The network for creativity
Join 1.25M professional creatives like you
Connect with clients, get discovered, and run your business 100% commission-free
Creatives on Contra have earned over $150M and we are just getting started
Back to feedPost
AI Voice Agent: Autonomous Calling & Support
A US-based service provider needed an ultra-low-latency autonomous AI Voice Calling Agent to handle inbound customer qualification, resolve routine queries, and automatically book calendar appointments 24/7 without manual front-desk staff.
Key Challenges:
High conversational latency causing unnatural pauses and awkward caller overlap.
Managing interruptions dynamically when a user speaks while the AI is responding.
Live calendar slot booking and syncing caller records instantly with the client's CRM.
Technical Implementation & Solution:
• Telephony & Audio Pipeline: Configured bi-directional WebSocket audio streams linking Twilio Voice directly to FastAPI backends.
• Ultra-Low Latency Voice Stack: Integrated Deepgram Nova-2 for real-time speech-to-text (STT), OpenAI GPT-4o-mini for sub-second intent reasoning, and Cartesia / ElevenLabs for natural, emotional voice synthesis.
• Interruption Handling: Built a voice activity detector (VAD) to instantly pause AI speech playback when the caller speaks mid-sentence.
• Tool Execution & Integrations: Integrated dynamic function calls directly into Google Calendar and HubSpot CRM to lock meeting slots during live conversations.
Results & Impact:
• Reached an average response latency of under 650ms, producing natural human-like voice flow.
• Automated 70% of inbound calls, cutting front-desk operating expenses significantly.
• Successfully scheduled qualified leads directly into CRM with zero human intervention.
Strong work. For teams expanding voice agents into Brazil, the biggest production risks go beyond ASR and TTS: interruption timing, regional phrasing, escalation, compliance, and silence handling. I specialize in PT-BR voice-agent evaluation and would be glad to compare frameworks if you explore multilingual coverage.
The network for creativity
Join 1.25M professional creatives like you
Connect with clients, get discovered, and run your business 100% commission-free
Creatives on Contra have earned over $150M and we are just getting started
Related posts
As a freelancer, keeping everything that runs your business organized gets harder as the business grows. Money coming in and going out, client details, project files, new leads, job applications. It adds up fast, and it gets overwhelming.
So I built Rendr, a personal AI-powered macOS app that keeps my whole business in one place, so I spend less time managing and more time designing.
What it does:
• Command Center: a daily briefing of what needs my attention, and why
• Pipeline: tracks leads from first contact to signed work, with AI-drafted proposals and follow-ups
• Clients: every client's history, files and notes in one hub
• Money: payments, open invoices and payouts, synced from Contra
• Job search: Contra jobs plus open job boards, matched to my skills and rate
• Applications: tailored resumes, cover letters and pitches, written only from my real experience
• Site audits: reviews a prospect's website and turns the findings into a pitch email in one click
• Work library: tagged portfolio files, with the best samples suggested for each pitch
• Backups: automatic, every day, to Dropbox
It runs on my Mac, and it never sends an email, invoice or message on its own. I review everything first.
Still building, with more to come.
Looks amazing..is it a native app ?
🎙️ 𝗜 𝗷𝘂𝘀𝘁 𝗯𝘂𝗶𝗹𝘁 𝗮 𝗩𝗼𝗶𝗰𝗲 𝗔𝗜 𝗥𝗲𝗰𝗲𝗽𝘁𝗶𝗼𝗻𝗶𝘀𝘁 𝗳𝗼𝗿 𝗮 𝗿𝗲𝗮𝗹 𝗿𝗲𝘀𝗼𝗿𝘁 𝗶𝗻 𝗕𝗮𝗻𝗴𝗹𝗮𝗱𝗲𝘀𝗵 — 𝗮𝗻𝗱 𝗶𝘁 𝘄𝗼𝗿𝗸𝘀.
No missed calls. No manual order-taking. No “please hold.”
Just AI.
