How to create your own AI agent for free – quick guide 2026

🤖 How to create your own AI agent – step by step

Concrete instructions for the two most popular tools: Google Gemini Gems (free) and ChatGPT Custom GPT (20€/month). No coding skills needed.

📅 Updated April 2026 | ⏱️ Reading time ~5 min

💡 Before you start: First, read the main guide to training an AI agent – it explains what training an agent means.

✅ Option A: Google Gemini Gems – completely free

Gemini Gems is the easiest and most affordable way to create your own AI agent. All you need is a Google account.

Step 1 – Open Gemini

Go to gemini.google.com and sign in with your Google account. In the left menu, click "Gems" and then "New Gem".

Step 2 – Give your agent a name

Give your agent a clear name, for example:

"Customer Service Agent – [Your Company Name]"

Step 3 – Write instructions

This is the most important part. In the Instructions field, write in Finnish:

You are the customer service agent for the [Company Name] online store.
You are friendly and solution-oriented.
You always answer in Finnish.
Delivery time is 3–5 business days.
The return period is 14 days.
If you do not know the answer, direct the customer to: info@company.fi

Step 4 – Save and test

Click "Save". Test the agent by typing questions into the chat field. Correct the instructions if necessary. Done!

✅ Open Google Gemini for free →

💰 Option B: ChatGPT Custom GPT – 20€/month

ChatGPT Custom GPT offers more features, but requires a Plus subscription.

Step 1 – Open GPT Builder

Go to chatgpt.com and log in. Click "Explore GPTs" and then "Create".

Step 2 – Choose: Create or Configure

Create tab: You tell the chat what you want – it builds the agent automatically.

Configure tab: You define everything more precisely yourself.

Step 3 – Fill in the Configure fields

  • Name: Agent's name
  • Description: Short description
  • Instructions: Detailed instructions
  • Knowledge: Upload PDF files
  • Capabilities: Select capabilities

Step 4 – Save and share

Click "Save". Choose visibility and share the link with your team.

🤖 Open ChatGPT →

📊 Which one is right for you?

Google Gemini Gems ChatGPT Custom GPT
Price ✅ Free ⚠️ 20€/month (Plus)
Ease of Use ⭐⭐⭐⭐⭐ ⭐⭐⭐⭐
Google Integration ✅ Gmail, Docs, Sheets ❌ No
File Upload ⚠️ Limited ✅ PDF, Word, Excel
Sharing with Team ⚠️ Limited ✅ Easy to share with a link
🎯 Recommendation: Start with Google Gemini Gems – it's free and sufficient for most needs. If you require file uploads or team use, consider a ChatGPT Plus subscription.

📚 Read also:

🚀 Start today – for free!

Your own AI agent is ready in an hour. Start with Google Gemini Gems – for free, in Finnish, right away.

✅ Open Google Gemini for free →