Every AI agent that acts on the web needs a browser of its own. OpenAI's Operator made that pattern mainstream, and the browser layer is now a budget line that engineering teams have to forecast and defend.
Anchor Browser bills that layer by completed task. Teams look for an alternative when they want an hourly bill they can plan around, faster session starts or room to run their own agent logic. The strongest Anchor Browser alternatives are Solari, Browserbase, Steel, Kernel and Hyperbrowser, and Solari is the best fit for teams that bring their own agent: it starts sessions faster on an open benchmark and runs browsers, sandboxes and desktops from one account. This guide covers why teams move, what each alternative costs and where each one fits.
Why Do Teams Look for an Anchor Browser Alternative?
Most teams outgrow Anchor's billing model before they outgrow its features. Anchor sells monthly credits, charges a fraction of a credit for every completed task and bills overage per credit, without defining a credit further. Turning a month of agent work into dollars takes a sample workload.
That suits a team that wants managed tasks described in plain language. It suits a production team less well once finance asks for a forecast, because the bill counts finished tasks rather than the browser time each one takes.
Stealth is the second reason. Anchor Chromium, Anchor's full stealth solution, starts on its higher tiers, so a team that keeps hitting a protected site faces a large step up the price ladder.
What Should an Anchor Browser Alternative Handle?
A replacement has to cover the jobs your agents run today and the ones on next quarter's roadmap:
A bill you can forecast. Hourly browser pricing turns a workload into a number before the month starts. Multiply the hours your agents run by the rate and you have the budget.
Fast session starts. An agent that opens a fresh session per task pays the start-up cost every time. At thousands of tasks a day, a slow start becomes queue time.
Logins that persist. Most valuable agent work happens behind an account. The browser layer should save a signed-in state, so your agent signs in once rather than on every run.
Sites that block automation. Some sites challenge anything that looks like a bot with a CAPTCHA. You want stealth, proxies and CAPTCHA solving per session, on a plan you can buy today.
Code and screens beside the browser. Agents now write and run code, and models with computer use operate full desktops through a screen. One account for all three saves you a second vendor.
The Alternatives at a Glance
Each alternative answers those jobs differently, and the figure below sorts them by niche.
1. Solari
Solari is the environment your agent runs in: you bring the model and the logic, and Solari supplies the browser, the machine and the screen. Here is what Solari does for a team leaving Anchor:
Sessions that start fast. On Steel's open-source benchmark, across 5,000 runs with Solari's results in a pull request that is still open, Solari averaged 199.9 ms end to end with session create at 8 ms, about 40x faster than Anchor, about 4x faster than Kernel, about 4.5x faster than Steel and about 14.8x faster than Browserbase. Your agent spends its time on the task, not on waiting for a browser.
A bill in browser hours. Solari bills browser time at $0.07 per browser hour on its $200-a-month self-serve plan, and the monthly fee comes back as the same amount in usage credits. You can start free, and there is no end-of-month overage charge.
Thousands of agents for less. Solari supports up to 100,000 concurrent browsers and is about 2x cheaper per browser hour than Browserbase and about 1.6x cheaper than Steel at list prices. You can run a whole task queue in parallel and still estimate the bill before the month starts.
Logins that stay signed in. Solari profiles save a login, its cookies and site data in Playwright's storageState format, so every later session opens already signed in. For sites with 2FA, a person signs in once through a live editor, and auto-login fills credentials from 1Password when a session reaches a login page.
Stealth when a site needs it. Turn on stealth mode per session on any paid plan for sites with bot defenses. It also enables proxies from $4.00 per GB and CAPTCHA solving from $0.005 per solve, while other sites run on the faster default browser.
Bring the agent you have. Solari browsers work with Playwright, Puppeteer and any client that speaks the Chrome DevTools Protocol. You trial Solari on a real workload by changing the connection URL.
The same account runs Solari sandboxes for agent-generated code, with pause, resume, snapshot and fork, and Solari desktops that give computer-use models a full Linux computer, all on one API key and one bill.
2. Browserbase
Browserbase is the incumbent of the category, and it suits teams that want search and fetch beside the browser.
