Based only on the facts in our directory. The right pick still depends on the job you need done.
Lower starting price
Not comparable
Not comparable: Stack AI does not list a price
Free plan
Stack AI
Only Stack AI has one
Higher rating
Stack AI
4.2 against 4.4
Same job?
Yes
Both are Automation tools
Side by side
Compared on
Microsoft Copilot Studio
Stack AI
Our rating
4.2
4.4Better
Starts at
$200/mo
Free
Free plan
No
YesBetter
Category
Automation
Automation
Plans
Capacity pack$200 per pack/mo (25,000 Copilot Credits, tenant-wide)
Pay-as-you-goBilled per Copilot Credit used, through an Azure subscription
Pre-purchase planPrepaid Copilot Credit Commit Units, up to 20% off
Included in Microsoft 365 Copilot$30 per user/mo, paid yearly
Free
Key features
Low-code conversational agent builder
Deep integration with Teams, SharePoint, and Dynamics 365
Grounding in Dataverse records and internal APIs
Evolved from Microsoft's earlier Power Virtual Agents
Enterprise-tier pricing within Microsoft 365 licensing
No-code builder for internal AI tools and assistants
Retrieval-augmented generation over a team's own documents
Built for HR, legal, and operations use cases specifically
Visual workflow building without engineering resources
Free tier for building and testing
Pros
Tight integration removes separate identity and hosting setup for Microsoft shops
Agents can ground directly in existing SharePoint and Dataverse content
Deploys straight into Teams where employees already work
Removes the engineering bottleneck for internal AI tool requests
RAG grounding keeps answers tied to a company's actual documents
Accessible to business teams without technical training
Cons
High price point reflects enterprise-only positioning
Full value depends on already being deep in the Microsoft ecosystem
Less useful for teams not using Microsoft 365 as their core platform
Best suited to internal tools, less to customer-facing products
Quality depends heavily on how well-organized source documents are
Newer platform with a shorter track record than established competitors
Company
Microsoft, founded 2023
StackAI, founded 2022
Prices come from each vendor's pricing page, last checked 20260629. Check the vendor before you buy.
FAQ
Questions people ask
Is Microsoft Copilot Studio better than Stack AI?
In our reviews Microsoft Copilot Studio scores 4.2 and Stack AI scores 4.4. The better pick depends on the job. Microsoft Copilot Studio: Microsoft's low-code builder for custom Teams and 365 copilots. Stack AI: Internal AI tools for HR, legal, and ops, no engineers required.
Which is cheaper, Microsoft Copilot Studio or Stack AI?
Microsoft Copilot Studio: from $200/mo. Stack AI: free.
Do Microsoft Copilot Studio and Stack AI have free plans?