Browserbase alternatives: top 5 competitors compared (2026)

Last updated: August 14, 2026. Latency figures come from browserbench, an open-source benchmark published by Steel. Pricing and feature claims were verified against each vendor's live pricing page and public docs on that date.

Browserbase helped popularize a whole category — cloud browsers for AI agents — and it's a reasonable place to start. But by 2026 the market has grown enough that "which browser infrastructure should I pick?" is no longer a rhetorical question. Cold-start latency, stealth quality, session length, idle billing, and how well the platform plays with your agent framework of choice vary a lot from vendor to vendor.

If you're already on Browserbase and hitting a ceiling — cold starts that stall your agent loop, per-hour costs that scale faster than your feature does, session caps that break human-in-the-loop flows, or a stealth layer that's still getting blocked — this guide is for you. If you're picking your first browser platform, this is the shortlist to run POCs against.

TL;DR

Best overall Browserbase alternative: Kernel. On browserbench, Kernel creates a session in 37ms against Browserbase's 213ms — 5.8× faster — and completes the full create → connect → load → release cycle in 794ms against 2,967ms, 3.7× faster end-to-end. It also ranks #1 on ComputeSDK's independent daily throughput benchmark at 2.3× Browserbase's actions per second. Kernel supports 72-hour sessions against Browserbase's 6 hour cap, no billing for idle time, and powerful stealth capabilities (even on the free plans) to unlock access to even the most bot-protected sites. Kernel is trusted by Cash App, Framer, and 7000+ more teams.

Why teams look for Browserbase alternatives

Browserbase is a capable product with real scale. The reasons teams evaluate alternatives are specific and practical, not ideological.

Speed. Agent loops often acquire a browser, do one action, and release. At a 213ms create call and a 2,967ms end-to-end cycle, an agent doing that a few hundred times per task spends most of its wall-clock time waiting on infrastructure rather than doing work.

Cost. Browserbase bills the wall-clock duration of a session, whether or not the browser is doing anything: browser time is metered by the minute, rounded, with a one-minute minimum per session, against plan allowances and overage rates quoted in browser-hours. In an architecture that holds sessions open between agent steps, or one that waits on a human, you're paying for elapsed time instead of work.

The 6-hour session cap. Any flow where a person reviews, approves, or intervenes overnight has to be rebuilt around that limit.

Framework opinionation. Browserbase heavily promotes Stagehand, its own SDK. That's fine if Stagehand is what you want. If you've already standardized on Playwright, Puppeteer, Browser Use, or a direct CDP integration, you want a platform that treats those as first-class rather than nudging you toward a house framework.

Pricing shape. Browserbase's published tiers (Free, Developer at $20/month, Startup at $99/month, Scale at custom pricing) meter on browser time, concurrent browsers, proxy GB, Search calls, Fetch calls, and agent runs. That's fine at small scale. As agent workloads grow, browser-time meters plus per-GB proxy meters plus per-fetch meters produce bills that are hard to predict and hard to optimize.

Stealth. Every browser-infra vendor has a stealth story. Blocking is an arms race, and no single vendor wins it forever. If your target sites are actively hostile, you want optionality — swapping stealth strategies, bringing your own proxies, or moving to a vendor whose profile isn't already fingerprinted. On Browserbase, stealth mode, proxies, and CAPTCHA solving all start on the $20/month Developer plan.

Closed-box infrastructure. Browserbase's browser infrastructure and Chromium fork aren't public. For teams in regulated industries that need to tell an auditor what's actually executing, that's a procurement problem rather than a preference.

With that framing, here's the shortlist.

1. Kernel

What it is. Kernel is browser infrastructure purpose-built for AI agents and web automations that need to be fast, reliable, and framework-neutral. It runs sandboxed Chromium on unikernels and can colocate your automation code in the same VM as the browser to cut round-trip latency. The infra is open source, and the managed cloud has a free developer plan.

Kernel vs Browserbase

Kernel's technical differentiation and why it matters

Most cloud-browser platforms run Chromium inside containers. Kernel runs each browser inside a unikernel — a stripped-down, single-purpose VM that boots almost instantly and carries almost no OS overhead. Getting there took 14 months of work on snapshots, copy-on-write forking, and UFFD paging, written up in detail here.

