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I need an end-to-end AI voice solution that can place outbound cold calls, introduce my company, and present clear product details while responding naturally to prospects. Beyond the opening pitch, the bot should handle basic objections, capture interest signals, and transfer or schedule a follow-up with a human rep when requested. I will supply the product brief, persona notes, and a draft script. You will: design the conversational flow, choose or fine-tune speech-to-text and text-to-speech models, connect everything to a telephony provider such as Twilio or an equivalent SIP gateway, and give me simple controls to launch and monitor campaigns. Deliverables • Fully functional voice-bot application with source code and deployment guide • API or webhook endpoints to push phone lists and pull call results • Live dashboard or CLI for transcripts, recordings, and call outcomes • Documentation on setup, editing product-detail prompts, and scaling to higher call volumes Acceptance criteria • Sub-1.5 s response latency during live calls • ≥90 % keyword accuracy on product-related questions in test scenarios • Reliable handoff to a human agent on DTMF “0” or a spoken request • Out-of-the-box support for US and Canadian numbers If you’ve built AI callers for sales before—especially cold outreach—share a quick demo or case study and indicate your timeline to deliver. Let’s launch this quickly.
Project ID: 40191258
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46 freelancers are bidding on average ₹201,455 INR for this job

Hello, I’ve gone through your project details, and this is something I can definitely help you with. With 10+ years of experience in mobile and AI development, I understand the intricacies of building effective AI voice bots for cold outreach. My background includes designing conversational flows, fine-tuning speech-to-text and text-to-speech models, and integrating solutions with telephony providers like Twilio. I focus on creating seamless experiences that ensure sub-1.5 second response latency and high keyword accuracy. You can expect a fully functional voice-bot application, complete with source code and deployment guides, and an intuitive dashboard for monitoring campaigns. Here is my portfolio: https://www.freelancer.in/u/ixorawebmob I’m keen to understand more about your specific requirements. Could you clarify: 1. What is your expected timeline for completion? What is your expected timeline for completion? Let’s discuss over chat! Regards, Arpit Jaiswal
₹222,000 INR in 1 day
7.4
7.4

With a robust background in AI development, mobile application creation, and professional writing, I'm the perfect match for your tailored project. I've excelled in creating data-driven chatbot solutions that would not only meet but surpass your expectations. Having worked with OpenAI and LangChain, I'm not just up-to-date but experienced in working with the best automation tools right now. I understand the importance of conversational flow and capturing interest signals during cold calls. I can create an efficient minimalist interface that will allow you to easily manage your campaigns while providing detailed documentation on setup and scaling. My work focuses on ensuring high-performance without sacrificing user-friendliness, just what you need for smoothly conducting those crucial calls. In summary, as an AI-obsessed mobile developer with profound skills in technology integration and solution-based content creation, I can provide a "one-stop solution" for all your project needs while guaranteeing top-notch performance. Let's launch this quickly and start revolutionizing your sales pursuits seamlessly!
₹150,000 INR in 7 days
5.2
5.2

As an entrepreneur that began coding at the tender age of 10, I have cultivated my passion for programming into a thriving IT business. With my 14+ years of experience and verified reputation, I lead a team of 25+ skilled developers at Procode It Services, excelling in delivering tailored cutting-edge solutions that match client-specific needs. To ensure the complete success of your "AI Voice Bot for Cold Calls" project, we've successfully strategized our work process which guarantees maximum satisfaction. Firstly, we deeply understand your requirements, creating comprehensive Dataflow diagrams to visualize the perfect execution. Secondly, our team fosters consistent communication with clients through regular demo sessions, allowing for adjustments and updates as required. Lastly, we provide high-quality, bug-free results within your timeframe as promised. In terms of relevant expertise, we have an edge here too. While our core strength lies in Mobile App Development (Android | iPhone), this very project requires a sophisticated understanding of AI technologies and implementation; something we've got profound experience and success in. We have previously used similar applications like ChatGPT for streamlining customer interactions and believe this will greatly benefit your cold-calling project. Join hands with us and together we can bring life to your idea, delivering the desired outcome with sheer client satisfaction!
₹200,000 INR in 20 days
5.8
5.8