Here's what it does 👇
📞 Customer calls → 𝗔𝗜 𝗽𝗶𝗰𝗸𝘀 𝘂𝗽 𝗶𝗻𝘀𝘁𝗮𝗻𝘁𝗹𝘆
🗣️ Speaks naturally in 𝗕𝗮𝗻𝗴𝗹𝗮 & 𝗘𝗻𝗴𝗹𝗶𝘀𝗵
🍽️ Takes food orders → saves to Google Sheets → alerts owner on Telegram
🏨 Books rooms & cottages → same system
📅 Checks event availability in real-time
📋 Logs every inquiry — automatically
𝗧𝗵𝗲 𝘁𝗲𝗰𝗵 𝘀𝘁𝗮𝗰𝗸 𝗜 𝘂𝘀𝗲𝗱:
→ 𝗩𝗮𝗽𝗶 — Voice AI phone agent
→ 𝗻𝟴𝗻 — Automation backbone (1 webhook, 5 smart branches)
→ 𝗚𝗼𝗼𝗴𝗹𝗲 𝗦𝗵𝗲𝗲𝘁𝘀 — Live database
→ 𝗧𝗲𝗹𝗲𝗴𝗿𝗮𝗺 𝗕𝗼𝘁 — Instant owner alerts
→ 𝗚𝗣𝗧-𝟰𝗼 — Brain of the agent
𝗧𝗵𝗲 𝗿𝗲𝘀𝘂𝗹𝘁?
The resort owner gets instant Telegram notifications for every order and booking — while the AI handles the entire conversation.
No extra staff. No missed leads. 24/7.
💼 𝗕𝘂𝘀𝗶𝗻𝗲𝘀𝘀 𝗼𝘄𝗻𝗲𝗿𝘀 — 𝘁𝗵𝗶𝘀 𝗶𝘀 𝗽𝗼𝘀𝘀𝗶𝗯𝗹𝗲 𝗳𝗼𝗿 𝘆𝗼𝘂𝗿 𝗯𝘂𝘀𝗶𝗻𝗲𝘀𝘀 𝘁𝗼𝗼:
• Hotels & Resorts
• Restaurants
• Clinics
• Showrooms & Retail Businesses
• Service-based Businesses
If your business receives regular calls, inquiries, bookings, or customer orders, an AI-powered automation system can handle a large part of that process — 24/7.
🚀 𝗜’𝗺 𝗰𝘂𝗿𝗿𝗲𝗻𝘁𝗹𝘆 𝘁𝗮𝗸𝗶𝗻𝗴 𝗼𝗻 𝗳𝗿𝗲𝗲𝗹𝗮𝗻𝗰𝗲 𝗔𝗜 𝗔𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗼𝗻 𝗽𝗿𝗼𝗷𝗲𝗰𝘁𝘀.
📩 DM me or leave a comment below — let’s talk about how I can automate your business.
𝗪𝗵𝗮𝘁 𝗜 𝗯𝘂𝗶𝗹𝗱:
✅ AI Voice Receptionists
✅ AI Chatbots for WhatsApp, Facebook & Instagram
✅ Business Automation with n8n & Make
✅ Lead & Booking Automation
✅ Data Analytics & Business Dashboards
I’m building practical AI automation systems that connect AI + business data + real workflows — not just demos.
Open to freelance projects, collaborations, and full-time opportunities.
#AIAutomation #VoiceAI #n8n #Vapi #BusinessAutomation #AI #Automation #DataAnalytics #BangladeshTech
Having the voice AI write every order straight to Google Sheets and fire a Telegram alert removes the manual data entry step.
Tessira — AI Voice Studio Dashboard
Tessira is AI voice studio where creators direct voice-overs the way a director works with an actor.
Instead of endless settings, the whole process lives on one canvas:
— Voice library: pick a voice or clone your own from 30 seconds of audio
— Node pipeline: Script → Voice Clone → Denoise → Mixer → Mastering
— Live preview: waveform, takes and one-click Enhance
— Voice directing: describe the tone in plain words and the voice follows
Deep navy glass UI, a calm interface for focused creative work.
Have a project in mind?
Looks perfect!