AI models and credits
Which models you can choose for your agent, how many AI credits each one uses, and how to change it.
In the product: AI agent →
Each agent uses an AI model. The model affects how well the agent reasons and how many AI credits your plan uses. Your agent starts with GPT-6 Luna, which works well for most businesses.
The models
| Model | Credits | Best for |
|---|---|---|
| GPT-6 Luna | ×1 | The best option to start with: fast and affordable |
| Gemini 3.5 Flash-Lite | ×1 | The lowest cost |
| Gemini 3.8 Flash | ×4 | Higher quality in more complex conversations |
| GPT-6 Sol | ×10 | The most advanced reasoning; Ultra plan only |
How credits are counted
Each time the agent queries the model, it uses at least 1 credit × the model’s multiplier. Very long queries add 1 more credit for every 10,000 tokens.
A reply can take more than one query, for example searching your catalog and then answering. That’s why one reply can use more than one credit. With a ×4 model, each query costs four times as much as with a ×1 model.
Your usage for the month appears on the Dashboard. Read Usage and plan limits.
Change the model
- Open your agent in My Agents.
- On the Model card, on the left, click Change.
- Choose the provider (OpenAI or Google), select the model, and click Confirm Selection.
If your agent has already been published, the new model is used immediately, and the card shows Changes apply immediately. If it’s still a draft, the model is saved and used when you activate the agent.
Which model to choose
- Start with GPT-6 Luna.
- If your agent handles long conversations or services with many questions and you notice inaccurate answers, try Gemini 3.8 Flash. Keep an eye on your credit usage over the following days.
- Change one model at a time and review a few real conversations before deciding.