Nullify vs Prime Security
Which Code Review AI tool is better in 2026?
Nullify
Prime Security
Agentic product security that reviews designs and code before production
Side-by-side
Prime Security is the more established option (raised $25M); pricing is comparable on both sides.
| Metric | Nullify | Prime Security |
|---|---|---|
| Taglinei | — | Agentic product security that reviews designs and code before production |
| Foundedi | 2022🏆 | 2023 |
| HQi | — | New York, US |
| Employeesi | 11-50 | 11-50 |
| Neuron scorei | 61 | 66🏆 |
| Total fundingi | $12.5M | $25M🏆 |
| Latest roundi | Seed | Series A · Dec 2025 |
| Valuationi | — | — |
| Cheapest paid plani | Pricing not disclosed | Pricing not disclosed |
| Free plani | ✓ | ✓ |
| Free triali | ✓ | ✓ |
| Top tier pricei | Pricing not disclosed | Pricing not disclosed |
| Pricing summaryi | Free | Free |
| Categoriesi |
Capability matrix
Developer-facing capabilities and access signals for Nullify and Prime Security.
| Capability | Nullify | Prime Security |
|---|---|---|
| MCP support | ✗ | ✗ |
| Public API | ✗ | ✓ |
| Webhooks | ✗ | ✗ |
| OAuth 2.0 | ✗ | ✗ |
| SDK languages | — | — |
| Free plan | ✓ | ✓ |
| Free trial | ✓ | ✓ |
| Verified | ✗ | ✗ |
| Active deal | ✗ | ✗ |
🟢 Strengths of Nullify
- More mature (2022)
🔵 Strengths of Prime Security
- Has raised more capital ($25M vs $12.5M)
- Higher Neuron score (66 vs 61)
- Newer company (2023)
Which should you choose?
Choose Prime Security if price matters most — it starts at Free, which is friendlier for teams watching burn. Both AI Code Review tools ship core features, so the cost delta often decides it for small teams and solo operators.
Choose Prime Security if you want the most established option — it has raised $25M, suggesting more runway for enterprise features, support, and long-term roadmap. For mission-critical workflows or larger teams, that stability often outweighs a lower monthly price.
Frequently asked questions
Nullify vs Prime Security — which is better?
It depends on your priority. Nullify is the leaner option; Prime Security has broader feature depth. See the side-by-side table above.
Is Nullify cheaper than Prime Security?
No — Prime Security's cheapest paid plan is Free, while Nullify's is Free.
Do Nullify and Prime Security offer free plans?
Nullify: Yes, has a free plan. Prime Security: Yes, has a free plan.
Explore more AI Code Review tools
Contextual paths to related AI startups, deals and rankings.