1 · Our product
Sysevo
$29–$399 a month · 100 / 250 / 500 / 800 / 1,250 voice minutes
AI voice agents with call recordings, analysis and caller memory on every plan, plus a CRM, bookings, quotes, e-signature and payments from Connect.
Included, where Vapi charges extra or does not list it: caller memory across calls, voice cloning, CRM and sales pipeline, booking links and calendar, quotes and proposals, contracts and e-signature, invoices and payments, WhatsApp, email campaigns and sequences, website and landing pages, reviews and reputation, workflow automation, projects and tasks, supported integrations and mobile app.
Vapi offers, Sysevo does not: white label for agencies.
2 · AI voice agent platforms
ElevenLabs Agents
$6 / mo · Monthly subscription tiers that include a call-minute allowance
ElevenAgents is ElevenLabs' platform to configure, deploy and monitor human-sounding voice and chat agents, with no-code setup plus developer SDKs and APIs. It is billed per call minute on monthly subscription tiers, with LLM usage passed through separately.
- Low entry price with published tiers: a free plan and paid plans from $6/mo, each with an included call-minute allowance and a flat $0.08/min for extra minutes. Source
- Broad voice and language coverage, drawing on ElevenLabs' own TTS models; agents page cites 90+ languages and a library of thousands of voices. Source
Lists, where Vapi does not: caller memory across calls, invoices and payments, WhatsApp, projects and tasks and supported integrations.
Not listed, where Vapi has it: white label for agencies.
3 · AI voice agent platforms
Retell AI
$0.07 / min · Pay as you go per minute (component-based, $0.07-$0.31/min for voice),…
Retell is a platform to build, test, deploy and monitor AI voice and chat agents with telephony, prompts, tools and analytics. It is billed pay-as-you-go per minute, with the rate built from voice infrastructure, TTS, LLM and telephony components.
- Granular, published per-component pricing (voice infra, TTS, LLM, telephony, add-ons) with no platform fee and billing to the second. Source
- Wide model choice: many LLMs (GPT, Claude and others) and TTS providers including ElevenLabs, Cartesia, MiniMax, Fish and OpenAI, plus speech-to-speech options. Source
Lists, where Vapi does not: caller memory across calls, projects and tasks and supported integrations.
Not listed, where Vapi has it: white label for agencies.
4 · AI voice agent platforms
Bland AI
$0.14 / min · Per connected minute (rate depends on plan) plus transfer-time minutes
Bland is an enterprise voice AI platform for high-volume, regulated and complex phone workflows, owning its stack of telephony, speech-to-text, language model, text-to-speech and pathway orchestration. Self-serve plans charge a per-minute rate that bundles LLM, STT and TTS, with an optional monthly platform fee for lower rates and higher limits.
- Simple bundled per-minute rate that covers LLM, STT and TTS with no per-token charges. Source
- Owns its full voice stack (telephony, STT, LLM, TTS, orchestration); docs cite sub-400ms response latency. Source
Lists, where Vapi does not: caller memory across calls.
Not listed, where Vapi has it: white label for agencies.
5 · AI voice agent platforms
Synthflow
By quote · Quote: annual enterprise agreement scoped to call volume, telephony,…
Synthflow describes itself as an enterprise conversational AI platform whose voice agents work inside the phone systems and CRMs customers already use. It is sold as an annual enterprise agreement scoped to call volume, phone system, integrations, security needs and launch support.
- Built to run inside existing phone systems: native telephony, SIP trunking, and contact-centre integrations such as Five9, RingCX and Zoom Contact Center. Source
- Hands-on launch: forward-deployed engineers implement, test and launch agents with your team where included in the agreement. Source
Lists, where Vapi does not: caller memory across calls, WhatsApp and supported integrations.
6 · AI receptionists and answering
My AI Front Desk
$99 / mo · Per account: one self-serve plan with included usage, plus credits for…
My AI Front Desk (branded 'Frontdesk', from AI Front Desk, Inc.) is an AI-powered front office platform for small and medium businesses. Its AI receptionist answers calls, texts, e-mails and chats, and keeps one memory per customer across channels.
- One plan covers voice, SMS, e-mail, chatbot, web forms, CRM and automations, with published usage allowances and overage rates. Source
- Transparent credit pricing: 1 credit = $0.01, voice overage $0.25/min, purchased credits don't expire. Source
Lists, where Vapi does not: caller memory across calls, email campaigns and sequences, website and landing pages, projects and tasks, field service and work orders and supported integrations.
Not listed, where Vapi has it: power dialer for your reps.
7 · CRM and marketing platforms
GoHighLevel
$97 / mo · Flat monthly platform fee per agency account (sub-account limits vary…
HighLevel is an all-in-one sales and marketing platform covering CRM and pipelines, funnels and websites, email and SMS marketing, calling, booking calendars, reputation management and AI agents, with sub-accounts for each business or client.
- Very broad all-in-one toolset — CRM, funnels/websites, email and SMS, calendars, reputation, social, courses, communities and payments — with unlimited contacts and users on every plan. Source
- Built for agencies: unlimited sub-accounts from $297/month, white-label desktop app, and SaaS mode on the $497 plan to resell the platform and rebill usage with markup. Source
Lists, where Vapi does not: quotes and proposals, contracts and e-signature, invoices and payments, WhatsApp, email campaigns and sequences and website and landing pages.
8 · AI receptionists and answering
Dialzara
$29 / mo · Per account, with monthly plans that include minutes plus per-minute overage
Dialzara is an AI phone answering service for small businesses. Its AI receptionist answers calls 24/7, books appointments and captures leads, and the same platform runs outbound voice agents, a two-way SMS agent and a website chatbot.
- Low entry price ($29/month) and a clear ladder of minute bundles with published overage rates. Source
- The website chatbot is bundled free with any voice plan (100 sessions/month), and SMS and outbound share the same knowledge base and dashboard. Source
Lists, where Vapi does not: caller memory across calls, projects and tasks and supported integrations.
Not listed, where Vapi has it: power dialer for your reps, voice cloning, MCP for AI assistants and compliance and certifications.