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$
USD
I will develop custom ai chatbot with chatgpt langchain rag openai
Sergey AI Dev
About this gig
Hey there! Need a custom AI chatbot that answers from your own data? You are in the right place.
I am a Full-Stack AI Developer building production-ready AI solutions, advanced RAG systems, and smart conversational agents for startups and enterprises.
What Your Bot Can Do:
Smart RAG Q&A: Answers from PDFs, CSVs, sites, or SQL databases.
24/7 Support: Automates FAQs, captures qualified leads, and books meetings.
Human Hand-off: Automatically transfers complex chats to a live agent.
Omnichannel: Works as a website widget, API, WhatsApp, or Slack bot.
Multilingual: Matches your brand tone in any language perfectly.
Tech Stack & Frameworks:
LLMs: OpenAI (GPT-4o), Claude, Gemini, DeepSeek, and Groq.
Frameworks: LangChain, LlamaIndex, and Vercel AI SDK.
Vector DBs: Pinecone, pgvector, Drizzle, and Postgres.
Guardrails: Built-in evals to eliminate hallucinations.
How We Work:
1. Strategy: We discuss your business goals and data structure.
2. Build & Test: I develop and test your bot for absolute accuracy.
3. Deployment: Your bot goes live with ongoing technical support.
Please contact me before ordering so we can scope your AI project!
Get to know Sergey AI Dev
Sergey AI Dev
Next Gen AI Chatbots and Smart Business Automation
- FromBelarus
- Member sinceJun 2026
Languages
Russian, English
Hi! I'm Sergey. I build custom AI chatbots that communicate like real people.
My assistants understand user intent and deliver context-aware answers, replacing scripted replies. Built with ChatGPT, Claude, and LangChain, they operate 24/7 on your Website, WhatsApp, Telegram, or Instagram.
How I help businesses scale:
• Smart Support: Accurate answers about products.
• Lead Capture: Automated booking integrated into CRM.
• Sales Automation: Bots that handle objections & close deals.
I deliver secure, turnkey AI solutions. Message me today — I reply fast!
FAQ
What types of AI conversational solutions do you develop?
I build custom AI agents for customer service, lead qualification, internal knowledge bases, and site assistants. Every bot is integrated with your data, aligns with your brand tone, and runs 24/7. Share your business objectives, and I will recommend the optimal setup for you.
Can the chatbot answer queries using my own business files?
Absolutely. I specialize in Retrieval-Augmented Generation (RAG). Your bot will securely extract answers directly from your PDFs, CSVs, websites, or databases instead of guessing. You can update this knowledge base anytime to keep information current.
Which AI models and development tools do you utilize?
I work with top LLMs like OpenAI GPT-4o, Claude, Gemini, and DeepSeek. For architecture, I use LangChain, LlamaIndex, and vector databases like Pinecone or pgvector. I will select the best tech stack based on your specific budget and accuracy requirements.
Can you integrate the bot with my website and other apps?
Yes. I can deliver a clean, embeddable website widget, a custom API, or direct integrations with channels like WhatsApp, Slack, and Telegram. Additionally, the system can be configured to support multiple languages seamlessly if your target audience requires it.
Can the AI collect user leads and transfer chats to humans?
Yes. The chatbot efficiently captures and qualifies leads 24/7. When a complex query arises that goes beyond its scope, it seamlessly hands off the conversation to a live agent. This ensures you maintain control over high-value customer interactions.
How do you ensure AI accuracy and prevent hallucinations?
I ground every response in your verified files using advanced RAG and inject strict guardrails. This forces the bot to admit uncertainty rather than inventing facts. I run rigorous tests on real-use questions to guarantee reliability before launch.
What do you need from my side to initiate the project?
Please provide the documents, databases, or website links the bot should learn from, a brief summary of your goals, and a few sample questions. If you have specific brand guidelines or a preferred conversational tone, share those too.
How do you determine the project timeline and total cost?
Simple data-driven bots take around 4 days, while advanced multi-channel agents require up to 14 days. The exact price and timeframe depend on your data complexity and integrations. Please message me with your use case for a precise custom quote.
Is my company data kept secure and strictly private?
Absolutely. All your files and business data are handled with strict confidentiality and never shared. To ensure total security, I can build everything directly on your own cloud accounts and API keys, leaving you in complete control of your assets.
Do you provide post-launch support and future revisions?
Yes. All packages include a set number of revisions. I also offer ongoing technical support and maintenance packages to update your chatbot's knowledge base, monitor its performance, and introduce new features as your business expands.
