Kernel review (2026): is the free plan enough?
Cloud browser infrastructure for web agents and automations
Black Friday: is there a Kernel sale?
Kernel report card
Fair · out of 4.0 · graded Nov 13, 2026
Best for cloud browsers for web agents
Kernel runs cloud Chromium browsers for agents, with stealth mode, managed logins and session replays. There is a free plan, but every plan adds per-second usage charges, and custom proxies, GPU and regional browsers wait on the $200 Start-Up plan.
Who Kernel is for
- Fits if you run web agents and need hosted browsers with logins that persist
- Works for developers who want session replays to see what an agent did
Who Kernel is not for
- Skip it if you want a point-and-click tool, as this is an API and SDK
- Tight if you stay free: $5 in credits, 5 browsers and 1-day replays
- Pricey if you need custom proxies, GPU or regional browsers, which start at $200 a month
- Watch out: usage is billed on top of every plan, and the monthly credits do not cover the plan fee
- Watch out: the homepage links a notice about a security incident dated around November 2026
Why Kernel gets a 2.0
Five grades, each with its reason. The GPA is their average: an A is 4 points, an F is none.
- CValue for moneyHobbyist is $30 a month plus usage, between the category's $25 middle and $50 dearer-quarter start. The $200 Start-Up plan is where proxies and GPU begin.
- CFree plan and trialThe free plan has $5 of usage credits a month, 5 concurrent browsers and 1-day replays. A real project will use that up.
- CFeaturesStealth, CAPTCHA solving, managed auth, live view and replays are covered. Custom proxies, GPU and regional browsers need the $200 plan.
- DEase of useNo rating on record. You drive it through an API and SDK, so it is a developer setup with code to write.
- BPlatforms and integrationsWeb service with an API and links to Stripe, Anthropic, 1Password and Vercel. No desktop or phone app, and it is cloud only.
What these grades rest on. Graded from this listing, whose facts were read from Kernel's own pages on 13 November 2026. Not based on using the product, and shorter than our full reviews. How we review and grade.
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<a href="https://toolgpa.com/tools/kernel#review"><img src="https://toolgpa.com/badge/kernel.svg" alt="Kernel: 2.0 GPA on ToolGPA" width="196" height="56"></a>Where Kernel stands among AI agents
Kernel's GPA of 2.0 is higher than 64 of the 178 other AI agents we grade, and level with 16.
It stands best on platforms and integrations (B, above 47 of 178) and worst on ease of use (D, above 0).
Its paid plans start at $30 a month, against a middle price of $25 for the category: 59 of the 98 others that charge start lower.
On features, ease of use and platforms it scores 2.0 out of 4. 53 tools score higher and cost less.
Each grade against the category
Every bar is all 179 AI agents we grade, cut by the letter each got. Kernel’s own letter is outlined.
- CValue for moneyAbove 28 of 178, level with 106
- CFree plan and trialAbove 64 of 178, level with 79
- CFeaturesAbove 2 of 178, level with 130
- DEase of useAbove 0 of 178, level with 35
- BPlatforms and integrationsAbove 47 of 178, level with 121
Price against what you get
Each dot is one of 109 AI agents. Further left costs less, and higher up scores better on features, ease of use and platforms. Point at a dot to see which tool it is.
Features, ease of use and platforms, averaged
What paid plans start at, a month (each step along is roughly double) →
- The best score at each price
- Has a free plan
- No free plan
Keep Kernel, or make your own?
Keep it
To replace Kernel you would be making an AI agent, with the models and the safeguards behind it. That is not a weekend's work, with an AI app builder or without one.
It costs $360 a year. Kernel is open source, so there is a third way: take its code and run it yourself.
What you could not
- An AI agent, with the models and the safeguards behind it.
- Connections to other products, each kept working as those products change.
- Recording the screen with its sound, and somewhere to keep the video.
