Vapi alternatives: which voice widget fits your SaaS website?

How do Vapi and Kawl Now compare?

Both can put a voice agent on your website. The difference is how much you build. Vapi gives developers the parts: you design an assistant, choose its transcriber, model and voice, and set up telephony, integrations and knowledge. Kawl Now starts you with a support agent and a sales agent, so your work is approving knowledge, choosing a greeting and voice, adding your website to the allowed origins, installing the widget and testing it before you switch on customer calls.

Which Vapi alternatives work on a website?

Several products can put a voice agent on a website. Each of these describes its website option on its own pages, which we checked on 8 October 2026:

• Kawl Now: ready-made support and sales voice agents for SaaS websites, answering from sources your team approves, in the browser only.
• Retell AI: a voice agent platform that leads with phone calls, with a website widget for voice, chat and callback, and a Web SDK for browser calls.
• ElevenLabs Agents: voice and chat agents for phone, web, WhatsApp, SMS and email, with a website widget that starts in voice-only mode.
• LiveKit Agents: an open-source framework for coding your own agent, with Agent Builder for building one in the browser without code and a hosted embed widget for agents deployed on LiveKit Cloud.

What does each widget do on your website?

Vapi’s documentation says its web widget adds “a complete AI chat and voice interface” to your website “with a single line of code”. You run it in voice mode or chat mode, with light and dark themes, four screen positions and an optional consent form. It needs a public API key, which Vapi says to restrict to the origins and assistants that need it. For a fully custom interface, its Web SDK starts browser calls from your own code.

Kawl Now’s widget is voice only. You paste one script tag with your workspace ID and a channel, support or sales, then add your website to that agent’s allowed origins. Visitors type what they need, allow the microphone and talk, with live captions, mute and an end-call button. Before they start, the widget tells them they are speaking with AI and that a transcript will be saved. You set the button’s label and colour, and customer calls stay off until you switch them on.

Where does each agent get its answers?

Kawl Now’s support agent uses FAQs and guides you write, plus selected .md, .mdx or .txt files from GitHub. The sales agent has its own sales notes and never sees support documents. Website URL import is switched off, so paste website content into a sales note. Each agent searches only the sources your team has approved for it. Every GitHub sync needs approval again, so a docs change reaches callers only after someone approves it.

Vapi’s knowledge base takes uploaded files, including PDF, Word, CSV, Markdown and text, and developers can also connect their own retrieval server and search logic. That gives more choice of formats and retrieval. Files you select for an assistant reach callers when you publish it, and the Publish step first shows a diff of your draft against the current version. So both have a review point: in Vapi you check the assistant’s changes when you publish, and in Kawl Now you approve each source.

How much does each one cost to try?

Kawl Now’s first 50 conversations per workspace are free, shared by support, sales and your own test calls. Each browser call lasts up to 10 minutes, and up to three calls can run at once. Paid calls aren’t available yet, so no payment is collected and calls pause once the 50 are used.

On 8 October 2026, Vapi’s pricing page listed $5 of free credits to start, then a pre-paid hosting fee of $0.05 a minute. Transcriber, model, voice and telephony costs are added for each call. Usage-only billing includes four concurrent calls and one Vapi phone number. Optional Success Packages start with Core at $29 a month, and Pro costs 10% of the Vapi hosting fee with a $999 monthly minimum. Its calculator estimates the total for the providers you pick.

When is Vapi the better choice?

Vapi is the better fit when callers need to reach you by phone or you want to build the agent yourself. Kawl Now has no phone number for customers to call, no CRM or calendar connections, no account lookups and no published security certifications, and its human handover to your team is an early release, with customer routing still being tested. Look at Vapi first if you need:

• Phone numbers, inbound calls or outbound calling campaigns.
• A text chat mode as well as voice in its web widget.
• Your own choice of transcriber, model and voice, including custom models.
• Phone call transfers to a person, a department or another phone system.
• Integrations with Google Calendar, Google Sheets, Slack, GoHighLevel, Make or n8n.
• A vendor whose homepage states SOC 2, HIPAA and PCI compliance, with HIPAA-eligible data handling sold as a $2,000 a month add-on.

When does Kawl Now make more sense?

Kawl Now suits a SaaS team that wants voice support and sales conversations on its website without designing the agent. You get two agents with their own greetings, instructions, voices and knowledge, so product help and buying questions stay separate. Each call leaves a two-sided text transcript in the dashboard, and Kawl Now doesn’t store call recordings.

Both products have an MCP server. Vapi’s manages assistants, phone numbers and calls. Kawl Now’s lets a tool holding your workspace token add and approve knowledge, update agent settings, list conversations and get the embed code. Over MCP or the REST API, adding a source and approving it are separate calls, so a person can review what a coding agent drafts before callers hear it.

The fairest test is to give both the same docs, ask the same product questions and listen to the answers. We checked Vapi’s official pages on 8 October 2026, and features and prices can change.

Common questions