With a decade-long background in mobile app development, especially with Android platforms, I'm thrilled to apply my expertise to this AI Voice Bot project. My team and I have built numerous applications similar to what you're requesting and possess the necessary skills to create a highly-functional, accurate, low-latency system tailored to your needs. Our strong command over different programming languages, such as Java and PHP5, would enable us to streamline and customize the conversational flow of your AI voice bot efficiently. In terms of scalability, we have experience with handling larger call volumes and can ensure a reliable handoff capability for seamless human rep takeovers. Additionally, our understanding in **Mobile Phone** service will enable easy connection between the AI voice bot and telephony providers like Twilio or SIP gateway for outgoing calls. For monitoring purposes, we will provide either an API or webhook endpoints for tracking call outcomes. Trust me with your project, and I guarantee it will exceed your expectations while aligning perfectly with your deployment timeline. Thank you for considering our services; I look forward to discussing this project further with you!
₹200,000 INR in 7 days
5.3
5.3

Hey, I’ve reviewed your requirements and understand you’re looking for a complete AI powered outbound voice solution that can cold call prospects, introduce your company, clearly explain product details, handle basic objections, and intelligently qualify interest before handing off to a human rep when needed. The focus is on natural conversations, low latency, and reliable sales handoff. I can design and build an end to end AI voice bot using a proven stack with Twilio or a compatible SIP gateway, paired with high accuracy speech to text and natural text to speech models tuned to your product and persona. I’ll structure the conversational flow to follow your script while allowing flexible responses, objection handling, and intent detection, including instant transfer or scheduling when the prospect asks for a human or presses 0. You’ll receive clean, well documented source code, API or webhook endpoints to push phone lists and retrieve call outcomes, and a simple dashboard or CLI to monitor live calls, transcripts, recordings, and results. The system will be optimized for sub 1.5 second response times and will support US and Canadian numbers out of the box. I’ve worked on AI driven voice and automation systems focused on sales and lead qualification, and I’m confident I can meet your acceptance criteria and deliver quickly. Best regards, Muhammad Adil Portfolio: https://www.freelancer.com/u/webmasters486
₹200,000 INR in 14 days
4.5
4.5

With more than 8 years in data analytics and science, I bring a unique set of skills to the table which will enable us to elevate your AI voice bot project to new heights. My expertise with machine learning and data science allows me to understand and manipulate complex datasets - a crucial ability when it comes to designing the conversational flow of your AI voice bot and fine-tuning its speech-to-text and text-to-speech models. You can rely on my experience using various data visualization tools like Power BI, Tableau, Looker, Google Data Studio, and Python's Plotly / Dash for providing you with a live dashboard that would give you access to detailed transcripts, recordings, call outcomes, allowing you to monitor campaigns. This well-rounded knowledge of mine extends also in providing simple controls that can help you in tasks such as launching and monitoring campaigns wherein we can utilize APIs or webhook endpoints. Given my track record in optimizing operations and improving customer understanding predicated upon data solutions I've provided across finance, healthcare, e-commerce, and SaaS industries, I pledge not only delivering a fully functional voice-bot application that meets your immediate needs but also one that is dependable even as scaling needs winter calls. Let’s start putting your valuable data into action!
₹150,000 INR in 25 days
4.1
4.1

Hi, I’m Karthik, a senior AI & voice systems engineer with 10+ years of experience building production-grade conversational AI, including outbound AI callers for sales and lead qualification. I can deliver a complete AI voice bot that places cold calls, presents your product clearly, handles basic objections, detects interest, and seamlessly hands off to a human agent when requested. How I’ll build it: Conversation & AI • Conversational flow designed from your script & personas • Objection handling, intent detection, interest capture • Follow-up scheduling or live transfer on DTMF “0” / voice request Voice Stack • Low-latency STT/TTS selection or fine-tuning • Natural-sounding voice with ≥90% keyword accuracy • Optimised prompts to maintain <1.5s response time Telephony & Ops • Twilio or SIP gateway integration • US & Canada number support • Call recording, transcripts, and failover handling Control & Scaling • APIs/webhooks to push call lists and fetch results • Dashboard or CLI for monitoring outcomes • Documentation for editing prompts and scaling volumes Deliverables: ✔ Voice-bot app + source code ✔ Deployment guide ✔ APIs/webhooks ✔ Monitoring dashboard/CLI ✔ Full documentation I’ve built AI cold-calling systems before and can share a demo/case study. Ready to move fast—happy to propose a clear timeline. – Karthik
₹249,900 INR in 7 days
3.9
3.9

