Decide
Side by side.
Two tools, side by side, on the same six pillars. The better number in each row is picked out for you.
PerplexityGleanNotebookLM
The verdict
Choose Perplexity for market & competitive research. Choose Glean for enterprise knowledge discovery. Choose NotebookLM for studying document sets.
Glean leads on security & compliance (+9), integrations & ecosystem (+14) and maturity & reliability (+10). Perplexity and Glean tie for the lead on capability (+2). NotebookLM leads on value for money (+5). Perplexity leads on momentum (+3). On the overall score it isn't close: Glean by 3.1.
| Criteria | Perplexity Perplexity AI | Glean Glean | NotebookLM |
|---|---|---|---|
| TIP Score | 83.1Excellent | 86.3ExcellentBest | 83.2Excellent |
| Capability30% | 87 | 87 | 85 |
| Value for Money15% | 85 | 74 | 90 |
| Security & Compliance15% | 76 | 93 | 84 |
| Integrations & Ecosystem15% | 78 | 92 | 74 |
| Maturity & Reliability10% | 78 | 88 | 76 |
| Momentum15% | 89 | 84 | 86 |
| Category | Search & Research | Search & Research | Search & Research |
| Pricing model | Freemium | Enterprise | Freemium |
| Starting price | Free / $20 per month (Pro) | Custom enterprise pricing | Free / Plus $7.99 / Pro $19.99 (via Google AI plans) |
| Maturity | Established | Mature | Established |
| Pricing transparency | Public tiers + free entry | Custom quotes only | Public tiers + free entry |
| Enterprise readiness | Mid-market ready | Enterprise-ready | Mid-market ready |
| Setup lift (est.) | Days to weeks | Weeks (vendor-led) | Days to weeks |
| Best for | Market & competitive research | Enterprise knowledge discovery | Studying document sets |
| Key risk | Citation quality depends on underlying web sources | Enterprise-only pricing and rollout | Per-notebook source limits constrain very large corpora |
Head to head
The comparisons people ask for most, already written up: verdict, all six pillars, pricing and the catch on each. Only tools that genuinely compete are paired.