What this rests on. Kernel’s listing: what it does, where it runs, what it plugs into and what it costs. It is a judgement about the kind of software this is. We have not built a replacement for it, and making your own means looking after it too. How we decide, and every tool’s verdict.
What is Kernel?
Kernel runs sandboxed Chromium browsers in the cloud for agents and automations. It includes stealth mode with a CAPTCHA solver and managed proxy, managed authentication for agent logins, vaults and wallet-based payments, live view and session replays. The vendor describes its browser infrastructure as open source.
Worth knowing
- Every plan adds usage costs: headless browsers are $0.0000166667 per second, headful $0.0001333336 and headful with GPU $0.0008000016; idle time is not charged.
- Included monthly credits apply to usage only, not to the plan fee.
- Custom proxies, GPU acceleration, regional browsers and unlimited extensions need Start-Up ($200 a month).
- The homepage links a public notice of a security incident dated around November 2026; read it before choosing.
Key features
- Sandboxed Chromium
- Cloud browsers that start in under 30ms, according to the homepage, with browser pools and a computer controls API.
- Stealth mode
- A CAPTCHA solver and a Kernel-managed residential proxy are attached to browsers; the pricing FAQ says proxies are not charged separately.
- Managed auth and vaults
- Handles logins for agents and stores credentials in vaults, with wallet integrations such as Link by Stripe for agent checkout.
- Live view and replays
- Watch a session live and record it as an MP4 for debugging; replay retention runs from 1 to 30 days by plan.
- GPU and regional browsers
- GPU acceleration for memory-heavy or canvas-based sites and browsers run in the nearest region, on the Start-Up plan and above.
Kernel pricing
As of Nov 13, 2026, Kernel has a free plan, and paid plans start at $30 per month, plus usage.
- Starts at
- $30 per month, plus usage
- Free plan
- $0 a month with $5 of free usage credits each month, 5 concurrent browsers, stealth mode, 3 managed auth connections and 1-day session replays.
- Free trial
- None listed
| Plan | Price | What you get |
|---|---|---|
| Free | $0per month, plus usage | $5 in monthly credits, 5 concurrent browsers, stealth mode, 3 managed auth connections, 3 vaults and 1-day replays. |
| Hobbyist | $30per month, plus usage | $10 in monthly credits, 10 concurrent browsers, unlimited proxy usage, unlimited auth connections and vaults, 7-day replays. |
| Start-Up | $200per month, plus usage | $50 in monthly credits, 150 concurrent browsers, custom proxies, GPU acceleration, regional browsers, 30-day replays. |
| Enterprise | Custom | High browser concurrency, 99.9% SLA, SSO, 24/7 Slack support, HIPAA BAA, white-labeling and zero-data retention. |
Read from kernel.sh on Nov 13, 2026. Prices change, so confirm with Kernel before you buy.
Ways to pay less
- StartupsStart-Up plan free for 3 months
New-to-Kernel companies under 2 years old that have raised $1M or more get the $200 plan free for 3 months with $50 a month in credits. A larger tier gives $5,000 in credits to companies backed by listed funds.
Stated on kernel.sh
Works with
Kernel alternatives
- Kernel vs Browserbase
Free plan · from $20/mo
- Kernel vs Hyperbrowser
Free trial · from $30/mo
- Kernel vs Anchor Browser
Free plan · from $50/mo
- Kernel vs Steel
Free trial · from $250/mo
- Kernel vs Browser Use
Free plan · from $5
Common questions
Does Kernel have an Android app?
No Android app was listed when its pages were read on Nov 13, 2026. Kernel is listed for Web.
Does Kernel have an iPhone app?
No iPhone app was listed when its pages were read on Nov 13, 2026. Kernel is listed for Web.
Is Kernel open source?
Yes. Kernel is open source, according to its own site.
Does Kernel have an API?
Yes. Kernel offers a public API, according to its own site.
Sources for this page
The prices, plans, platforms and features above were read from these pages on Nov 13, 2026.