Functionize vs Keploy
Which Testing & QA AI tool is better in 2026?
Functionize
AI-powered software test automation platform that uses agentic AI to create, execute, and
Keploy
Open-source AI testing agent that turns real API traffic into tests and mocks
Side-by-side
Functionize is the more established option (raised $67M), but Keploy is cheaper to start.
| Metric | Functionize | Keploy |
|---|---|---|
| Taglinei | AI-powered software test automation platform that uses agentic AI to create, execute, and | Open-source AI testing agent that turns real API traffic into tests and mocks |
| Foundedi | 2015🏆 | 2021 |
| HQi | — | San Francisco, United States |
| Employeesi | 11-50🏆 | — |
| Neuron scorei | 43 | 67🏆 |
| Total fundingi | $67M🏆 | $1.3M |
| Latest roundi | Series B | Seed |
| Valuationi | — | — |
| Cheapest paid plani | Pricing not disclosed | From $24/mo🏆 |
| Free plani | ✓ | ✓ |
| Free triali | ✓ | ✗ |
| Top tier pricei | Pricing not disclosed | Pricing not disclosed |
| Pricing summaryi | Free | Free · From $24/mo |
| Categoriesi |
Capability matrix
Developer-facing capabilities and access signals for Functionize and Keploy.
| Capability | Functionize | Keploy |
|---|---|---|
| MCP support | ✗ | ✗ |
| Public API | ✗ | ✗ |
| Webhooks | ✗ | ✗ |
| OAuth 2.0 | ✗ | ✓ |
| SDK languages | — | — |
| Free plan | ✓ | ✓ |
| Free trial | ✓ | ✗ |
| Verified | ✗ | ✗ |
| Active deal | ✗ | ✗ |
🟢 Strengths of Functionize
- Has raised more capital ($67M vs $1.3M)
- Offers a free trial
- More mature (2015)
🔵 Strengths of Keploy
- Higher Neuron score (67 vs 43)
- Lower starting price ($24/mo)
- Newer company (2021)
Which should you choose?
Choose Keploy if price matters most — it starts at Free · From $24/mo, which is friendlier for teams watching burn. Both AI Testing & QA tools ship core features, so the cost delta often decides it for small teams and solo operators.
Choose Functionize if you want the most established option — it has raised $67M, 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
Functionize vs Keploy — which is better?
It depends on your priority. Functionize has raised more capital and is the more established option; Keploy is cheaper to start. See the side-by-side table above.
Is Functionize cheaper than Keploy?
No — Keploy's cheapest paid plan is Free · From $24/mo, while Functionize's is Free.
Do Functionize and Keploy offer free plans?
Functionize: Yes, has a free plan. Keploy: Yes, has a free plan.
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