Three numbers come out of that work, and they measure three different things:

• Under 20ms browser start, 99% of the time. A hot-pool hit hands off a browser that's already running. The remaining ~1% of requests fall back to a snapshot fork rather than a full cold boot, and still start in under 550ms.
• 30ms P50 / 105ms P99 browser creation, from Kernel's published API benchmark, reported with percentiles and a measurement date.
• 37ms create / 794ms end-to-end on browserbench — the number your client actually waits for, network round trips included, measured by a third party's tool.

The second-order effect matters as much as the first: per-browser resource cost drops far enough that keeping warm capacity around is economically sensible. Kernel's browser pools are built for that — configure a pool size, acquire a browser that's already booted with your configuration applied, and skip both the Chromium restart that some settings trigger and the rate limit on browser creation you'd otherwise hit at volume. Idle browsers in a pool aren't billed, so warm capacity costs nothing until it's working.

Framework support that actually means "any framework"

Kernel treats browser automation frameworks as consumers, not as products it competes with. The same underlying browser works with:

• Playwright — including a Playwright Execution API that runs your TypeScript or Python code inside the browser's VM, eliminating CDP round trips
• Puppeteer
• Chrome DevTools Protocol for anyone driving the browser directly
• WebDriver BiDi for the modern spec-based approach
• Stagehand for teams that like Browserbase's SDK but don't want to be locked into Browserbase's infra
• Browser Use for teams that want a Python-first agent framework
• Computer use for pixel-level visual agents, via a Computer Controls API that drives mouse and keyboard at the OS level and leaves no CDP fingerprint

Kernel integrates with Anthropic (Claude Code, Claude Desktop, Agent SDK, Managed Agents), Google Gemini, OpenAI, OpenAGI, Tzafon, and Yutori, plus MCP server setup for Claude, Claude Code, Cursor, VS Code, Zed, Windsurf, Goose, and OpenCode.

Stealth and anti-detection

Kernel provides stealth-mode browser builds with an auto-CAPTCHA solver — available on the free tier, not gated behind a paid plan — plus a full proxy stack: custom, residential, mobile, ISP, and datacenter proxies, all with health checking. A dedicated hCaptcha solver is available in beta, enabled per organization.

One customer who evaluated primarily on anti-detection quality benchmarked Kernel against Browserbase and measured Kernel performing 10–20% better. It was the deciding factor in their choice to build on Kernel.

For teams that want to signal good behavior rather than hide, Kernel supports Web Bot Auth — cryptographically signing browser requests so target sites can verify the automation is legitimate. Kernel is listed in both Vercel's and Cloudflare's public bot directories, so major CDNs and WAFs verify Kernel traffic automatically.

Headful browsers, not just headless

Kernel runs browsers headful or headless — it's a flag on session create. Browserbase has no equivalent: browserSettings covers
viewport, stealth, OS emulation, and captcha behavior, but not display mode. Headful performs best for bot detection. Headless is a fingerprinting signal in its own right, and detection vendors probe for the artifacts it leaves — missing GPU-backed rendering, absent or degraded WebGL and canvas output, no real display metrics. A headful browser doesn't have those tells, because there's an actual display and GPU behind it. On Kernel headful costs $0.48/hr against $0.06 headless, so you can spend it where the target is hostile; on Browserbase it isn't a lever you have.

Session persistence and 72-hour sessions

Kernel's browser profiles are a first-class primitive for persisting and reusing browser session state — cookies, local storage — across browsers. Combined with managed authentication (hosted login UI, embeddable React component, or programmatic credential submission), "log in once, use forever" is a supported workflow instead of a hack you build yourself.

Sessions on Kernel can stay alive for 72 hours against Browserbase's 6-hour cap, and idle time isn't billed. That combination is what makes human-in-the-loop practical: pause a browser at the end of the day, resume from the exact same point — same live view, same DOM state — two days later, without paying for the wait.

Managed auth also includes automatic re-authentication, credential health checks, and an event timeline for every login attempt, which turns "the login broke and the agent's stuck" from a 2am pager into a dashboard item. Credentials are encrypted with per-organization keys, write-only after creation, and never passed to an LLM.

