GleanEnterprise AI that understands your company
vs
SimThe open-source AI workspace to build, distribute, and govern AI agents
Comparison · AI Agents · weekly run Nov 3
Glean vs Sim
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 0.9 for Glean.
Choose Glean if…
- You need ISO 42001 or HIPAA or TX-RAMP Level 2 coverage
- You prefer a larger, established vendor (501–1,000 employees)
- Enterprise search across many connected apps
- Seen as a market leader in enterprise search
Choose Sim if…
- You want the brand AI engines rank higher (2.3 vs 0.9)
- You need more native integrations (275+ vs 250+)
- You need a self-hosted or on-premises option
- Technical control and model flexibility
AI visibility side by side
Latest weekly run · Nov 3
| Metric | Glean | Sim |
|---|---|---|
| Visibility score | 0.9% | 2.3% |
| Change vs last week | New | New |
| Rank in AI Agents | #63 | #39 |
| Share of voice | 0.4% | 0.7% |
| Mentions this run | 3 | 5 |
| Positive in AI answers | 56% | — |
The stronger value in each row is marked with a ✓.
Visibility score trend
Weekly runs over the last 60 days
Glean 0pp · Sim 0pp over 0 weekly runs.
Engine by engine
Sim leads on 3 of 3 engines
ChatGPT
AI Mode
Perplexity
GleanSim
Head to head in AI answers
0 engine answers name both brands
0Glean ranked higher
0Sim ranked higher
Features, pricing & fit
| Dimension | Glean | Sim |
|---|---|---|
| Pricing model | — | Per seat |
| Entry price | — | Free; paid from $25 per seat / mo |
| Free plan | — | Yes |
| Deployment | Per-customer search model stored in the customer's VPC | Cloud-hosted, or self-hosted in your own cloud with Docker or Kubernetes |
| Integrations | 250+ | 275+ |
| Compliance | ISO 42001, HIPAA, TX-RAMP Level 2, SOC 2 Type II, ISO 27001, GDPR | SOC 2 Type II, ISO 27001, GDPR |
| Support | Help Center | Dedicated support on the Enterprise plan |
| Founded | 2019 | 2025 |
| Headquarters | San Francisco, CA | San Francisco, CA, United States |
| Employees | 501–1,000 | 11–50 |
| Funding | Seed or early-stage round (emerged from stealth) · $765M raised | Series A · $7M raised |
| Best for | Large enterprises that want AI answers and agents grounded in their own permission-aware company data | Companies that need to build, deploy, and govern AI agents across the organization with central control over access, spend, and data |
Plans side by side
Glean
Pricing not available.
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
Glean
- Enterprise search across many connected apps
- Seen as a market leader in enterprise search
- Finds answers and internal experts quickly
- Recommended for enterprise-wide knowledge search
Sim
- Technical control and model flexibility
- Self-hosting option
Data collected ·ChatGPT, Perplexity, Google AI Mode·coverage 100%·next run
Cite as: SlateIndex, “Glean vs Sim”, https://slateindex.ai/compare/glean-vs-sim, data of Nov 3, 2026. Licence: CC BY 4.0.