Connecting ChatGPT, Claude or Gemini to WhatsApp: your questions answered
You can connect ChatGPT, Anthropic Claude or Google Gemini to a WhatsApp number using a platform such as Convo360, which lets you bring your own API key (BYOK), add a knowledge base from your documents or website for RAG-based answers, and control tone with a system prompt and temperature — all without writing code.
- Convo360 supports OpenAI, Anthropic Claude and Google Gemini per agent, using your own API key (BYOK).
- Upload PDFs, documents or website URLs to a knowledge base so the AI answers from your own content (RAG).
- A system prompt and temperature setting control the bot's tone and how literal or creative its answers are.
- You pay the AI provider directly for tokens used — Convo360 adds no markup on AI usage.
- No coding is required; an AI Reply block in the Flow Builder connects the model to WhatsApp.
ChatGPT and WhatsApp basics
Can I use ChatGPT on WhatsApp?
Not directly, OpenAI's ChatGPT app doesn't connect to WhatsApp on its own. To get ChatGPT-style replies on WhatsApp you need a platform that links the official WhatsApp Business API (Meta Cloud API) to OpenAI's models using your own API key, typically through an AI Reply step in a chatbot builder.
Is ChatGPT on WhatsApp official?
There is no official ChatGPT app for WhatsApp from OpenAI. What exists are business platforms that use the official WhatsApp Business API on one side and OpenAI's API on the other, joining the two so your WhatsApp number can reply using GPT models under your own account.
What is GPT WhatsApp integration exactly?
It means your WhatsApp Business number is connected to an OpenAI GPT model so customer messages are answered by AI instead of a human or a fixed menu. On Convo360 this is set up as an AI Reply step inside a no-code flow, using your own OpenAI key.
How do I connect OpenAI to WhatsApp?
Connect your official WhatsApp Business number through Meta's embedded signup, add your OpenAI API key in the AI agent's settings, write a system prompt describing how the bot should behave, and publish the flow. No code is required on Convo360.
What's the difference between the ChatGPT app and a WhatsApp AI agent?
The ChatGPT app is a general assistant you chat with directly on your phone or browser. A WhatsApp AI agent runs on your business number, answers your customers automatically using the model you choose, and can be trained on your own documents, catalog or FAQs.
Do I need coding knowledge to connect GPT to WhatsApp?
No. On Convo360, connecting an AI model to WhatsApp is done through a visual, drag-and-drop Flow Builder, add an AI Reply block, paste your API key, write a system prompt and publish. See the AI agents documentation for the exact steps.
Choosing an AI model: OpenAI, Claude or Gemini
Can I use Anthropic Claude for my WhatsApp bot?
Yes. Convo360 supports Anthropic Claude as one of the AI models you can assign to an agent, alongside OpenAI and Google Gemini. You bring your own Claude API key, and the agent uses it to generate replies on WhatsApp and other channels.
Can I use Google Gemini for my WhatsApp bot?
Yes, Google Gemini is supported per agent using your own API key. Gemini Live can also power AI voice calls, so the same provider can handle both your WhatsApp chat replies and phone conversations if you choose to use it for both.
Which AI model is best for customer support?
There is no single best model for every business, OpenAI, Anthropic Claude and Google Gemini can all handle support conversations well. It's more useful to compare model against model on tone, cost and accuracy for your own knowledge base than to pick by brand name alone. See this OpenAI vs Claude vs Gemini comparison.
Can I switch between OpenAI, Claude and Gemini?
Yes. Because Convo360 works on BYOK (bring your own key) per agent, you can change the model an agent uses at any time, add a different provider's key and select it in the agent's settings. You are not locked into one AI company.
How much does it cost to run GPT on WhatsApp?
There's no fixed figure, because Convo360 doesn't add a markup on AI usage, you pay the provider (OpenAI, Anthropic or Google) directly at their published token rates, plus WhatsApp's own per-message fees to Meta. Actual cost depends on your message volume and the model you pick.
Is my data used to train the AI model?
This depends on the AI provider's own policy for API usage, not on Convo360, check OpenAI's, Anthropic's or Google's current API data-use terms directly, since these can differ from their consumer chat apps and can change over time.