Observability

Every session can be watched live, recorded as an MP4 replay, and inspected via real-time telemetry streamed as server-sent events, with optional OTLP export into your own collector. Screenshots, logs, and event timelines are first-class, and telemetry is opt-in per category so you capture only what you need. One customer, Felicity, doubled its automation performance and eliminated 12 hours of monthly debugging after moving to Kernel.

Open source

Kernel's browser image, SDKs, and Hypeman — the sandbox orchestrator underneath the platform — are open source. Browserbase open-sources Stagehand, but its browser infrastructure and Chromium fork are closed. If you're in a regulated industry and need to tell an auditor what's actually executing, one of those answers is readable and the other is a conversation with a sales engineer.

Beyond browsers

Kernel also ships a serverless compute platform for deploying agents: write your agent, run kernel deploy, and get a hosted invocable endpoint with logs, secrets management, deployment history, and audit logs. Browserbase ships a comparable layer in Runtime.

Enterprise essentials

SOC 2 compliance on every plan, organization-level project isolation, scoped API keys with rotation and grace periods, and audit logs for API requests. Audit log search and export start at Start-Up; continuous S3 audit-log export, HIPAA (BAA), and zero data retention are enterprise features. Concurrency limits are configurable at the organization and project level.

Worth noting

Some capabilities are plan-gated: GPU acceleration and configurable/BYO proxies start at Start-Up ($200/month), and HIPAA BAA plus zero data retention are enterprise. The hCaptcha solver is in beta and enabled per organization.

Pricing

Developer (free + usage, $5 monthly credits, 5 concurrent), Hobbyist ($30/month + usage, $10 credits), Start-Up ($200/month + usage, $50 credits), Enterprise (custom). Overage is $0.06/hr headless and $0.48/hr headful. Idle browsers aren't billed. See the Kernel pricing page.

2. Browser Use

What it is. Browser Use ships two things worth keeping straight. The SDK is an open-source Python framework that lets an LLM drive a browser through an agent loop rather than raw selectors — you hand it a task and a model, and it plans the clicks and typing itself. It talks to Chromium over CDP, so it runs against any CDP endpoint, including every managed platform in this post. Browser Use Cloud is a separate paid product that hosts the browsers and competes with the other managed platforms here.

The hosted API executes tasks against remote browsers with multi-turn sessions, always-on stealth, CAPTCHA handling, and residential proxies across 195+ countries. Session recordings and live preview help with debugging.

Pros

• Natural-language task API — genuinely useful if you don't want to write browser code
• Popular, well-known open-source library with a large community
• Three deployment models (hosted agents, managed infra, self-hosted OSS)
• Cheap browser-time meter at $0.02/browser-hour, billed by the minute with a one-minute minimum
• Residential proxies across 195+ countries; BYO HTTP/SOCKS5 proxies also supported
• Second-highest ComputeSDK throughput score at 70.1, ahead of Browserbase

Cons

• The abstraction level is higher than Kernel or Browserbase — great when you want it, in the way when you don't
• Model costs are billed separately and typically dominate the bill. The headline $0.36/1M input and $1.44/1M output applies to the default MiniMax M3 model; premium models cost far more (Claude Opus 5 is $6.00/$30.00 per 1M)
• Proxy traffic is metered on top: $5/GB residential ($4/GB on Scaleup), $0.20/GB direct
• Less positioned for "I just want a fast, controllable browser" — you take the agent's opinion about how to drive the browser along with the browser

Pricing

Free ($0, 3 concurrent sessions, 10 agent tasks/month), Dev ($29/month, 25 concurrent), Business ($299/month, 200 concurrent), Scaleup ($999/month, 500 concurrent), Enterprise (custom). Browser time is $0.02/hour with model tokens metered on top of the plan fee.

3. Anchor Browser

What it is. Anchor Browser is the one platform here that isn't really selling browser sessions — it's selling deterministic replay of workflows you've already solved once. Its Web Action Cache records the Playwright selectors an LLM produces on the first run against a domain, then replays those clicks directly on every subsequent run instead of paying for another reasoning pass. If a cached selector stops resolving, that entry is dropped and the run falls back to the original agent logic. That design, not the compliance list, is what makes Anchor a genuinely different product: it's built for the same flow executing thousands of times, where per-run model cost dominates the bill and the page rarely changes.

