Anchor Browser vs. Skyvern: build-time runtime or workflow platform?

Anchor Browser and Skyvern collide when a company says "we need agents for portal work" before deciding who will own the automation. If engineering is building a product and login reliability is the bottleneck, Anchor is the substrate: headful Chromium plus OmniConnect, Anchor VPN, 1Password, and Fingerprint Web Bot Auth. If operations is replacing a spreadsheet-and-SOP process across vendor portals, Skyvern is the product: Vision-LLM execution, YAML workflows, hosted UI, n8n/Zapier/Make integrations, and OSS self-host. The useful question is not "which browser agent is better?" It is "are we building an agentic product or deploying a back-office workflow?"

At a glance

Skyvern is absent from the public Browser Arena leaderboard (browserarena.ai) by design — it's a workflow platform on top of someone else's browser, not a Chromium runtime, so the leaderboard's session-shape methodology doesn't apply. Anchor ranks #5 on the same leaderboard: slower than the speed leaders, but one of the low-cost options. Comparing the two on raw infra speed is the wrong axis: the choice is category, not cold-start.

What is Anchor Browser?

Anchor Browser is a cloud-hosted, headful Chromium runtime — "Anchor Chromium," a purpose-built fork — for AI agents on auth-heavy enterprise web. The bet on headful is deliberate: vision-model fidelity for screenshot-driven agents and bot-detection resistance versus headless. The product surface stacks identity primitives that compose: OmniConnect for credential onboarding, MFA/TOTP, and self-healing session recovery; Anchor VPN for dedicated enterprise IPs from telecom partners; 1Password Unified Access for managed-vault credential retrieval; Fingerprint Authorized AI Agent Detection (RFC 9421 Web Bot Auth); Cloudflare Verified Bots; Coinbase x402; Replicate (record human demonstration, agent reproduces it). b0.dev is the build-time-deterministic agent paradigm — coding agents synthesize reusable scripts at plan time, runtime AI only handles ambiguity, claimed 24x speed and 80x token reduction. Reported benchmarks include 89% on WebVoyager and 28 actions/min co-located with Groq. $6M seed; partners include Anon, Groq, Yutori, Composio, Browser Use.

What is Skyvern?

Skyvern is an open-source AI browser-automation platform that uses Vision-LLMs plus a planner-actor-validator agent loop to drive websites the way a human would — by looking at screenshots and clicking what looks like the right element, instead of binding to XPath or CSS selectors. The product is positioned as the modern replacement for traditional RPA (UiPath, Automation Anywhere, Power Automate) and is heavy on regulated/portal-driven verticals: healthcare/EHR, insurance quoting, government/regulatory form filing (SS4, IRS forms, tax filings), procurement and accounts-payable workflows, payroll, mortgage, job applications. Skyvern 2.0 reports 85.85% on WebVoyager with the full eval published openly at eval.skyvern.com. The product surface includes multi-step YAML workflows, cross-site workflows that run across many vendor portals, native 2FA/TOTP, CAPTCHA solving, structured JSON/CSV extraction with schema validation, credential vault integrations with Bitwarden/1Password/Azure Key Vault, an MCP server, and Zapier/Make/n8n integrations. SOC 2 Type 2 + HIPAA. $2.7M seed (Dec 2025); 3,000+ GitHub stars after the HN launch. Cloud pricing is approximately $0.10 per step or page, contrasted with per-bot RPA pricing ($300–$1,570/month UiPath/AA).

How they compare

Category: build-time runtime vs. deploy-time workflow platform

This is the load-bearing distinction. Anchor sells a runtime that engineers code against — a Python/TS SDK plus CDP-compatible cloud Chromium where the auth stack is already integrated. Skyvern sells a platform that ops teams deploy against — YAML workflows, hosted UI, n8n/Zapier/Make integrations, and a Vision-LLM agent that drives the browser. If your team is a small group of engineers building an agentic product where the agent's behavior is your differentiator, Anchor is a substrate. If your team is an ops or business-process owner replacing SOPs, RPA bots, or manual portal work where the value is "log into Workday and download invoices from 50 supplier portals every Monday," Skyvern is a platform.

Where the handoff lives

The practical distinction is ownership after launch. With Anchor, engineering still owns the workflow code, retries, schema validation, scheduling, and product UX; Anchor makes the browser and auth layer less fragile. With Skyvern, the workflow itself is the artifact: an ops team can inspect a run, edit YAML, connect credentials, and route outputs without owning a browser-runtime stack. If the project will live in your application codebase, Anchor fits. If it will live as an operational process with non-engineers watching failures, Skyvern fits.