✔ I deliver 100% production-ready AI systems Workflow Diagram Product Brief & Script ⟶⟶ Conversation Flow Design ⟶⟶ STT/TTS Model Selection ⟶⟶ AI Voice Logic Development ⟶⟶ Telephony (Twilio/SIP) Integration ⟶⟶ Objection Handling & Handoff Logic ⟶⟶ Dashboard & API Setup ⟶⟶ Testing & Optimization ⟶⟶ Deployment & Documentation Key Highlights ✔ End-to-End AI Voice Caller — outbound cold-calling bot that introduces your company and presents product details clearly. ✔ Natural Conversation Engine — human-like dialogue flow that responds intelligently to prospects and adapts tone in real time. ✔ Objection Handling Logic — handles common pushbacks, qualification questions, and interest signals automatically. ✔ Human Agent Handoff — instant transfer on DTMF “0” or spoken requests to a live sales rep. ✔ Telephony Integration — Twilio or SIP gateway setup for scalable outbound calling in US & Canada. ✔ Speech AI Optimization — fine-tuned speech-to-text and text-to-speech models to meet ≥90% accuracy target. ✔ Low-Latency Performance — optimized pipeline to maintain sub-1.5 second live response latency. ✔ Campaign Control Panel — live dashboard or CLI to launch campaigns, track calls, and monitor results. ✔ API & Webhooks — endpoints to push call lists and retrieve transcripts, call outcomes, and analytics. Best Regards, Asad AI Voice Systems Developer | Conversational AI | Telephony Automation
₹160,000 INR in 30 days
3.7
3.7

Hi, I would love to create a outbound calling agent for your business. I have already developed many calling agents not just simple ones but WebRTC based ensuring low latency. I can give you the lowest per minute cost of $0.06. I have read all your requirements and my expertise fully align with them and I totally understand your requirements. I’m ready to start immediately and can guarantee a timely delivery without sacrificing quality. Let’s build something that helps your business scale. Looking forward to hearing from you! Best regards, Haseeb.
₹150,000 INR in 7 days
3.2
3.2

Hi, I can do this. I have extensive experience in developing AI voice solutions for sales, including cold outreach applications. I will design a seamless conversational flow, fine-tune speech models, and integrate with a telephony provider like Twilio. My approach ensures a natural interaction with prospects, effectively handling objections and scheduling follow-ups. Deliverables will include a fully functional voice-bot application with source code, API endpoints for phone lists and call results, and a live dashboard for monitoring. I will ensure sub-1.5s response latency, ≥90% keyword accuracy, and reliable handoff to human agents. I can deliver this project within 4-6 weeks, depending on the complexity of the product details. Let’s collaborate to launch this quickly and effectively. Best, Ashnasajid
₹200,000 INR in 3 days
2.4
2.4

Building a conversational AI voice bot for outbound calls that feels natural and handles objections is exactly the kind of challenge I enjoy. From what I understand, your goal is to have an end-to-end solution that can place cold calls, introduce your company, present product details, respond intelligently to prospects, and hand off to a human when needed. You also need low-latency responses, high keyword accuracy, US/Canada number support, and simple campaign controls. I’ve designed and deployed AI-driven voice applications integrating speech-to-text, text-to-speech, and telephony providers like Twilio, with dashboards for monitoring call outcomes. My approach is to map the conversational flow carefully, fine-tune models for product-specific responses, and implement reliable human handoff logic while keeping deployment and scaling straightforward. To get started efficiently, it would help to see your draft script and persona notes, so I can design the flow and set up initial call campaigns quickly. I can also provide a short demo of a similar AI caller I’ve built to show expected performance. Looking forward to making this voice bot fully functional and campaign-ready.
₹200,000 INR in 30 days
2.3
2.3

