Semgrep vs WitnessAI
Which for Cyber Defense AI tool is better in 2026?
Semgrep
Autonomous code security and static analysis for developers
WitnessAI
AI safety and governance platform for the enterprise
Side-by-side
Semgrep is the more established option (raised $204M), but WitnessAI is cheaper to start.
| Metric | Semgrep | WitnessAI |
|---|---|---|
| Taglinei | Autonomous code security and static analysis for developers | AI safety and governance platform for the enterprise |
| Foundedi | 2017🏆 | 2023 |
| HQi | San Francisco, United States | Atherton, US |
| Employeesi | — | 51-100🏆 |
| Neuron scorei | 75🏆 | 51 |
| Total fundingi | $204M🏆 | $85.5M |
| Latest roundi | Series D · Feb 2025 | Strategic · Jan 2026 |
| 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 | Enterprise · Contact sales |
| Categoriesi |
Capability matrix
Developer-facing capabilities and access signals for Semgrep and WitnessAI.
| Capability | Semgrep | WitnessAI |
|---|---|---|
| MCP support | ✗ | ✗ |
| Public API | ✓ | ✓ |
| Webhooks | ✓ | ✓ |
| OAuth 2.0 | ✓ | ✓ |
| SDK languages | 1 (Python) | 1 (rest) |
| Free plan | ✓ | ✗ |
| Free trial | ✓ | ✗ |
| Verified | ✗ | ✗ |
| Active deal | ✗ | ✗ |
🟢 Strengths of Semgrep
- Has raised more capital ($204M vs $85.5M)
- Higher Neuron score (75 vs 51)
- Offers a free plan
- Offers a free trial
🔵 Strengths of WitnessAI
- Newer company (2023)
Which should you choose?
Choose WitnessAI if price matters most — it starts at Enterprise · Contact sales, which is friendlier for teams watching burn. Both AI for Cyber Defense tools ship core features, so the cost delta often decides it for small teams and solo operators.
Choose Semgrep if you want the most established option — it has raised $204M, 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
Semgrep vs WitnessAI — which is better?
It depends on your priority. Semgrep has raised more capital and is the more established option; WitnessAI is cheaper to start. See the side-by-side table above.
Is Semgrep cheaper than WitnessAI?
No — WitnessAI's cheapest paid plan is Enterprise · Contact sales, while Semgrep's is Free.
Do Semgrep and WitnessAI offer free plans?
Semgrep: Yes, has a free plan. WitnessAI: Paid only.
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