The rest of the platform lines up behind that shape. Anchor VPN is a vendor-operated network backbone offered as an alternative to third-party proxies — a fixed egress path rather than a rotating pool of consumer devices, which matters when the target allowlists IPs or when a security team objects to residential proxies on principle. OmniConnect handles authentication for computer-use agents. Anchor also publishes an IT-and-security automation practice, which is the honest read on its ICP: internal enterprise systems more than the open web.

Pros

• Web Action Cache — the strongest answer in this list to "we run the same workflow 10,000 times and the model bill is the problem." First run pays full price; later runs replay deterministic clicks
• Graceful degradation: a stale cached selector falls back to agent logic instead of hard-failing the run
• Built-in VPN gives a predictable egress path for allowlisted or internal targets, without a third-party proxy vendor in the chain
• Documented MCP support and OmniConnect auth for computer-use agents
• Deep enterprise compliance coverage: SOC 2 Type 2, ISO 27001, and GDPR on Growth and above; HIPAA, BAA, and DPA on Enterprise; EU data residency (AWS eu-central-1) on Growth

Cons

• Slowest provider in browserbench by a wide margin — 3,797ms to create a session and 8,001ms end-to-end, and the only provider that didn't complete every run (97.3%). Caching cuts reasoning cost per run, not the cost of standing up a browser, so this is a real tax on any workload that opens sessions frequently
• The cache only pays off on stable, repeated flows. Exploratory agents, one-off tasks, and sites that change their DOM regularly land back on the full-price path
• Anchor's site claims 12× faster, 80× fewer tokens, and 23× lower error rates, but names no comparison set, methodology, or percentiles — and the 12× sits awkwardly next to the browserbench result above. Ask for the benchmark before you price against it
• Enterprise-priced: Team at $500/month, Growth at $2,000/month, and the plan fee is only part of the bill
• Layered metering on top: 0.1 credits per completed task with $1.00/credit overage, plus $0.05/browser-hour, $0.01/browser creation, $0.01/AI step, and $8/GB of Anchor proxy data
• Free tier is thin at 5 credits/month — not enough to seriously evaluate

Pricing

Free ($0, 5 credits/month, 5 concurrent), Starter ($50/month, 50 credits, 25 concurrent), Team ($500/month, 500 credits, 50 concurrent), Growth ($2,000/month, 2,000 credits, 200 concurrent), Enterprise (custom, 500+ concurrent). Metered usage is billed on top.

4. Steel

What it is. Steel takes the open-source-first approach: the core browser is a Dockerized OSS project (steel-browser on GitHub) you can run locally or self-host, with a managed cloud service for teams that don't want to operate it. Steel also publishes browserbench, the benchmark tool used in this post — a genuinely good thing for the category, and worth noting that their own numbers on it are strong: 182ms create and 894ms end-to-end at 100% success, second only to Kernel.

Framework-agnostic (Puppeteer, Playwright, Selenium, custom), with built-in CAPTCHA solving, proxy and fingerprint controls, cookie and localStorage persistence, and a live session viewer.

Pros

• True open-source option — self-host the exact browser you'll run in production
• Second-fastest end-to-end in browserbench at 894ms, with 100% success
• Long session duration, up to 24 hours
• Framework-agnostic
• Freemium hosted tier with $30 in one-time credits; Scale includes $100/month in credits
• HIPAA-ready BAA and enterprise SSO on the $250/month Scale plan — unusually accessible at that price point

Cons

• 182ms session create is roughly 5× slower than Kernel's 37ms, and ComputeSDK measures a 5.56s median task duration with a 13.67s p95 — a tail more than twice the median
• Hosted Scale tier starts at $250/month — cheaper than Anchor, pricier than Browserbase Developer
• Self-hosting means you own the ops burden: patching Chromium, scaling concurrency, running the proxy layer
• Stealth Browser and reserved browser pools sit on Enterprise, so the plan you can self-serve isn't the full product

Pricing

Launch (free + $30 one-time credits), Scale ($250/month + usage, $100/month credits), Enterprise (custom).

