Hark Handoff
An agent that clicks, types, and navigates real websites in its own virtual computer, no API required, to actually complete tasks like booking or ordering for you.
Hark Handoff — the verdict: Automating multi-step tasks on websites that have no developer API to hook into Hark Handoff is betting that the ceiling on browser agents has been the wrong training target: predicting UI actions instead of text tokens is a real architectural difference, not just marketing, and it shows up in the benchmark numbers. Pricing: Technical preview (waitlist) — usage-based, roughly $0.18/1M input tokens and $2.37/1M output tokens. Last reviewed: August 2026.
Best For
Automating multi-step tasks on websites that have no developer API to hook into
Standout Feature
Predicts the next UI click or keystroke rather than the next word, which is why it leads the OM2W web-navigation benchmark
Verdict
A genuinely different architecture for browser agents, still in technical preview with real open questions about enterprise security.
Alternatives
Overview
Hark Handoff is a computer-use agent that navigates the open web the way a person would, clicking, typing, and reading screens inside a dedicated virtual computer spun up for each task, rather than calling developer APIs behind the scenes. That lets it act on sites with no API at all: booking a flight, ordering food, messaging a candidate on LinkedIn, or filling out a form on a site it has never seen. Rather than predicting the next word in a sentence, its underlying model predicts the next UI action, a click or keystroke, which is the architectural bet behind its benchmark-leading score on the OM2W web-navigation benchmark.
It connects to a user's existing accounts so it can act with their saved addresses and payment methods already in place. Founded by Brett Adcock, previously behind Figure AI and Archer Aviation, and backed by a $700M Series A at a $6B valuation, Hark is currently in technical preview with a waitlist rather than a public launch, and token costs are already priced well below comparable frontier computer-use agents. Hark Handoff fits anyone who wants an agent to actually complete a multi-step task on a website that has no automation-friendly API, not just answer a question about it.
Our Take
Hark Handoff is betting that the ceiling on browser agents has been the wrong training target: predicting UI actions instead of text tokens is a real architectural difference, not just marketing, and it shows up in the benchmark numbers. The token pricing undercutting comparable agents by an order of magnitude matters once you're running this at any real volume. The honest caveats are that it's still a technical preview with no firm public release date, and letting an agent operate a virtual computer with access to your saved accounts raises security and privacy questions that aren't fully answered yet. Worth getting on the waitlist for if browser automation without an API is a real bottleneck for you; not yet something to build a production workflow around.
Key Features
- Dedicated virtual computer per task (browser, filesystem, terminal)
- Navigates sites with no API using UI-action prediction
- Connects to existing accounts, addresses, and payment methods
- Leading score on the OM2W web-navigation benchmark
- • Genuinely novel architecture, not just another API wrapper
- • Token costs well below comparable frontier computer-use agents
- • Strong founding team and funding behind continued development
- • Technical preview only, no firm public release date
- • Enterprise security and data-access questions still unresolved
- • Model only post-trained so far, quality could shift meaningfully with pre-training
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