Comparison · Research
Perplexity Deep Research vs STORM: which AI agent is better?
A side-by-side look at Perplexity Deep Research and STORM on quality, price, capabilities and trust. Scores measure observable public data; prices come from each vendor's own pricing page. Every fact is sourced and dated.
| Perplexity Deep Research Perplexity AI | STORM Stanford OVAL | |
|---|---|---|
| Agent Score | 59 | 44 |
| Entry price | $20/mo · free plan | Free plan |
| Trust | ✓ VERIFIED | ✓ VERIFIED |
| Capabilities documented | 6 | 3 |
| Free plan | ✓ Yes | ✓ Yes |
| Free trial | — | — |
| Public API | ✓ Yes | — |
| MCP support | — | — |
| Open source | No | ✓ Yes |
| Last verified | 07 Oct 2026 | 30 Sept 2026 |
Score breakdown
| Component | Perplexity Deep Research | STORM |
|---|---|---|
| Capabilities | 75 | 38 |
| Integrations | 25 | Not measured |
| Documentation | Not measured | Not measured |
| Pricing clarity | 100 | 100 |
| Transparency | 100 | 100 |
| Freshness | 100 | 100 |
| Human oversight | 0 | Not measured |
Choose Perplexity Deep Research if…
- You want a higher Agent Score (59 vs 44).
- You want more documented capabilities (6 vs 3).
- You want a public API.
Choose STORM if…
- You want an open-source option.
See the full picture: Perplexity Deep Research · STORM · more Research agents · all comparisons.