tools go the same way or by CSV.
- Onboarding. One 45-minute call covers the script, the qualifying questions, the disclosure setting and your consent posture. You leave the call live.
Agents and flows built in Retell do not import. Your script, your qualifying criteria and your lead sources are what carry over.