Glean vs Perplexity
A side-by-side comparison of capabilities, autonomy, integrations, and pricing to help you choose.
Short answer: choose Glean if you want enterprise work ai platform: permission-aware search, assistant, and agents (Supervised agent, enterprise); choose Perplexity if you want ai answer engine with supervised research, agentic browsing, and shopping (Supervised agent, freemium).
| Glean | Perplexity | |
|---|---|---|
| What it is | Enterprise Work AI platform: permission-aware search, assistant, and agents | AI answer engine with supervised research, agentic browsing, and shopping |
| Type | platform | product-with-agents |
| Autonomy | Supervised agent | Supervised agent |
| Pricing | enterprise | freemium · Free; Pro $20/mo |
| Best for | enterprise, mid-market, developers | consumers, developers, enterprise |
| Deployment | saas, self-hosted | saas, api |
| Modalities | text, api | text, browser, api |
| Models | model-agnostic, gpt, claude, gemini | proprietary, model-agnostic, gpt, claude, gemini |
| Protocols | mcp, rest-api | mcp, rest-api |
| Integrations | Slack, Google Workspace, Jira, Salesforce, Confluence, GitHub | Slack, GitHub, Notion, Gmail, Google Calendar, Shopify |
| Capabilities | 5 documented | 5 documented |
Glean
- +Best-in-class unified, permission-enforced index across many apps with citation-grounded answers
- +Genuinely model-agnostic and open: MCP host plus server, bring-your-own model, and on-prem deployment
- +One governed platform spanning search, assistant, and agents with built-in certification and monitoring
- -Opaque, expensive pricing with high seat minimums and add-on fees; reported fully-loaded deployments run into the hundreds of thousands
- -The autonomous-agents marketing outpaces demonstrated autonomy; in practice agents are supervised
Perplexity
- +Citation-grounded answers are verifiable, a real advantage over uncited chatbots
- +Model flexibility: not locked to one LLM, with a proprietary search-tuned Sonar family plus frontier models
- +Genuine breadth from quick answers to research, deliverables, and agentic browsing in one product
- -The agentic features are supervised, not autonomous, and hallucination risk persists despite citations
- -Tier proliferation with the best features gated behind paid or US-only access
Which should you choose?
Glean is enterprise work ai platform: permission-aware search, assistant, and agents, best for enterprise, mid-market, developers. Perplexity is ai answer engine with supervised research, agentic browsing, and shopping, best for consumers, developers, enterprise. The right choice depends on the autonomy level you want, your existing integrations, and your budget, all compared above.