k6 vs Keploy: Pricing and Ratings Compared (2026)
Entry prices and free plans as read on each vendor's pricing page, and user ratings as published on review sites, for k6 and Keploy side by side. This page compares data; it is not a hands-on review.
On the data: On the data below the two are close or not directly comparable, so we do not name a winner for this pair.
Short on time? Here's the quick answer
Based on published vendor pricing and features and on public review data, here's who should pick what:
k6
Load testing tool for developers
Best for you if:
- • You want developer-friendly load testing
Keploy
AI-powered API testing that records and replays real traffic
Best for you if:
- • You want automatically generates test cases from real API traffic, reducing manual test-writing effort
| At a Glance | k6 | |
|---|---|---|
Starts at | Free plan | Free plan, paid from $19/year Pro plan |
Category | Testing & QA API Tools | Testing & QA Developer Tools |
Rating | 4.9/5 G2 4.8 · Capterra 5.0 34 reviews | 4.9/5 G2 4.9 50 reviews |
Free plan | Yes | Yes |
Watch out for | Enterprise minimum $25K/year | Overage charges for usage beyond Pro credit |
Choose k6 or Keploy?
Choose k6 if
- You want developer-friendly load testing
- You want JavaScript scripts
Choose Keploy if
- You want automatically generates test cases from real API traffic, reducing manual test-writing effort
- You want open-source and free to use, making it cost-effective for startups and development teams
In-Depth Analysis
k6
Load testing tool for developers
k6 open source is excellent for load testing.
Watch out
Enterprise minimum $25K/year
Strengths
- Pro: Developer-friendly load testing
- Pro: JavaScript scripts
- Pro: Good CLI
- Pro: Open source
- Pro: Grafana integration
Weaknesses
- Con: Learning curve
- Con: Cloud expensive
- Con: Browser testing limited
- Con: Documentation could improve
- Con: Less GUI than alternatives
Key features
Keploy
AI-powered API testing that records and replays real traffic
Keploy's Playground tier is incredibly generous, offering significant testing capabilities for free, making it highly accessible for individual developers and small teams.
Watch out
Overage charges for usage beyond Pro credit
Strengths
- Pro: Automatically generates test cases from real API traffic, reducing manual test-writing effort
- Pro: Open-source and free to use, making it cost-effective for startups and development teams
- Pro: Supports API testing, regression testing, and mock testing in a single workflow
- Pro: Helps improve test coverage by capturing real-world application behavior
- Pro: Integrates smoothly with CI/CD pipelines for automated testing workflows
Weaknesses
- Con: Primarily focused on backend and API testing rather than frontend UI testing
- Con: Usage limits may feel restrictive on certain plans
Key features
Plans and prices: k6 vs Keploy
| Tool | Plans and prices | Source |
|---|---|---|
| k6 |
| k6.io read Oct 3, 2026 |
| Keploy |
| keploy.io read Oct 19, 2026 |
Prices as read on each vendor's own pricing page on the date shown. Plans are listed per tool and are not matched against the other tool's plans: a plan name or price in one column says nothing about the same row in the other. Details on k6 pricing and Keploy pricing.
Key Takeaways
k6
- Choose if you want load testing tool for developers
Keploy
- Choose if you want AI-powered API testing that records and replays real traffic
What the data shows
On the data below the two are close or not directly comparable, so we do not name a winner for this pair.
- User ratings are within 0.2 points (4.9/5 from 34 reviews for k6, 4.9/5 from 50 reviews for Keploy).
- Keploy starts at $19/year; k6 has no public paid plan price on file.
- Both have a free plan.
Criteria: user rating (only above 20 reviews on both sides, gap of 0.2 or more), entry price (only on the same billing basis), free plan. How we rate
Frequently Asked Questions
How do k6 and Keploy compare in 2026?
On the data below the two are close or not directly comparable, so we do not name a winner for this pair. User ratings are within 0.2 points (4.9/5 from 34 reviews for k6, 4.9/5 from 50 reviews for Keploy). Keploy starts at $19/year; k6 has no public paid plan price on file. Both have a free plan.
What are k6 and Keploy used for?
k6: Load testing tool for developers. Keploy: AI-powered API testing that records and replays real traffic.
What does k6 cost vs Keploy?
k6 has no public paid-plan price on file. Keploy's cheapest paid plan is Pro at $19/year; it also has a free plan. Prices read on the vendors' pricing pages, latest check Oct 19, 2026.
What's the main difference between k6 and Keploy?
k6's main strength: developer-friendly load testing. Keploy's main strength: automatically generates test cases from real API traffic, reducing manual test-writing effort.