Keploy vs Testim
Keploy auto-generates API tests from real production traffic using eBPF with zero code changes. Testim (now part of Tricentis) is an AI-powered test automation platform that uses machine learning to create and stabilize web and API tests with smart element locators. Keploy auto-generates API tests; Testim uses AI to make manually authored tests more resilient.
How They Work Differently
Architectural differences that affect your team's workflow, cost, and velocity.
KeployKeploy uses eBPF to record real API calls and responses from your running application, then replays them as regression tests. It auto-generates mocks for downstream dependencies and handles non-deterministic data automatically. No manual test authoring or AI-assisted locators needed for API testing.
TestimTestim provides a visual test authoring environment where teams create web and API tests. Its AI analyzes page structure to create smart locators that resist UI changes. For API testing, it offers a request builder with assertions. Testim was acquired by Tricentis and integrates into the Tricentis ecosystem for enterprise test management.
How They Compare
Click any row to see real-world KPI impact across industries.
KeployOpen Source · 17K+ Stars
TestimWhen to Use Each Tool
Specific scenarios where each tool delivers the most value for your engineering team.
Keploy is the better fit when you need to...
- Want fully automatic API test generation from production traffic
- Need automatic mock generation for databases and downstream services
- Do not need AI-stabilized UI element locators
- Prefer open-source, self-hosted tooling over vendor-locked platforms
- Want tests based on real behavior, not manually authored scenarios
Testim is the better fit when you need to...
- Need AI-stabilized web UI tests alongside API testing
- Want a visual test authoring environment with smart locators
- Are part of a Tricentis ecosystem and want integration with qTest, Tosca
- Need recorded web test playback with AI-powered maintenance
- Prefer a managed cloud platform with built-in analytics and reporting
Real-World Scenarios
How each tool handles the challenges your team actually faces.
Your team ships 50 PRs/week and needs regression coverage
Keploy captures traffic and generates regression tests automatically. Tests run in CI on every PR without any manual authoring or AI training period.
Testim requires initial test authoring, then AI stabilizes tests as the app evolves. At 50 PRs/week, AI maintenance reduces flakiness but initial test creation still needs human effort.
You're migrating from monolith to microservices
Keploy records monolith traffic, generates dependency mocks, and replays against new microservices. Migration verification is fully automated at the API level.
Testim can test new microservice APIs through its API testing module. AI helps stabilize tests during rapid changes, but you must author the initial tests for each new service.
New developer onboarding — writing first tests
New developers run the app with Keploy and get production-based tests immediately. No visual IDE or AI concepts to learn.
Testim's visual interface with AI assistance makes test authoring accessible. New team members can record and edit tests visually, though understanding AI locator behavior takes some time.
FAQs
Yes. Tricentis acquired Testim in 2023. Testim continues as a product within the Tricentis ecosystem, integrating with qTest and Tosca. This means enterprise pricing and sales processes. Keploy remains an independent open-source project.
Testim uses AI to stabilize manually created tests — smart locators, auto-healing, root cause analysis. Keploy uses eBPF to capture real traffic and replay it as tests. Testim makes existing tests more resilient; Keploy eliminates the need to write tests at all.
Testim previously offered a free tier, but after the Tricentis acquisition, pricing is enterprise-focused. Contact Tricentis for current pricing. Keploy is free and open source under Apache 2.0.
Keploy is purpose-built for API testing with traffic capture, mock generation, and regression replay. Testim's strengths are in AI-stabilized web UI testing. For API-only testing, Keploy is more focused and cost-effective.
No. Testim generates tests through recording user interactions or manual authoring. Its AI stabilizes and maintains those tests. Keploy captures network traffic via eBPF and auto-generates complete test suites.
Looking for a Testim Alternative?
Engineering teams evaluating Testim alternatives often compare it with Keploy for API testing and regression coverage. Keploy captures real production traffic via eBPF and auto-generates tests with dependency mocks — requiring zero code changes. If you're considering switching from Testim or comparing Testim and Keploy side by side, the key differences come down to how tests are generated (traffic-based vs manual), how dependencies are mocked (automatic vs configured), and what infrastructure changes are needed (none vs SDK/sidecar/containers).
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