Is Kong or Selenium better?

Neither clearly leads. Kong starts at Free and Selenium at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.

Which is cheaper, Kong or Selenium?

Kong starts at Free and Selenium at Free.

Does Kong or Selenium run on more platforms?

Kong runs on Linux, Docker, Kubernetes. Selenium runs on Linux, macOS, Windows, Web.

Can I use Kong for free?

Both have a free tier, so you can try either at no cost before committing.

What is Kong best used for?

Kong is most often used for api gateway management and routing, api development and testing, enterprise api security and governance. Of those, api gateway management and routing and api development and testing are not what Selenium is typically brought in for.

What can Kong do that Selenium cannot?

Kong covers API Gateway, Authentication & Authorization, Rate Limiting, Kubernetes. Selenium covers W3C WebDriver, Many language bindings, Selenium Grid, Broad browser support.

APIs · head to head

Kong vs Selenium

Kong

APIs

Cloud-native API gateway and service connectivity platform

From: Free
Rated: -

Full review Website

Selenium

Testing

Browser automation framework and the W3C WebDriver standard

From: Free
Rated: -

Full review Website

The short version

Each has a real cost: Kong the Plus plan includes 1M API requests a month and charges $200 a month for each additional million; Selenium flaky tests are the standing complaint: explicit waits and synchronisation are the tester’s job, where newer tools handle it automatically
They diverge on capability: Kong covers API Gateway, Selenium covers W3C WebDriver.
Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Kong and Selenium actually diverge.

Attributes where Kong and Selenium differ
Attribute	Kong	Selenium
Pricing model	subscription	Open source, no licence fee
Platforms	Linux, Docker, Kubernetes	Linux, macOS, Windows, Web
Category	APIs	Testing
Founded	2010	Unknown

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Kong

API Gateway
Authentication & Authorization
Rate Limiting
Kubernetes
Consul
Eureka
PostgreSQL
Linux support

Only in Selenium

W3C WebDriver
Many language bindings
Selenium Grid
Broad browser support

What people use each for

The jobs each tool is most often brought in to do.

Kong

API gateway management and routingnot Selenium
API development and testingnot Selenium
Enterprise API security and governancenot Selenium

Selenium

Cross-browser testing where Safari and legacy browsers must be coverednot Kong
Teams whose test suites are written in Java or C# rather than JavaScriptnot Kong
Distributing a large suite across a grid of machinesnot Kong

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Kong

The Plus plan includes 1M API requests a month and charges $200 a month for each additional million
Plus is capped at 10M requests a month, so growth past that forces an Enterprise contract
Plus limits published APIs to 20 and includes one Developer Portal, with a second at $200 a month
SSO and audit logging are Enterprise only
Enterprise pricing is custom and billed annually

Selenium

Flaky tests are the standing complaint: explicit waits and synchronisation are the tester’s job, where newer tools handle it automatically
Setup involves drivers, versions and grid infrastructure that Playwright and Cypress bundle away
Slower to run than tools that talk to browsers over a debugging protocol rather than WebDriver

Pricing, plan by plan

Kong

Free

Kong Konnect Free TrialFree
- 30-day free trial
- Full enterprise functionality
- Unlimited gateways
Kong Konnect Plus$null/month
- Per gateway pricing billed monthly
- Up to 5 Serverless Gateways, 2 Hybrid, 2 Dedicated Cloud Gateways
- 1M API requests included per month
Kong Insomnia EssentialsFree
- Unlimited projects and CLI access
- Up to 3 Git Sync users
- 1,000 mock server requests per month
Kong Insomnia Pro$12/month
- Unlimited users with Git Sync access
- Unlimited organizations
- RBAC

Selenium

Free

SeleniumFree
- Full functionality
- Unlimited tests
- Community support

Which should you pick?

Choose Kong if

You need api gateway.
You want to start without paying.
You work on Linux, Docker, Kubernetes.
You also want authentication & authorization.

Kong review

Choose Selenium if

You need w3c webdriver.
You want to start without paying.
You work on Linux, macOS, Windows, Web.
You also want many language bindings.

Selenium review

Questions people ask

Is Kong or Selenium better?: Neither clearly leads. Kong starts at Free and Selenium at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Kong or Selenium?: Kong starts at Free and Selenium at Free.
Does Kong or Selenium run on more platforms?: Kong runs on Linux, Docker, Kubernetes. Selenium runs on Linux, macOS, Windows, Web.
Can I use Kong for free?: Both have a free tier, so you can try either at no cost before committing.
What is Kong best used for?: Kong is most often used for api gateway management and routing, api development and testing, enterprise api security and governance. Of those, api gateway management and routing and api development and testing are not what Selenium is typically brought in for.
What can Kong do that Selenium cannot?: Kong covers API Gateway, Authentication & Authorization, Rate Limiting, Kubernetes. Selenium covers W3C WebDriver, Many language bindings, Selenium Grid, Broad browser support.

Answered from the vendors’ own pages

Kong: Does Kong offer a free trial?

Yes, Kong Konnect offers a 30-day free trial with full enterprise functionality, unlimited gateways, and no credit card required.

Source

Selenium: Is Selenium free?

Yes, open source with no licence fee. Paid costs come from grid infrastructure or services like BrowserStack.

Kong: How much does Kong Insomnia Pro cost?

Kong Insomnia Pro is $12 per user per month with 15% savings available for annual billing.

Source

Selenium: Selenium or Playwright?

Playwright handles waiting automatically and is faster to set up, which removes most flakiness complaints. Selenium wins on language breadth, browser coverage including Safari, and existing suites you already have.

Kong: What are Kong Konnect Plus API request limits?

Kong Konnect Plus includes 1M API requests per month; additional requests cost $200 per 1M (maximum 10M per month).

Source

Selenium: Is Selenium still relevant?

Yes. Its WebDriver protocol is a W3C standard implemented by every major browser, and very large existing suites are not rewritten cheaply.

Kong: What is included in Kong Insomnia Enterprise?

Kong Insomnia Enterprise is $45 per user per month with SSO, SCIM, vault integrations, unlimited mock server requests, and Konnect integration.

Source

Kong vs Selenium

Kong

Selenium

The short version

Where they differ

What each one covers

Only in Kong

Only in Selenium

What people use each for

Kong

Selenium

Where each one falls short

Kong

Selenium

Pricing, plan by plan

Kong

Selenium

Which should you pick?

Choose Kong if

Choose Selenium if

Questions people ask

Answered from the vendors’ own pages

Related pages

More on Kong

More on Selenium

Keep looking

Other head to heads