Comparison
Abacum vs ChatGPT Deep Research: which AI agent is better?
A side-by-side look at Abacum and ChatGPT Deep Research 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.
| Abacum Abacum | ChatGPT Deep Research OpenAI | |
|---|---|---|
| Agent Score | 42 | 49 |
| Entry price | On quote | $20/mo · free plan |
| Trust | ✓ VERIFIED | DECLARED |
| Capabilities documented | 5 | 7 |
| Free plan | No | ✓ Yes |
| Free trial | — | — |
| Public API | — | ✓ Yes |
| MCP support | — | — |
| Open source | No | No |
| Last verified | 30 Sept 2026 | — |
Score breakdown
| Component | Abacum | ChatGPT Deep Research |
|---|---|---|
| Capabilities | 63 | 75 |
| Integrations | Not measured | 25 |
| Documentation | Not measured | Not measured |
| Pricing clarity | 40 | 100 |
| Transparency | 100 | 100 |
| Freshness | 100 | Not measured |
| Human oversight | Not measured | Not measured |
Choose Abacum if…
On the measured criteria, ChatGPT Deep Research leads — see opposite.
Choose ChatGPT Deep Research if…
- You want a higher Agent Score (49 vs 42).
- You want a free plan to start.
- You want a free plan.
- You want more documented capabilities (7 vs 5).
- You want a public API.
See the full picture: Abacum · ChatGPT Deep Research · all comparisons.