Message Credits & AI Models
How message credits work, what each AI model costs, and how to choose the right model for your chatbot.
Every reply your chatbot sends costs credits. The number of credits per reply depends on which AI model your bot uses. Your plan includes a monthly credit allowance — the same number you had before as a message allowance.
How Credits Work
When a visitor asks your chatbot a question, the bot generates a reply. That reply costs credits based on two things:
The model your bot uses — each model has a fixed credit cost per reply (see the table below).
Actions performed during the reply — if the bot also performs actions like submitting a form, triggering a handover, or running a custom action, each successful action costs the same number of credits again.
The formula: credits = (1 + number of actions) x model credits
For example, if your bot uses a model that costs 2 credits per reply and it also submits a lead form during that reply, the total is (1 + 1) x 2 = 4 credits.
AI Models and Credit Costs
AI Bot Kit offers seven AI models. Most use just 1 credit per reply. Premium models are more capable but use more credits per reply.
GPT-5.4 Nano
1
Everyday support and FAQ bots — fast and affordable
GPT-5.6 Luna
1
Everyday support and FAQ bots — fast and affordable
GPT-5.4 Mini
2
Bots that need a bit more depth in their answers
GPT-5.2
4
Detailed, nuanced conversations
GPT-5.6 Sol
4
Detailed, nuanced conversations
GPT-5.4
6
Complex reasoning and longer answers
GPT-5.5
10
The most capable model — best for high-value interactions
Your Credit Allowance
Your plan's credit allowance is the same number you had before as a message allowance:
Free Full Access
100 (lifetime, not monthly)
Basic
1,000 / month
Essential
2,000 / month
Business
3,000 / month
Credits renew at the start of each billing cycle on paid plans. On the Free Full Access plan, the 100 credits are a one-time lifetime allowance.
If you have add-ons, those extra credits are added to your monthly allowance.
What Happens When Credits Run Low
At 80% used — You'll receive an email notification letting you know your credits are running low. This gives you time to adjust your model choice or purchase more credits.
At 100% used — New conversations are paused. Any reply that your bot is already generating when you hit the limit will be delivered in full — your visitors won't see a cut-off response. But no new conversations can start until your credits renew or you add more.
Running out of credits? You can switch to a lower-cost model, purchase an add-on, or upgrade your plan for a larger monthly allowance.
How to Choose Your AI Model
Open your chatbot in the dashboard.
In the left sidebar, go to Settings.
On the General tab, find the AI Model section.
Pick the model you want from the list. Each option shows its credit cost.
Click Save changes.
Your bot will start using the new model for all future replies. Existing conversations are not affected.
Tips
Use a 1-credit model for most bots. GPT-5.4 Nano and GPT-5.6 Luna are fast, capable, and make your credits go the furthest.
Reserve premium models for high-value bots. If you have a sales or product-expert bot where answer quality directly drives revenue, a higher-cost model can be worth it.
Check your usage regularly. Go to Settings > Plans & Billing to see your remaining credits and adjust if needed.
Related Topics
Where to Find Your Usage — Track your credit balance
Add-ons & Message Top-ups — Buy more credits
Upgrading to Paid Plans — Get a larger monthly allowance
Free Full Access Plan — How credits work on the free plan
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