You will get Conversational AI assistant in your app with Claude and ElevenLabs voice
Rising Talent
Rising Talent
Project details
A truly conversational AI assistant does two things well: it thinks and it speaks. Claude Opus 4.7 handles the thinking — multi-step reasoning, tool use, context memory. ElevenLabs handles the speaking — natural, streaming voice output that sounds like a real person. Together they produce a voice assistant that's leagues ahead of anything built on basic TTS and GPT prompts.
I build the full stack: the Claude reasoning layer with memory and optional tool use, the ElevenLabs streaming voice output, and the frontend interface that ties both together into a seamless conversational experience.
What I build:
• Claude conversational backend (streaming, memory, optional tool use)
• ElevenLabs streaming TTS with voice output starting in under a second
• Voice activity detection or push-to-talk input (browser mic or Whisper transcription)
• Full-duplex conversational UI (user speaks, Claude thinks, ElevenLabs speaks)
• Conversation history management
• Voice and persona configuration
• Cost tracking for both Claude and ElevenLabs usage
I build the full stack: the Claude reasoning layer with memory and optional tool use, the ElevenLabs streaming voice output, and the frontend interface that ties both together into a seamless conversational experience.
What I build:
• Claude conversational backend (streaming, memory, optional tool use)
• ElevenLabs streaming TTS with voice output starting in under a second
• Voice activity detection or push-to-talk input (browser mic or Whisper transcription)
• Full-duplex conversational UI (user speaks, Claude thinks, ElevenLabs speaks)
• Conversation history management
• Voice and persona configuration
• Cost tracking for both Claude and ElevenLabs usage
AI Algorithms
Large Language Model, Multimodal Large Language ModelAI Applications
AI Chatbot, AI Text-to-Speech, Conversational AI, Natural Language Generation, Speech SynthesisAI Models
ChatGPT, GPT-4, LaMDA, LLaMA, WhisperWhat's included
| Service Tiers |
Starter
$349
|
Standard
$599
|
Advanced
$899
|
|---|---|---|---|
| Delivery Time | 3 days | 5 days | 7 days |
Number of Revisions | 2 | 3 | 3 |
AI Model Integration | - | - | - |
Batch Normalization | - | - | - |
Database Integration | - | - | - |
Detailed Code Comments | - | - | - |
Image Upscaling | - | - | - |
MLOps | - | - | - |
Model Deployment | - | - | - |
Model Documentation | - | - | - |
Model Monitoring | - | - | - |
Model Testing & Optimization | - | - | - |
Model Tuning | - | - | - |
Natural Language Processing | - | - | - |
NLP Tokenization | - | - | - |
Pre-Training | - | - | - |
Prompt Engineering | - | - | - |
Setup File | - | - | - |
Source Code |
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RM
Robert M.
Mar 21, 2024
Flutter mobile build and ongoing upgrades
Sailesh is one of the best engineers i have ever worked with. He has deep skills across many software engineering practises. We could leave major technical decision making to him, as well as lean on him to lead the build and launch of multiple products.
PV
Pedro V.
Aug 25, 2023
Flutter Mobile App Debugging for App Store Submission
I've troubleshot my Flutter app for some weeks and there were a few different and unexpected bugs. Sailesh was an amazing support throughout this process because he always knew how to solve these niche issues in a matter of hours. It's been a pleasure working with him and I appreciate the communication and relationship established along the way.
PV
Pedro V.
Aug 23, 2023
Flutter: Location Backend Fix
Always a very positive experience working with Sailesh. Very skilled, attentive to detail and great availability.
PV
Pedro V.
Jul 20, 2023
iOS - UI Unresponsiveness Error
Trust is very important when working with someone from Upwork and I am very happy for the relationship I have with Sailesh. For this project, he provided assistance beyond the scope and assisted in providing alternative solutions. Always a pleasure working together
MS
Matthew S.
Jul 11, 2023
Sailesh was a great! He helped us fix some issues with our Android App. From the moment we started chatting I knew he would be good. He was able to understand instructions clearly and provide critical feedback. He was quick in his work and ongoing communication was excellent. Completed the job 100% successfully. Would highly recommend.
About Sailesh
React Native & Flutter Developer | AI Integration, Mobile + Full-Stack
100%
Job Success
Dhulikhel, Nepal - 9:17 am local time
I've been the sole mobile engineer on products that went from nothing to real users — handling everything from first commit to App Store. React Native, Flutter, Expo, Vite, Express, Hono, MongoDB, PostgreSQL. I work across the full stack so you're not waiting on five different people to ship one thing.
I use Claude Code and Codex daily. Scaffolding, boilerplate, debugging loops — the stuff that eats hours. Doesn't replace thinking. But I move faster because of it.
WHAT I'VE BUILT
→ OneTake — mobile lead for a year. Every pivot, every weekend bug, handled. The founder flew out to meet me. His words: "the backbone of OneTake."
→ Kalz — AI nutritionist app, React Native + Expo
→ Solas Compliance — full web and backend for a compliance SaaS
→ Sambad, Flexera — shipped and live
→ ReceiptSasa, Herd — shipped, real users, wound down
AI WORK
→ OCR pipelines and document processing
→ OpenAI and Gemini API integration — production use, not demos
→ Workflows that automated the repetitive stuff clients were doing by hand
→ Claude Code, Codex, Cursor — daily use, not occasional
STACK
→ Mobile: React Native, Expo, Flutter, Dart
→ Web: React, Vite, TypeScript
→ Backend: Express, Hono, Node.js
→ Database: MongoDB, PostgreSQL
→ Cloud: Firebase, AWS, GCP
I reply within 12 hours. Scope is clear? I can usually start the same day.
Drop me a message — glad to take a look at what you're building.
Steps for completing your project
After purchasing the project, send requirements so Sailesh can start the project.
Delivery time starts when Sailesh receives requirements from you.
Sailesh works on your project following the steps below.
Revisions may occur after the delivery date.
Build your Claude and ElevenLabs conversational AI assistant