Meta Tech ProviderCompared · France
Voice AI platforms compared, for businesses in France
For a business in France the choice comes down to five checks: whether you can keep your number, whether the agent speaks French and handles vous, how outbound calls sit with the canvassing rules that changed on 11 August 2026, what the CNIL says about recording and what health data needs, and whether WhatsApp is part of the same agent. This page puts ThinnestAI beside three developer platforms on those checks, with the sources and the date we read them.
What to check
Five things to check before you choose, in France.
Put the last column to every supplier you are weighing, ThinnestAI included.
| Check | Why it matters in France | ThinnestAI | Ask any supplier |
|---|---|---|---|
| A number you can keep | An artisan, a small clinic or a family restaurant often has one phone and no one free to answer it, above all through the long lunch break. | Connect the number from your own Twilio, Telnyx or Plivo account, or forward calls to one; forwarding at lunchtime or after hours is the easiest first step. We don't sell French numbers. On Telnyx, outbound calls go only to the countries switched on in your voice profile, so add France before you call out. | Can the agent take my number only at lunchtime and after hours, and what happens to the number if I leave? |
| French and vous | A Dutch holiday guest in the Dordogne or an Arabic-speaking client in Marseille may ring a French firm, and callers expect to be addressed with vous. | French and English are among the 50 voice languages, and so are Dutch and Arabic, which are voice only. We claim French, not a regional variety, so we promise nothing for a Canadian or Belgian accent, for Breton, Corsican or Occitan, or for an Arabic dialect. Vous is set in the instructions you write. | Can I hear the French voice before I commit, and which of my guests' languages work on the phone and in chat? |
| Outbound calling rules | Since 11 August 2026, according to the CNIL and the DGCCRF, commercial canvassing of a consumer by phone needs prior consent, and the Bloctel opt-out list has ended. Calls to consumers who consented are allowed Monday to Friday, 10:00 to 13:00 and 14:00 to 20:00 (read 25 October 2026). | You set calling hours per campaign on the called person's clock, so you can match those hours, and you keep your own do-not-contact list. The agent does not collect or check consent. We could not verify how an AI voice agent is classified, so plan on the stricter view. | Can I limit a campaign to the permitted hours, and where is each consent kept? |
| Recording and health data | The CNIL says people on the line must be told in two steps, a sentence at the start and a way to the full notice, and that recording should be occasional. According to the ANS, article L1111-8 of the Public Health Code requires a host of health data on digital media to hold an HDS certificate. | Recording is a per-agent switch that stays off until you turn it on, and the opening line is yours to write. We claim no HDS certificate and have not verified whether a clinic's appointment calls fall inside that scope, so ask your adviser before health calls go near the agent. We make no claim that the product meets any local law. | Is recording off by default, and do you hold an HDS certificate if my calls touch health data? |
| WhatsApp and billing | The CNIL says prospecting by electronic means rests on prior consent for consumers, with an exception for your own customers. The page we read lists e-mail, SMS-MMS and automated calls and does not mention messaging apps. | One agent answers the phone, WhatsApp and website chat, with a shared inbox where your team can take over. Whether a WhatsApp marketing message counts is for your adviser. Billing is in US dollars by card; there is no euro billing. | Do the phone and WhatsApp share one customer history, and in which currency will I be invoiced? |
Side by side
ThinnestAI and three developer platforms, for France.
Cells about other companies come from their own documentation, read on 25 October 2026.
| ThinnestAI | Vapi | Retell AI | Bland AI | |
|---|---|---|---|---|
| What it is | A managed agent with a shared inbox, campaigns and a call log | A developer platform that connects speech, language-model, voice and telephony providers | A developer-first voice agent platform | Voice agents with Pathways branching flows |
| Channels | Phone, WhatsApp, website chat, Telegram: one agent, one memory | Voice-focused | Voice and chat | Voice and SMS |
| Price shape | Flat per-minute rate — see pricing | A platform fee per minute plus the providers you choose | Priced per component | Bundled per connected minute |
| Phone numbers in France | Bring a number you own on Twilio, Telnyx or Plivo; we don't sell French numbers | Free numbers use US area codes; outbound calls and other countries use a number imported from a carrier such as Twilio or Telnyx | Sells numbers in the US and Canada only; other countries use your own provider | Sells numbers in the US and Canada; for other countries its documentation says to contact support |
| Languages for France | Voice in French and English (American, British and others), plus German, Spanish, Italian, Portuguese, Dutch and Arabic; chat replies in 37 languages, French and English among them; Arabic and Dutch voice only | Depends on the speech and voice providers you choose | Depends on the voice and speech providers; the dashboard greys out unsupported choices | Its site states 40+ languages; check yours on a test call |
| Agent setup | Tabbed settings, no flow canvas | Visual Workflows builder | Conversation Flow builder | Pathways branching flows |
| Shared inbox and human takeover | Yes | No | Not checked | Not checked |
| Billing | US dollars, by card | US dollars | US dollars | US dollars |
Read on 25 October 2026 from each company's own pages: Vapi (phone calling, multilingual); Retell AI (purchase a number, language); Bland AI (purchase a number, site). Products change; check each page before you decide. Prices are not compared here: ours are on the pricing page, and theirs are on theirs.
Other options
Other kinds of supplier in France.
Kinds of supplier, not companies. Each is the right call for someone.
A staffed secretarial service
People answer in French, take the message and can judge a worried caller. It is the better call when every caller needs a person from the first word, as in many clinics. It cannot take a hundred calls at once or ring a list of leads.
A telephone operator's hosted switchboard
A French telephone operator can supply the number, a menu and call forwarding in one contract. It routes calls where you send them. It does not understand a question, book a visit or leave you a transcript to read.
Building on a developer platform
If your team can build, a developer platform lets you join speech, language-model, voice and telephony providers your own way. You gain control and spend build time, and the testing, the inbox and the invoices for each part are yours to run.
Plainly
Who should pick what.
ThinnestAI fits when
- You run an artisan firm, restaurant or garage whose phone goes unanswered at lunch, and want the job, address and urgency noted for a callback.
- You host foreign guests who ring in English, Dutch or Arabic, and want each answered in their own language on the phone.
- You want the phone and WhatsApp handled by one agent, with a shared inbox where your staff can take over.
Something else fits better when
- Your calls touch health data and you need a host with an HDS certificate. We claim none, so a supplier that holds one, or your own staff, is the better call.
- Your callers speak Canadian or Belgian French, Breton, Corsican or an Arabic dialect. We make no promise for those, and a human team that speaks them serves you better.
- Your procurement team requires a certificate beyond the HDS one, or your engineers want to choose every provider by hand. We claim no certification, and a developer platform gives that choice.
Questions
Common questions.
Can I keep my French phone number?
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Do the other platforms sell French numbers?
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Does the agent check Bloctel?
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Can the agent speak Canadian or Belgian French?
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Test it on your own calls in France.
Create an agent, give it your own information, and ring it from your browser before you connect a number. Then put the same test to the others.