Hello, I understand you need a fully functional AI voice system capable of handling outbound cold calls, delivering product pitches, managing objections, and seamlessly transferring leads to human agents. I specialize in designing intelligent conversational AI pipelines integrated with telephony platforms like Twilio, capable of real-time speech-to-text and natural text-to-speech responses. Solution Highlights: Conversational Flow Design: Script and persona fully mapped, with branching logic for objections, interest signals, and human handoff. AI Engine: Fine-tuned speech-to-text and text-to-speech models for sub-1.5 s response latency and ≥90% keyword accuracy on product-related questions. Telephony Integration: Fully integrated with Twilio or SIP gateways; supports US and Canadian numbers. Campaign Management: Live dashboard or CLI for monitoring transcripts, recordings, call outcomes, and scheduling follow-ups. Automation & API: Webhooks/API to push phone lists, retrieve results, and scale campaigns seamlessly. Deliverables: Source code with deployment guide Configurable conversational AI engine Monitoring dashboard and reporting tools Documentation for editing prompts, scaling, and maintaining campaigns Timeline: I can deliver a fully operational system within 3 weeks, including testing on live numbers and campaign dashboard setup. Let’s launch this AI voice solution quickly and get your outreach fully automated. Best regards,
₹200,000 INR in 7 days
2.3
2.3

Hello, Thank you for sharing the detailed requirements. I have experience building AI-powered voice systems for outbound calls and can deliver an end-to-end solution that handles introductions, product explanations, basic objections, and smooth handoffs to human agents. Approach: Design conversational flow from your provided script and persona notes Select or fine-tune speech-to-text and text-to-speech models for natural interaction Integrate with Twilio or equivalent SIP gateway for outbound calling Implement triggers for DTMF “0” or spoken requests to seamlessly hand off to a human Build a dashboard or CLI for monitoring transcripts, recordings, call outcomes, and campaign management Provide API/webhook endpoints to push phone lists and fetch call results Deliverables: Fully functional AI voice-bot application with source code and deployment guide Monitoring dashboard with transcripts, recordings, and outcomes Documentation for setup, editing prompts, and scaling campaigns I can ensure sub-1.5s response latency, ≥90% keyword accuracy, and reliable support for US and Canadian numbers. I’m happy to share demos of previous AI caller projects and discuss a timeline for quick launch. Looking forward to your thoughts and next steps. Best regards, Rsj ,
₹150,000 INR in 15 days
1.3
1.3

Hi there, I am an AI & Automation Engineer with experience in building high-performance voice agents. I understand that for cold calling, Sub-1.5s latency is the difference between a conversion and a hang-up. I can build this end-to-end solution using a "Fast-Response" architecture. My Technical Strategy for your Outbound Bot: Voice Stack: I’ll utilize Vapi or Retell AI (or a custom Deepgram + Groq + ElevenLabs stack via WebSockets) to ensure near-instant responses. Brain (LLM): Implementing GPT-4o-Realtime or a fine-tuned Llama 3 for natural objection handling and interest capture. Telephony: Seamless integration with Twilio or Vonage for US/Canada outbound calling and DTMF/Spoken transfer logic. The Dashboard: A dedicated portal to upload CSV lists, track live transcripts, and capture call outcomes (Interested/Follow-up/DNC). Scaling: Containerized backend (Docker) to handle concurrent calls without dropping quality. Why me? I focus on "Human-like" flow—using filler words (um, ah) and interruptible streams so the bot feels natural. Regarding my 2.8 rating*: This was a temporary issue with a scammer (already cleared by support). I am happy to provide a Live Demo Call to on freelancer right now to prove the sub-1.5s latency. Should we start with the Twilio SIP configuration or the conversational flow design first? Best regards, Himanshu
₹180,000 INR in 7 days
0.5
0.5

