kitio.aiCustomGPT.ai vs Epsilla
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. Epsilla has the lower starting price: about $29 a month, against $99 for CustomGPT.ai.
At a glance
Best for
Pricing model
Starting price
Free plan
Made by
Based in
Rating
Key features
- Train on websites and documents
- Source citations
- Anti-hallucination settings
- API access
- Embeddable widget
- No-code agent builder
- RAG as a service
- Agent and chatbot analytics
- HarnessRouter agent API
- Per-use add-ons
| Feature | CustomGPT.ai | Epsilla |
|---|---|---|
| Best for | Business chatbots built on your content with source citations | No-code builder for AI agents with built-in knowledge bases |
| Category | Agents & automation | Agents & automation |
| Pricing model | Free trial | Freemium |
| Starting price | $99/mo | $29/mo |
| Free plan | No, 7-day trial | Yes |
| Made by | CustomGPT.ai | Epsilla |
| Based in | United States | – |
| Rating | No ratings yet | No ratings yet |
| Key features |
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Pricing compared
Epsilla has the lower starting price: about $29 a month, against $99 for CustomGPT.ai.
Free plan
Cheapest paid plan
Top plan
Free trial
3 plans
Standard
$99/mo
- 10 agents
- 1,000 queries/month
- 3 team members
- RAG API access
Premium
$499/mo
- 25 agents
- 5,000 queries/month
- 5 team members
- Remove branding
Enterprise
Custom
- Custom limits
- Wire transfer and ACH billing
4 plans
Free
Free
- 1 team member
- 1 AI application
- 1 knowledge base
- Community support
Starter
$29/mo
- 2 team members
- 5 AI applications
- 5 knowledge bases
- Email support
Professional
$249/mo
- 20 team members
- 50 AI applications
- 50 knowledge bases
- Dedicated support channel
AI Concierge
$2499/mo
- Everything in Professional
- Fractional AI engineer
- Done-for-you agent build-out
Prices in USD, checked Oct 28, 2026 or later. Plans change often, so confirm on each tool's site before you buy.
Pros and cons
CustomGPT.ai
- Strong focus on accurate answers
- Cites sources
- Supports many file types
- Higher starting price than rivals
- Less flexible conversation design
Epsilla
- Free tier with no credit card
- Build agents without code
- Open-source HarnessRouter option
- Pay-as-you-grow add-ons
- Free tier data cleared after 30 idle days
- Starter has only 2 team members
- Add-on costs can stack up
Which one should you choose?
Choose CustomGPT.ai if you want:
- Strong focus on accurate answers
- Cites sources
- Supports many file types
Watch out: higher starting price than rivals.
Choose Epsilla if you want:
- Free tier with no credit card
- Build agents without code
- Open-source HarnessRouter option
Watch out: free tier data cleared after 30 idle days.
CustomGPT.ai vs Epsilla FAQ
What is the difference between CustomGPT.ai and Epsilla?
CustomGPT.ai: Business chatbots built on your content with source citations. Epsilla: No-code builder for AI agents with built-in knowledge bases. Both are agents & automation tools.
Is CustomGPT.ai or Epsilla cheaper?
Epsilla has the lower starting price: about $29 a month, against $99 for CustomGPT.ai.
Do CustomGPT.ai and Epsilla have free plans?
CustomGPT.ai: No, 7-day trial. Epsilla: Yes.
Who makes CustomGPT.ai?
CustomGPT.ai is made by CustomGPT.ai, based in United States.
Who makes Epsilla?
Epsilla is made by Epsilla.
Which should I choose, CustomGPT.ai or Epsilla?
Choose CustomGPT.ai if you value strong focus on accurate answers and cites sources. Choose Epsilla if you value free tier with no credit card and build agents without code.