Stack AI Pricing 2026
Plans, hidden costs, and alternatives compared
Cite this data: Toolradar, Stack AI pricing verified Sep 2026, toolradar.com/tools/stack-ai/pricing
Stack AI uses custom pricing.
Verified Sep 2026 from the official pricing page.
Is Stack AI worth the price?
Stack AI's pricing is quite limited for smaller teams, with only a Free tier and an Enterprise tier.
The Free tier offers a decent starting point with 500 runs/month for $0, but there's no mid-range option for growing businesses. This structure is best suited for individual developers or very large enterprises.
Pricing Plans
Free
$0 / month
- 500 runs per month
- 2 Projects
- 1 Seat
- Community support on Discord
Enterprise
Custom
- Custom number of runs
- Unlimited projects
- Custom number of seats
- All features and data loaders
- Dedicated infrastructure
- Dedicated solution engineers
- On-prem deployment
- Virtual Private Cloud deployment
- Access control
- SSO (Single Sign-On)
- SOC 2, HIPAA & GDPR compliance
Hidden Costs & Gotchas
Potential for rapid overage if not on Enterprise
How Stack AI compares
3 of 3 direct competitors offer a free plan.
| Tool | Starting price | Free plan |
|---|---|---|
| Stack AI | Contact sales | Yes |
| LangChain | $39/month, billing unit not specified | Yes |
| LlamaIndex | Contact sales | Yes |
| Hugging Face | $9/month, billing unit not specified | Yes |
Stack AI Pricing FAQ
How much does Stack AI cost?
Stack AI uses custom pricing. Contact Stack AI directly for a quote based on your team size and requirements.
Does Stack AI have a free plan?
Yes. Stack AI offers a free plan called "Free". It includes: 500 runs per month, 2 Projects, 1 Seat.
What are alternatives to Stack AI?
Alternatives to Stack AI include LangChain, LlamaIndex, Hugging Face. LangChain starts at $39/month, billing unit not specified; Hugging Face starts at $9/month, billing unit not specified.
Stack AI alternatives
Direct competitors. Starting prices match the table above.
Sources
- Official Stack AI pricing: stack-ai.com/pricing (verified Sep 2026)
- Cite this data: Toolradar, Stack AI pricing verified Sep 2026, toolradar.com/tools/stack-ai/pricing
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