What do Vapi, Retell AI and others charge?
Most platforms charge by the minute or in credits, and several bill the model, the voice or the phone line on top. Kawl Now counts conversations instead. Prices change, so confirm them on the linked pages.
| Vendor | How it charges | Free to start | Listed price |
|---|---|---|---|
| Vapi | Hosting per minute, plus provider costs at their listed prices. | $5 of free credits. | $0.05 a minute for hosting. Success Packages from $29 a month. |
| Retell AI | Per minute for voice agents, per message for chat agents. | $10 of free credits, with no payment method. | $0.07 to $0.31 a minute for voice agents. |
| ElevenLabs Agents | Pay as you go or monthly plans with call minutes, plus model usage. | Free plan with 15 minutes of calls. | $0.08 a minute pay as you go, or from $6 a month for 75 minutes. |
| Chatbase | Monthly plans with message credits. | Free plan with 50 credits a month. | Voice from $150 a month, at 6 credits a minute plus model credits. |
| Fin (formerly Intercom) | Per outcome, such as a resolved conversation. | 14-day trial with no credit card. | $0.99 per outcome. Fin Voice is sold through sales. |
| Voiceflow | A plan fee plus usage credits. | Free plan with one-time credits. | Plan prices only in its app. Usage from $0.005 a message or $0.05 a phone minute, plus model and speech. |
| Kawl Now | Per conversation, each up to 10 minutes. | First 50 conversations per workspace, once. | No paid plan. Paid calls aren’t available yet. |
How does Vapi pricing work?
Vapi bills by the minute. It lists a pre-paid hosting fee of $0.05 a minute, and its FAQ says each minute also carries speech-to-text, the language model, text-to-speech and transport at each provider’s listed price, with no markup. New accounts get $5 of free credits.
Usage-only billing includes four concurrent calls and one Vapi phone number. Optional Success Packages add support and capacity: Core costs $29 a month, Pro costs 10% of your hosting fee with a $999 monthly minimum, and Premier is priced by sales. Extra call lines cost $10 a month each.
Vapi lists WebRTC and WebSocket transport as free, against $0.008 a minute for inbound Twilio calls. With Deepgram, OpenAI and ElevenLabs, its calculator estimated $82 to $129 a month for 1,000 minutes, or about $0.08 to $0.13 a minute.
How does Retell AI pricing work?
Retell AI lists $0.07 to $0.31 a minute for voice agents and from $0.002 a message for chat agents. New accounts get $10 in free credits and need no payment method until they buy a number. Its component table lists $0.055 a minute for voice infrastructure, from $0.015 for the voice, a rate for the model you choose and $0.015 a minute for a US Twilio number. Custom telephony carries no Retell call charge.
The knowledge base adds $0.005 a minute, with 10 knowledge bases free and $8 a month for each extra one. Twenty concurrent calls are included, each extra one costs $8 a month, and Retell numbers cost $2 a month, or $5 for toll-free. Calls are billed to the second, silence included. A call under 10 seconds where the agent opens with a dynamic message is billed as 10 seconds, and prompts over 4,000 tokens, counting the conversation and retrieved knowledge, scale up the billed duration.
What do ElevenLabs Agents, Chatbase, Fin and Voiceflow charge?
Each prices voice in a different unit:
- ElevenLabs Agents bills call minutes. The Free plan includes 15 minutes, the widget and the knowledge base. You can pay as you go at $0.08 a minute with no subscription, or choose a monthly plan from $6 for 75 minutes to $990 for 12,375 minutes, with extra minutes at $0.08. Model usage is billed on top, and your telephony provider bills you directly.
- Chatbase bills message credits. Voice starts on the Standard plan at $150 a month with 4,000 credits, and a voice session uses 6 credits a minute plus the model’s credits for each reply.
- Fin charges $0.99 per outcome. On another help desk there is a minimum of 50 outcomes a month, and on the Intercom Helpdesk you also pay for seats, from $19 a seat a month billed annually or $29 billed monthly. Fin Voice, its phone agent, is sold through sales: Fin’s pricing page describes custom pricing for select customers, while Intercom’s pricing page lists $1.99 per voice outcome.
- Voiceflow’s pricing page asks businesses to book a demo and offers agencies a free trial. Its docs describe a plan fee, add-ons and usage credits, with plan prices shown only in the app, and its self-serve credits table lists $0.005 a message and $0.05 a phone minute, plus model and speech usage.
What makes up a Vapi or Retell AI bill?
A per-minute price is rarely the whole bill. Vapi’s cost guide names the transcriber, the language model and the voice as the main parts, each billed in its own unit. Price these before you compare totals:
- A platform fee for every minute, such as Vapi’s $0.05 or Retell’s $0.055.
- The language model, billed by tokens. Long prompts and long calls cost more, because the conversation so far is sent with each request.
- Speech and voice, with speech-to-text billed by the audio minute and text-to-speech by the characters spoken.
- The phone line: numbers and carrier minutes. A call in the browser needs no phone carrier.
- Extras such as concurrent call lines, knowledge base and privacy add-ons, and support plans.
- Call length, which multiplies every per-minute charge, including time spent in silence.
What does Kawl Now cost?
Kawl Now gives each workspace its first 50 conversations free, once. Support calls, sales calls and your dashboard tests share the allowance, each browser call lasts up to 10 minutes, and up to three calls can run at once.
Paid calls aren’t available yet, so the waitlist asks only for your work details, no payment is collected and new calls stop once the 50 are used. Kawl Now runs the voice model and hosting, so there are no provider accounts to set up, and visitors talk in their browser, so there is no phone line to pay for. A two-minute question and a ten-minute walkthrough each count as one conversation.
Which pricing model suits a SaaS website?
Per-minute platforms such as Vapi and Retell AI suit teams that build their own agent, take phone calls or run high volumes. ElevenLabs Agents suits teams that want either per-minute billing or a monthly bundle of minutes, and credit or outcome pricing at Chatbase and Fin suits teams that already support customers in chat and email.
Kawl Now suits a SaaS team that wants to try spoken support and sales answers on its website before setting a budget. Put real customer questions through the free conversations and read the transcripts. If you need phone calls, more volume or a paid service level today, the platforms above offer them.
Common questions
How much does Vapi cost per minute?
Vapi charges $0.05 a minute for hosting, plus speech-to-text, the model, the voice and transport at each provider’s listed price, after $5 of free credits. On 8 October 2026, its calculator estimated $82 to $129 a month for 1,000 minutes with Deepgram, OpenAI and ElevenLabs, about $0.08 to $0.13 a minute.
What is included in Retell AI’s per-minute price?
Retell AI lists $0.07 to $0.31 a minute for voice agents. Its component table lists $0.055 a minute for voice infrastructure, from $0.015 for the voice and a rate for the model you choose, plus $0.015 a minute for a US Twilio number. New accounts get $10 of free credits.
Which voice agent vendors don’t publish their prices?
On 8 October 2026, Voiceflow showed plan prices only inside its app and asked businesses to book a demo, although its credits table listed usage rates. Fin sold Fin Voice through its sales team: Fin’s pricing page described custom pricing, while Intercom’s pricing page listed $1.99 per voice outcome. Vapi, Retell AI, ElevenLabs Agents and Chatbase list prices publicly, and Kawl Now publishes its free allowance.
How does Kawl Now’s free allowance compare with per-minute platforms?
Kawl Now counts conversations instead of minutes. Each workspace gets its first 50 free, shared by support, sales and tests, and each browser call lasts up to 10 minutes. Paid calls aren’t available yet, so there is no per-minute rate and new calls stop once the 50 are used.