Pricing and plans. Browserbase's $20-a-month developer tier includes 25 concurrent browsers and 100 browser hours, then charges $0.12 per browser hour. Overage is where the bill grows, so the tier rewards a predictable workload.
Where it shines. Every Browserbase tier bundles search calls, fetch calls and agent runs alongside the browsers. That covers some of the managed web work that draws teams to Anchor, without credits.
Trade-off. Browserbase's free tier caps session length and leaves out CAPTCHA solving. Teams leaving Anchor over anti-bot work should check where solving starts on the tier they would land on.
3. Steel
Steel is an open-source browser API for agents, and it fits teams that want the option to run the browser themselves.
Pricing and plans. Steel's $250-a-month scale tier adds usage on top, with browsers at $0.08 per hour and sessions up to 1 hour. That is a straight hourly rate in place of task credits, once you commit to the monthly fee.
Where it shines. Steel Browser is open source and can be self-hosted. A team with data-residency rules can keep the browser inside its own network.
Trade-off. Steel's stealth browser and its longest sessions sit on its enterprise contract. Teams leaving Anchor over stealth meet a similar contract step.
4. Kernel
Kernel is browser infrastructure for agents with managed logins, and its billing rewards agents that sit idle between steps.
Pricing and plans. Kernel's free tier includes stealth mode with a CAPTCHA solver and proxy, and its $200-a-month start-up tier adds usage on top for 150 concurrent browsers. Browsers bill by the second of active runtime, with no hourly price published.
Where it shines. A Kernel browser enters standby soon after its last CDP or Live View activity and stops accruing usage. An agent waiting on a model pays for the time it works, not the time it thinks.
Trade-off. Active-runtime billing is precise but harder to forecast than an hourly rate. HIPAA sits on Kernel's enterprise contract only.
5. Hyperbrowser
Hyperbrowser sells browsers, sandboxes, web data APIs and agents from a shared credit balance, the closest of these to Anchor's bundled approach.
Pricing and plans. Hyperbrowser's $30-a-month startup tier includes the same amount in usage, with automatic CAPTCHA solving and basic stealth mode, and browsers bill at $0.10 per hour on every self-serve tier. A bigger tier buys capacity rather than a lower rate.
Where it shines. Hyperbrowser's hosted agents, HyperAgent and Browser Use, bill per step next to the hourly browsers. A team that likes Anchor's managed tasks can keep that model for some jobs and move the rest to raw browser hours.
Trade-off. Ultra stealth mode sits on Hyperbrowser's enterprise contract only. Credits reset at renewal and do not roll over.
How Do You Choose the Right Alternative?
The choice comes down to how the bill is counted, where stealth sits on the price ladder and who owns the agent logic. Choose Browserbase for search beside browsers, Steel for a self-hostable browser, Kernel for idle-heavy agents and Hyperbrowser for hosted agents beside raw browsers.
Stay with Anchor Browser when plain-language tasks and per-task pricing are why your team signed up. Choose Solari when session speed, an hourly bill and self-serve stealth decide the budget, or when your agent also needs sandboxes or desktops. Anchor Browser is the broader bundle for managed web tasks; Solari is the younger, focused infrastructure company and moves faster on speed and price.
Where Are Browser Agents Going Next?
Over the next year, the browser layer changes in four ways:
Hourly bills over task counts. As agents run every day, finance teams will tie cost to the time a browser runs.
Logins as infrastructure. Saved sign-ins and password-manager login will be standard, because most valuable work sits behind an account.
Browsers, code and desktops together. Agents that research the web will also run code and operate apps with no API, from one provider.
Speed measured in the open. Buyers will ask for benchmarks they can rerun on their own workload.
What stays human is judgment: which tasks to hand to an agent, what it may do under your company's name, and whether the result is right.
Get Started With Solari
Start with the Anchor task your team runs most often: rebuild it as a Playwright script on a Solari session with a profile attached, then compare a week of runs against the hourly bill. Solari is the fastest and cheapest way to run cloud browsers and VMs for browser agents. Get started with a free account and start running your agents today.