Hello Dear, I am Jagmohan Kumawat, a multidisciplinary digital expert with 5+ years of experience building luxury websites, mobile apps, digital marketing, automations, intelligent systems and high impact creative assets. My focus is always on delivering results with precision, style and longterm scalability. Signature Excellence • Luxury Websites & Web Systems • iOS & Android Mobile App Development • Custom API Integrations • Advanced Workflow Automation & AI Systems • Salesforce CRM Setup, Flows & Cloud Integrations • Professional Branding & UI/UX • Social Media Content & Digital Strategy • E-Commerce Systems & Automation • Premium Video Creation & Cinematic Editing Technology & Creative Mastery Node.js | React | Laravel | WordPress | PHP | JS | Shopify | Android/iOS | Salesforce Cloud | CRM Automations | REST APIs | Firebase | AI Solutions | Figma | Adobe Suite (Illustrator, Photoshop, Premiere Pro, After Effects) Canva Pro | AutoCAD | Motion Graphics & AI Video | Digital Marketing | Content Writer | SEO/SMO I’m ready to take your project forward with precision, creativity and technical excellence. Feel free to share more details. I will prepare a customize plan for your exact needs. Best Regards Jagmohan Kumawat
₹200,000 INR in 7 days
0.0
0.0

I'll design the conversational flow, fine-tune speech models, and connect to a telephony provider, delivering a fully functional voice-bot application with API endpoints, live dashboard, and documentation, meeting the acceptance criteria of sub-1.5s response latency, 90% keyword accuracy, and reliable handoff to a human agent, supporting US and Canadian numbers, adapting to your budget and timeline. Waiting for your response in chat! Best Regards.
₹200,000 INR in 3 days
0.0
0.0

Hello Just read your post and it seems you are looking for an AI engineer skilled in voice-bot development, speech-to-text, text-to-speech, and telephony integrations. With my years of extensive experience and exceptional expertise in building end-to-end AI calling solutions using Twilio/SIP, real-time STT/TTS, and conversational flow design, I am 100% confident that I can bring your vision to life in the shortest possible time. Let's connect and see how great value I can add to your business. Best Regards Raka
₹200,000 INR in 7 days
0.0
0.0

Hi, I’m excited about your AI Voice Bot project for cold calls. With experience developing AI-driven voice solutions integrated with telephony platforms like Twilio, I can deliver a natural, responsive bot that handles introductions, objections, and smooth human handoffs reliably. I will design an intuitive conversational flow using your scripts and persona notes, fine-tune speech-to-text and text-to-speech models to ensure 90%+ accuracy, and create an easy dashboard for campaign management and monitoring. I understand the need for sub-1.5s response latency and support for US/Canada numbers, and I will ensure the system scales seamlessly with robust API/webhook integrations. I’d love to discuss timelines and share relevant demos. Looking forward to advancing this quickly! Can you share details of the current telephony infrastructure and any preferred models for speech processing? Best regards, Roshan
₹200,000 INR in 25 days
0.0
0.0

Hello, I understand you need an AI voice solution that can handle outbound cold calls naturally, respond to prospects, and escalate to humans when needed. The main challenge is combining real-time speech recognition, natural responses, and reliable call management with low latency while keeping interactions human-like. The solution focuses on robust speech-to-text and text-to-speech integration, telephony connectivity via Twilio or SIP gateways, and real-time handling of objections and interest signals. Campaign controls and dashboards ensure monitoring, scaling, and smooth handoffs to human agents. With careful design, the system will deliver fast, accurate, and natural conversations, ready for immediate deployment across US and Canadian numbers.
₹200,000 INR in 7 days
0.0
0.0

As an AI developer with over a decade of experience, I'm well-versed in creating comprehensive voice-based applications. My strengths in PHP and JavaScript, particularly Node.js, will prove to be a solid foundation for your project. Besides building effective APIs and backend systems with Laravel and ExpressJS, I also have expertise in deploying products using services like Twilio – a requisite for this task. Having designed various conversational flows and implemented speech-to-text and text-to-speech models, I understand the weightage of key factors like response latency and keyword accuracy. To showcase my capabilities in creating AI callers for sales, I'm excited to share a case study where my solution significantly enhanced cold-call conversions at scale for a client. With the commitment to clean code practices, robust problem-solving skills, and an innate drive for transparency in communication, I ensure your project will have the reliable infrastructure you need. My record speaks volumes of on-time, quality-driven deliveries that compel clients towards long-term collaborations – something I intend to offer you too. Let’s connect!
₹200,000 INR in 7 days
0.0
0.0

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