AI Voice Agents in Brazilian Portuguese, Built for How Brazil Actually Talks
Frenti designs, builds, and ships production voice AI that holds natural conversations in real Brazilian Portuguese — regional accents, human turn-taking, and the integrations your business actually runs on. Not a no-code template you outgrow in a month.
Founder-led, with 25+ years across enterprise software and healthcare IT, and bilingual EN/PT delivery. We've built voice pipelines end-to-end — including a working bilingual assistant that runs speech-to-text, reasoning, and natural voice in a single low-latency loop (Groq · Claude · ElevenLabs).
What is a Brazilian Portuguese AI voice agent?
A Brazilian Portuguese AI voice agent is a software system that holds natural, spoken conversations in pt-BR — over the phone, WhatsApp, or in an app — to handle tasks like support, sales qualification, scheduling, and reminders. It combines speech recognition tuned for Brazilian accents, a language model that understands intent and context, and a voice that sounds genuinely Brazilian. A custom-built agent (versus an off-the-shelf tool) connects directly to your CRM, ERP, or scheduling system and can be tuned for your industry's vocabulary, tone, and compliance requirements.
Why build a custom agent instead of using a no-code tool
No-code voice platforms are a great way to launch a first experiment. Most teams hit their limits fast — and that's the moment to build.
Real Brazilian Portuguese, not translated English
Most tools bolt pt-BR onto an English-first product. We build for the language itself: regional accents (paulista, carioca, nordestino), formality that fits the caller (você vs. o senhor/a senhora), natural gírias, and numbers, dates, and currency spoken the way Brazilians actually say them.
Your integrations, your stack, your code
The agent connects to the systems you already run — CRM, ERP, EHR, scheduling, payments — and you own the codebase. No black box, no per-minute lock-in you can't engineer around.
Tuned for natural conversation
We engineer for low latency, clean turn-taking, and barge-in so callers can interrupt and be understood — the difference between “obviously a bot” and a conversation that flows.
Compliance-aware from day one
We architect for LGPD (Brazil) and, where it applies, HIPAA and PCI patterns — drawing on deep healthcare-IT and enterprise-architecture experience.
WhatsApp-first, because Brazil is
Phone is only half the picture in Brazil. We build voice and WhatsApp into one agent so customers reach you where they already are.
A partner, not a platform
You get an engineering team that scopes the problem, builds the system, and ships it — then hands off clean or stays on to operate it. Your call.
Voice agents that do real work in Brazilian Portuguese
- Inbound support & reception — answer, route, resolve, and escalate, 24/7
- Outbound sales & lead qualification — reach lists, qualify, and book the meeting
- Appointment scheduling & reminders — book, confirm, reschedule, and cut no-shows
- Billing & collections (cobrança) — payment reminders and negotiation flows, handled with the right tone
- Surveys, NPS & feedback — collect responses at scale without a call center
- WhatsApp + voice in one agent — meet Brazilian customers on their default channel
The Brazilian Portuguese difference
Generic voice AI treats Brazilian Portuguese as a translation problem. It isn't. A caller in Salvador doesn't sound like one in São Paulo. “O senhor pode confirmar?” lands differently than “Você pode confirmar?” — and using the wrong one quietly costs you trust. Brazilians say phone numbers, dates, and R$ amounts in patterns a model has to be tuned for, not just translated into.
Frenti is founder-led by a Brazilian-American with 25+ years building software and AI systems on both sides of the border — and a team fluent in the language, the channels (WhatsApp is not optional), and the way business actually gets done in Brazil. We build agents that sound like they belong.
A build that proves the loop: we built a bilingual voice assistant that listens, reasons, and speaks back in natural conversation — speech-to-text through Groq, reasoning with Claude, voice through ElevenLabs, wired into one low-latency loop. It's the same pipeline we deploy for client agents.
Brazilian-American, 25+ years building software and AI systems across enterprise and healthcare IT — on both sides of the US ↔ Brazil border. More about Frenti →
Consult → build → ship
Consult & scope
We map your call flows, success metrics, and constraints, then hand you a fixed scope and proposal. You know exactly what you're getting before we write a line of code.
Build
We build the voice pipeline, the conversation design, your integrations, and an evaluation harness that scores agent responses for quality before they ever reach a customer — so the agent gets better, measurably.
Ship
We deploy, monitor, and iterate on real conversations. Then we hand off a clean, documented codebase — or stay on to run and improve it. Your choice.
Best-in-class components, tuned for your use case
Assembled and tuned for your use case — not locked to one vendor.
- Speech-to-text
- Whisper, Deepgram
- Reasoning
- Claude, GPT
- Voice (TTS)
- ElevenLabs
- Telephony
- Twilio
- Channels
- Phone, WhatsApp Cloud API, web
- Integrations
- your CRM / ERP / EHR / scheduling / payments
We're provider-agnostic — if a better model or voice ships next month, we can swap it in.
Frequently asked questions
How is a Brazilian Portuguese AI voice agent different from an English one that's been translated?
A translated agent often misses regional accents, the right level of formality, and the way Brazilians naturally say numbers, dates, and currency. We build for pt-BR from the ground up, so the agent sounds native rather than dubbed.
Can it handle regional Brazilian accents?
Yes. We tune speech recognition and voice selection for Brazilian accents and can target a specific region (for example, paulista or nordestino) when your audience calls for it.
Should I build a custom agent or use a no-code tool like Retell or Vapi?
No-code tools are great for a quick first test. Build custom when you need real pt-BR nuance, deep integrations, data and compliance ownership, or better unit economics at scale. We often help teams graduate from a no-code prototype to a system they own.
Does it work with WhatsApp?
Yes. Brazil is WhatsApp-first, so we build voice and WhatsApp into a single agent that meets customers on the channel they already use.
Is it LGPD and HIPAA compliant?
We architect for LGPD by default and build to HIPAA and PCI patterns when your use case requires it, drawing on deep healthcare-IT experience.
How long does it take to build and ship?
Most agents go from scoping to a working, deployed agent in weeks, not months — exact timeline depends on the call flows and integrations, which we lock down during scoping.
What does it cost?
Each build is scoped to your use case, so pricing is set in the proposal after a short scoping call — no per-minute platform lock-in.
Ready to put a real Brazilian Portuguese voice on your business?
Book a scoping call. We'll map the use case, the channels, and the integrations — and you'll leave with a clear scope and a fixed proposal.