5. Cloudflare Browser Run

What it is. Cloudflare Browser Run is Cloudflare's serverless headless-Chromium offering, tightly integrated with Workers, Durable Objects, and the rest of the Cloudflare edge. It offers two access modes: Quick Actions (stateless REST endpoints for screenshots, PDFs, markdown conversion, structured JSON extraction, link extraction, and crawling) and Browser Sessions (full Puppeteer, Playwright, CDP, or Stagehand control).

Available on Cloudflare Free and Paid plans. Sessions run on Cloudflare's edge network, so latency to end-user targets can be excellent when your workload is globally distributed, and sessions can be reused across requests to cut cold-start overhead.

Pros

• Edge-native — sessions run close to your users automatically
• Quick Actions eliminate deployment friction for simple jobs
• Deep integration with Workers, Durable Objects, and R2
• Session reuse across requests, with Durable Objects for persisting sessions globally
• MCP support via Playwright MCP

Cons

• Purpose-built for the Cloudflare stack — much less compelling if you're not already there
• No documented stealth or anti-detection story, which rules it out for hostile target sites
• Session persistence is session reuse, not a durable profile primitive — no managed auth, no hosted login UI
• No published cold-start figures, not present in browserbench, and no session recording as a first-class product feature

Pricing

Included with Cloudflare Free and Paid plans. See the Cloudflare Browser Run docs for current limits and billing.

Full feature comparison

Latency columns are browserbench averages (January 2026, 5,000 runs per provider). Pricing and features as of August 14, 2026.

Framework support is broadly comparable across the managed platforms — all of them speak Playwright, Puppeteer, and CDP — so it's covered per-vendor above rather than repeated here. "Not documented" means the vendor doesn't describe the capability in public docs as of August 14, 2026. Where a capability exists only on a higher plan, we name the plan, including for Kernel.

How to choose

What's the primary constraint on your agent right now?

• You need speed and throughput → Kernel. 5.8× faster session creation and 3.7× faster end-to-end than Browserbase on a third party's tool, plus browser pools when you want acquisition off the critical path entirely.
• Your workflows are <1 minute long, or include idle time → Kernel. Idle time isn't billed, and 72-hour sessions mean pause-and-resume instead of teardown-and-rebuild. Kernel charges by the second—not by the minute—which keeps costs lower for short workflows.
• You want to hand tasks to a natural-language agent → Browser Use. That's the abstraction they've built.
• The same workflow runs thousands of times and the model bill is the problem → Anchor. Web Action Cache replays solved flows as deterministic clicks instead of re-reasoning every run.
• You want to self-host the exact browser you'll run in prod → Steel. The only fully OSS-first managed option here.
• You're already deep in Cloudflare → Browser Run. Zero-friction integration with Workers.
• You want a fixed-price monthly plan and a known brand → Browserbase's Developer ($20) or Startup ($99) tiers are convenient if none of the constraints above bind.

Run the benchmark yourself. browserbench is open source and published by a competitor, which is the whole reason it's worth citing.

FAQ

What is the best Browserbase alternative in 2026?

Kernel is the best Browserbase alternative. On browserbench it creates sessions in 37ms against Browserbase's 213ms (5.8× faster) and completes the full lifecycle in 794ms against 2,967ms (3.7× faster), and it ranks #1 on ComputeSDK's independent daily throughput benchmark at 2.3× Browserbase's actions per second. It also doesn't bill idle time, supports 72-hour sessions against Browserbase's 6-hour cap, ships stealth on the free tier, and covers the broadest documented framework surface here. Teams running one stable workflow at very high volume may prefer Anchor Browser for its Web Action Cache; teams committed to Cloudflare Workers may prefer Cloudflare Browser Run.

Why would I switch from Browserbase?

Four reasons come up repeatedly: cold-start latency in agent loops that acquire and release browsers frequently, paying for idle time on sessions that are open but not working, the 6-hour session cap blocking human-in-the-loop flows, and framework opinionation toward the house Stagehand SDK. Teams targeting hostile sites also cite stealth ceilings, and the fact that stealth and CAPTCHA solving both start on the paid plan. If none of those apply to your workload, Browserbase remains a reasonable choice.