Training the bot on your own data
Can I build an AI chatbot with my own data?
Yes. On Convo360, an AI agent can have a knowledge base built from your own documents and web pages, so its answers come from your business information rather than only the model's general knowledge.
How do I train a chatbot on a PDF?
Upload the PDF to the agent's knowledge base in Convo360. It is indexed and used with retrieval-augmented generation (RAG), so when a customer asks a related question the AI pulls the relevant passage from your PDF before answering, no fine-tuning or coding needed.
Can I upload my product catalog to train the bot?
Yes, you can upload a product catalog document or link the catalog page URL to the agent's knowledge base. The bot then answers questions about products, prices or specifications by referring to that content directly instead of guessing.
How does a chatbot answer from my own documents (RAG)?
Retrieval-augmented generation (RAG) means the AI searches your uploaded documents or URLs for the most relevant sections before generating a reply, then answers using that context together with the underlying model's language ability. Read more in this explainer on RAG.
Can the bot answer only from my website content?
Yes. You can add your website URLs to the agent's knowledge base so it draws answers from your site's pages, and write the system prompt to instruct it to stick to that content rather than general knowledge.
Does the AI hallucinate or make up answers?
Any large language model can occasionally produce a confident-sounding but wrong answer, known as hallucination, this isn't unique to one provider. A well-scoped knowledge base and a clear system prompt reduce it, but for medical, legal or financial matters the bot should inform and hand over to a professional, not decide for the customer.
Can I create a custom GPT for my business?
Rather than OpenAI's own Custom GPTs product, on Convo360 you build the equivalent by creating an AI agent with your chosen model (OpenAI, Claude or Gemini), a system prompt describing your business, and a knowledge base of your documents, then deploy it to WhatsApp and other channels, not just one chat app.
Setting it up on Convo360
How do I use my own OpenAI API key for a WhatsApp bot?
Open the AI agent's settings in Convo360, choose OpenAI as the model provider, paste your own API key (stored encrypted), and connect the agent to a WhatsApp flow using the AI Reply block. OpenAI bills you directly for the tokens the agent uses.
How do I write a good system prompt?
A good system prompt states who the bot is, what business it represents, its tone, what it should and shouldn't answer, and when to hand a conversation to a human. Keep it specific and short rather than vague, and update it as you see real customer questions.
What does the temperature setting do?
Temperature controls how literal or creative the AI's replies are. A lower temperature keeps answers close to your knowledge base and predictable, useful for support and factual queries, while a higher temperature allows more varied phrasing. Convo360 lets you set this per agent.
Can different workspaces or agents use different AI models?
Yes. Model choice is set per agent, so one agent can run on OpenAI while another uses Claude or Gemini, even within the same Convo360 login across multiple workspaces. This lets you compare providers side by side before settling on one. Start a free 14-day trial to try it yourself.
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Frequently asked questions
Can I use ChatGPT on WhatsApp?
Not directly — OpenAI's ChatGPT app doesn't connect to WhatsApp on its own. To get ChatGPT-style replies on WhatsApp you need a platform that links the WhatsApp Business API to OpenAI's models using your own API key, typically through an AI Reply step in a chatbot builder.
Is ChatGPT on WhatsApp official?
There is no official ChatGPT app for WhatsApp from OpenAI. Business platforms use the official WhatsApp Business API on one side and OpenAI's API on the other, joining the two so your WhatsApp number can reply using GPT models under your own account.
What is GPT WhatsApp integration exactly?
It means your WhatsApp Business number is connected to an OpenAI GPT model so customer messages are answered by AI instead of a human or a fixed menu, typically as an AI Reply step inside a no-code flow using your own OpenAI key.
How do I connect OpenAI to WhatsApp?
Connect your official WhatsApp Business number through Meta's embedded signup, add your OpenAI API key in the AI agent's settings, write a system prompt describing how the bot should behave, and publish the flow — no code required on Convo360.
What's the difference between the ChatGPT app and a WhatsApp AI agent?