Identity in the runtime vs. credentialing in the workflow

Anchor's identity primitives are a runtime stack: OmniConnect, Anchor VPN, 1Password Unified Access, Fingerprint Web Bot Auth, all composed at the platform layer. Anchor signs every request with RFC 9421 and registers in Fingerprint's Bot Directory.

Skyvern's credentialing is workflow-level: a native credential vault plus integrations with Bitwarden, 1Password, and Azure Key Vault, with TOTP support and the guarantee that credentials never reach the LLM. This is fine for single-account-per-workflow ops use cases and is the standard pattern for enterprise RPA replacement. Skyvern has no equivalent of Web Bot Auth signing — that's an axis where Anchor is genuinely ahead.

The vision agent

Skyvern's signature differentiator is the Vision-LLM agent — the planner-actor-validator architecture that takes a screenshot, identifies elements visually, and validates each action's outcome by re-inspecting the screen. This is genuinely resilient to layout/CSS changes in a way that XPath-bound automation isn't, and it's why Skyvern markets to ops teams who don't want to maintain selectors. The 85.85% WebVoyager run is published openly; the Web Bench (5,750 tasks across 452 sites) is co-built with Halluminate and focuses on WRITE tasks (forms, logins, downloads) where most agents fail.

Anchor doesn't have a vision-agent product in the same shape. Anchor's bet is that headful Chromium gives any vision-LLM (Claude CUA, OpenAI CUA, Gemini Computer Use) better fidelity, and that b0.dev's build-time compilation reduces the cost of running the LLM per action. These are different product shapes — Skyvern owns the agent reasoning; Anchor owns the runtime that any agent can run on.

Pricing model

Skyvern's pricing is per-step or per-page at approximately $0.10 on Cloud, with OSS self-host fully free. The published model is "transparent pricing, no surprises" with Basic/Pro/Enterprise tiers (no public dollars on the higher tiers). The OSS path is a hard wedge for compliance-sensitive teams that need self-host inside their VPC.

Anchor's pricing splits across browser hours, bandwidth, AI steps, and session init — fine-grained but harder to forecast across spiky workloads. The free tier exists for testing, but there is no OSS self-host option. For ops teams that want a known per-action cost, Skyvern's $0.10/step is more legible.

Productization layer

Skyvern is a fully-productized platform: workflows, hosted UI, scheduling, integrations with Zapier/Make/n8n, structured output schemas. The deliverable is a deployed workflow that runs on Skyvern's substrate. Anchor is a runtime — the deliverable is a CDP endpoint your code talks to. b0.dev compiles agent flows to deterministic scripts but doesn't ship cron + webhooks + a deployed Function endpoint. If your team wants a fully-managed orchestration surface where the workflow itself is the artifact, Skyvern is the platform; if your team wants to ship its own product on top of a runtime, Anchor is the substrate.

When to choose Anchor Browser

Pick Anchor when an engineering team is shipping an agentic product where the agent's behavior is your differentiator, the workloads are auth-heavy on regulated portals, and headful Chromium with a coherent identity stack (OmniConnect, Anchor VPN, 1Password, Fingerprint) is the substrate you want to build on.

When to choose Skyvern

Pick Skyvern when an ops or business-process team is replacing SOPs, RPA bots, or manual portal work — procurement/AP workflows across many supplier portals, healthcare/EHR integration, government form filing, insurance quoting — and you want a platform with a Vision-LLM agent, YAML workflows, n8n/Zapier integrations, OSS self-host, and SOC 2 + HIPAA. The category fit is sharp; the per-step pricing is easy to budget; the cross-site workflow capability is what procurement teams actually need.

A third option: Notte

A third option worth a mention here is Notte (notte.cc), a cloud Chromium platform purpose-built for AI agents. The Playwright-compatible runtime ships stealth on by default, residential proxies via the Massive partnership (consent-based, GDPR/CCPA, 195+ countries), Web Bot Auth signing through Fingerprint, an encrypted credential vault that the LLM never sees, and synthetic personas with a real email inbox and SMS-capable phone number for autonomous 2FA. Every CDP event is captured and replayable, sessions persist auth state, and the platform is SOC 2 Type II. Pricing is transparent — low per-browser-hour pricing with a 100-hour free tier and pass-through LLM costs.

Verdict

These products serve different buyers. For an engineering team building a product, Anchor Browser is the substrate — a cloud Chromium runtime with the identity stack already integrated. For an ops or business-process team replacing portal-driven manual work, Skyvern is the platform — a Vision-LLM agent with workflows, integrations, and OSS self-host. The question isn't "which is better"; it's "who's running the work."