Is Kernel a drop-in replacement for Browserbase?

Kernel supports the same core frameworks Browserbase does (Playwright, Puppeteer, CDP, Stagehand) plus additional ones (WebDriver BiDi, Browser Use, computer use). Most migrations involve swapping the connection endpoint and updating any Browserbase-specific SDK calls:

// Before
const session = await bb.sessions.create({ projectId });
const browser = await chromium.connectOverCDP(session.connectUrl);

// After
const kernelBrowser = await kernel.browsers.create({ stealth: true });
const browser = await chromium.connectOverCDP(kernelBrowser.cdp_ws_url);

Session persistence via Kernel's profile primitive maps cleanly to Browserbase's context primitive. Managed authentication and stealth features have equivalents on both sides, though they aren't identical — validate your specific login flows and target sites during a POC.

How does Kernel's cold start compare to competitors?

Kernel publishes three figures because they measure three different things. End-to-end acquisition — create, connect over CDP, load a page, release — is 794ms on browserbench, against Browserbase's 2,967ms, Steel's 894ms, Hyperbrowser's 3,657ms, and Anchor's 8,001ms. The session create call alone is 37ms, against Browserbase's 213ms. Browser start time from Kernel's hot pool is under 20ms, 99% of the time, with a snapshot-fork fallback under 550ms for the remaining ~1%, and Kernel's own API benchmark reports 30ms P50 / 105ms P99 with a measurement date.

Browser pools take acquisition off the critical path entirely: the browser is already booted with your configuration applied, so you skip the Chromium restart that custom viewports, extensions, or profiles would otherwise trigger.

Which Browserbase alternative is cheapest?

Depends on what you're paying for. On raw browser time, Browser Use's $0.02/hour is the lowest published per-hour rate, though model tokens and $5/GB proxy traffic are billed separately and typically dominate the bill. Cloudflare Browser Run is effectively free within existing Cloudflare plan allowances. Kernel offers a generous free tier, and their $0.06/hr headless rate is half Browserbase's $0.12/hr Developer rate. If your runs last less than a minute, Kernel is the best choice because they charge per second—and because idle time isn't billed and runs finish faster, the effective gap is larger than the headline. Anchor is the most expensive at the mid-market tier, and its layered meters make totals hard to estimate up front. Run a POC on your own workload shape before deciding on price alone.

Can I self-host a Browserbase alternative?

Steel publishes its core browser as an open-source Docker container you can run locally or on your own infrastructure, and Browser Use's core library is open source too, though the hosted agent API and infrastructure are commercial. Kernel is a hosted platform but open-sources its browser image, SDKs, and the Hypeman orchestrator underneath it, so you can read what runs your browsers even though you don't operate them. Browserbase and Anchor are managed cloud only; Browserbase discusses private cloud, VPC, and residency arrangements with enterprise customers but doesn't ship a self-hosted package. If you have a contractual self-hosting requirement, start with Steel.

Which platform is best for AI agents specifically?

All of them target AI agents in some form, but they own different layers. Kernel focuses on the browser infrastructure layer with framework-agnostic support and the lowest measured acquisition latency and highest measured throughput of the group. Browser Use provides the agent framework itself with hosted execution. Anchor optimizes for repeat execution, caching solved workflows as deterministic code so later runs skip the model. Cloudflare Browser Run integrates browsers into the Workers story. The right choice depends on how much of the stack you want the vendor to own — and if the answer is "just the browser, and make it fast," that's the case for Kernel.

Do any of these platforms support MCP?

Most of them. Kernel ships a hosted MCP server using OAuth 2.1 with dynamic client registration, with documented setup for Claude, Claude Code, Cursor, VS Code, Zed, Windsurf, Goose, and OpenCode. Browserbase ships an MCP server in both hosted Streamable HTTP and local stdio modes. Browser Use supports MCP. Anchor documents MCP support. Cloudflare Browser Run supports MCP via Playwright MCP. Steel does not document an MCP server at the time of writing.