SimThe open-source AI workspace to build, distribute, and govern AI agents
vs
Stack AIAI Agents for the Enterprise
Comparison · AI Agents · weekly run Nov 3
Sim vs Stack AI
Which one do AI engines recommend, and how do they differ on price, fit and features?
The short answer
Sim is the stronger AI pick in AI Agents: it has a visibility score of 2.3 versus 1.4 for Stack AI.
Choose Sim if…
- You want the brand AI engines rank higher (2.3 vs 1.4)
- You need a self-hosted or on-premises option
- Per seat pricing suits your budget better than usage-based
- Technical control and model flexibility
Choose Stack AI if…
- You need more native integrations (500+ vs 275+)
- You need HIPAA coverage
- You prefer a larger, established vendor (51–200 employees)
- Usage-based pricing suits your budget better than per seat
AI visibility side by side
Latest weekly run · Nov 3
| Metric | Sim | Stack AI |
|---|---|---|
| Visibility score | 2.3% | 1.4% |
| Change vs last week | New | New |
| Rank in AI Agents | #39 | #51 |
| Share of voice | 0.7% | 0.4% |
| Mentions this run | 5 | 3 |
| Positive in AI answers | — | 0% |
The stronger value in each row is marked with a ✓.
Visibility score trend
Weekly runs over the last 60 days
Sim 0pp · Stack AI 0pp over 0 weekly runs.
Engine by engine
Sim leads on 1 of 3 engines
ChatGPT
AI Mode
Perplexity
SimStack AI
Head to head in AI answers
0 engine answers name both brands
0Sim ranked higher
0Stack AI ranked higher
Features, pricing & fit
| Dimension | Sim | Stack AI |
|---|---|---|
| Pricing model | Per seat | Usage-based |
| Entry price | Free; paid from $25 per seat / mo | Contact sales |
| Free plan | Yes | Yes |
| Deployment | Cloud-hosted, or self-hosted in your own cloud with Docker or Kubernetes | Multi-tenant cloud, VPC, or on-premise |
| Integrations | 275+ | 500+ |
| Compliance | SOC 2 Type II, ISO 27001, GDPR | HIPAA, GDPR, SOC 2 Type II, ISO 27001 |
| Support | Dedicated support on the Enterprise plan | Community support on Discord, Email support, Priority support, Dedicated support |
| Founded | 2025 | 2023 |
| Headquarters | San Francisco, CA, United States | San Francisco, CA, United States |
| Employees | 11–50 | 51–200 |
| Funding | Series A · $7M raised | Series A · $19M raised |
| Best for | Companies that need to build, deploy, and govern AI agents across the organization with central control over access, spend, and data | IT teams and enterprise architecture teams that need to orchestrate, deploy, govern, and scale AI across the enterprise, including finance, risk and operations teams. |
Plans side by side
Sim
Free$0free forever
Pro$25per user/month, billed monthly
Max$100per user/month, billed monthly
EnterpriseCustomcustom, talk to sales
Pros and cons
Themes from the AI answers that mention each brand
Sim
- Technical control and model flexibility
- Self-hosting option
Stack AI
- hosted no-code agent builders
- free tiers for experimenting
- solid G2 and Slashdot ratings
Data collected ·ChatGPT, Perplexity, Google AI Mode·coverage 100%·next run
Cite as: SlateIndex, “Sim vs Stack AI”, https://slateindex.ai/compare/sim-vs-stack-ai, data of Nov 3, 2026. Licence: CC BY 4.0.