The ChatGPT app is a general assistant you chat with directly. A WhatsApp AI agent runs on your business number, answers customers automatically using the model you choose, and can be trained on your own documents, catalog or FAQs.
Do I need coding knowledge to connect GPT to WhatsApp?
No. Connecting an AI model to WhatsApp on Convo360 is done through a visual, drag-and-drop Flow Builder — add an AI Reply block, paste your API key, write a system prompt and publish.
Can I use Anthropic Claude for my WhatsApp bot?
Yes. Convo360 supports Anthropic Claude as one of the AI models you can assign to an agent, alongside OpenAI and Google Gemini. You bring your own Claude API key for the agent to use.
Can I use Google Gemini for my WhatsApp bot?
Yes, Google Gemini is supported per agent using your own API key. Gemini Live can also power AI voice calls, so one provider can handle both your WhatsApp chat and phone conversations.
Which AI model is best for customer support?
There's no single best model for every business — OpenAI, Anthropic Claude and Google Gemini can all handle support well. Compare model against model on tone, cost and accuracy for your own knowledge base rather than picking by brand name.
Can I switch between OpenAI, Claude and Gemini?
Yes. Because Convo360 works on BYOK (bring your own key) per agent, you can change the model an agent uses at any time by adding a different provider's key and selecting it in the agent's settings.
How much does it cost to run GPT on WhatsApp?
There's no fixed figure since Convo360 adds no markup on AI usage — you pay the provider directly at their published token rates, plus WhatsApp's own per-message fees to Meta, depending on your volume and model.
Is my data used to train the AI model?
This depends on the AI provider's own policy for API usage, not on Convo360 — check OpenAI's, Anthropic's or Google's current API data-use terms directly, as these can differ from their consumer chat apps.
Can I build an AI chatbot with my own data?
Yes. On Convo360, an AI agent can have a knowledge base built from your own documents and web pages, so its answers come from your business information rather than only general knowledge.
How do I train a chatbot on a PDF?
Upload the PDF to the agent's knowledge base. It's indexed and used with retrieval-augmented generation (RAG), so when a customer asks a related question the AI pulls the relevant passage from your PDF before answering — no fine-tuning needed.
Can I upload my product catalog to train the bot?
Yes, you can upload a product catalog document or link the catalog page URL to the agent's knowledge base, and the bot will answer questions about products, prices or specifications from that content.
How does a chatbot answer from my own documents (RAG)?
Retrieval-augmented generation (RAG) means the AI searches your uploaded documents or URLs for the most relevant sections before generating a reply, then answers using that context together with the model's language ability.
Can the bot answer only from my website content?
Yes. Add your website URLs to the agent's knowledge base so it draws answers from your site's pages, and write the system prompt to instruct it to stick to that content rather than general knowledge.
Does the AI hallucinate or make up answers?
Any large language model can occasionally produce a confident-sounding but wrong answer, known as hallucination. A well-scoped knowledge base and clear system prompt reduce it, but for medical, legal or financial matters the bot should hand over to a professional.
Can I create a custom GPT for my business?
Rather than OpenAI's own Custom GPTs product, on Convo360 you create an AI agent with your chosen model, a system prompt describing your business, and a knowledge base of your documents, then deploy it to WhatsApp and other channels.
How do I use my own OpenAI API key for a WhatsApp bot?
Open the AI agent's settings in Convo360, choose OpenAI as the model provider, paste your own API key (stored encrypted), and connect the agent to a WhatsApp flow using the AI Reply block.
How do I write a good system prompt?
A good system prompt states who the bot is, what business it represents, its tone, what it should and shouldn't answer, and when to hand the conversation to a human. Keep it specific and short.
What does the temperature setting do?
Temperature controls how literal or creative the AI's replies are. A lower temperature keeps answers close to your knowledge base and predictable, while a higher temperature allows more varied phrasing. Convo360 lets you set this per agent.
Can different workspaces or agents use different AI models?
Yes. Model choice is set per agent, so one agent can run on OpenAI while another uses Claude or Gemini, even within the same Convo360 login across multiple workspaces, letting you compare providers side by side.
Related reading
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