LlamaIndexTurn any document into agent-ready context.
vs
Stack AIAI Agents for the Enterprise
Comparison · AI Agents · weekly run Nov 3
LlamaIndex vs Stack AI
Which one do AI engines recommend, and how do they differ on price, fit and features?
The short answer
LlamaIndex is the stronger AI pick in AI Agents: it has a visibility score of 2.2 versus 1.4 for Stack AI.
Choose LlamaIndex if…
- You want the brand AI engines rank higher (2.2 vs 1.4)
- AI answers describe it more positively (20% vs 0% positive)
- Premier choice for RAG-centric agents
- Named as a popular agent development framework
Choose Stack AI if…
- You need ISO 27001 coverage
- You prefer a larger, established vendor (51–200 employees)
- hosted no-code agent builders
- free tiers for experimenting
AI visibility side by side
Latest weekly run · Nov 3
| Metric | LlamaIndex | Stack AI |
|---|---|---|
| Visibility score | 2.2% | 1.4% |
| Change vs last week | New | New |
| Rank in AI Agents | #41 | #51 |
| Share of voice | 0.8% | 0.4% |
| Mentions this run | 5 | 3 |
| Positive in AI answers | 20% | 0% |
The stronger value in each row is marked with a ✓.
Visibility score trend
Weekly runs over the last 60 days
LlamaIndex 0pp · Stack AI 0pp over 0 weekly runs.
Engine by engine
LlamaIndex leads on 2 of 3 engines
ChatGPT
AI Mode
Perplexity
LlamaIndexStack AI
Head to head in AI answers
0 engine answers name both brands
0LlamaIndex ranked higher
0Stack AI ranked higher
Features, pricing & fit
| Dimension | LlamaIndex | Stack AI |
|---|---|---|
| Pricing model | Usage-based | Usage-based |
| Entry price | Free; paid from $50 / mo | Contact sales |
| Free plan | Yes | Yes |
| Deployment | LlamaParse runs as SaaS on a secure cloud tenant, or can be deployed in a customer's private VPC across cloud providers. | Multi-tenant cloud, VPC, or on-premise |
| Integrations | — | 500+ |
| Compliance | SOC 2 Type II, GDPR, HIPAA | HIPAA, GDPR, SOC 2 Type II, ISO 27001 |
| Support | Community, Basic (email), Priority (Slack Connect), Dedicated | Community support on Discord, Email support, Priority support, Dedicated support |
| Founded | — | 2023 |
| Headquarters | San Francisco, California, United States | San Francisco, CA, United States |
| Employees | 11–50 | 51–200 |
| Funding | Strategic minority equity investments (Databricks, KPMG) · $28M raised | Series A · $19M raised |
| Best for | Teams in document-heavy industries such as finance, insurance, healthcare and manufacturing that need accurate parsing of complex tables, charts and scanned pages. | 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
Pros and cons
Themes from the AI answers that mention each brand
LlamaIndex
- Premier choice for RAG-centric agents
- Named as a popular agent development framework
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, “LlamaIndex vs Stack AI”, https://slateindex.ai/compare/llamaindex-vs-stack-ai, data of Nov 3, 2026. Licence: CC BY 4.0.