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The New Browser Stack: Who’s Raised What?

Jason Grad
Co-founder
December 2, 2025
Table of Contents

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The New Browser Stack: Who’s Raised What?

Jason Grad
Co-founder
December 2, 2025

In 2024 and 2025, the browser underwent a quiet yet significant transformation. Browsers have become an execution environment for AI agents, a programmable surface for automation, and the control layer where enterprise data meets the open web.

This shift has led to one of the fastest-growing categories in modern infrastructure investing. Venture capital firms, traditional enterprise software investors, AI-focused funds, and innovators across Silicon Valley have poured capital into companies that support or reinvent the browser. 

Browser reinvention encompasses agentic browsers, browser infrastructure, enterprise browsers, and headless cloud browser systems that enable AI agents to operate online in the same way humans do.

Instead of treating a browser as a tool for individuals, this new wave treats the browser as a foundational part of the AI stack:

  • An environment for computation, automation, and action
  • The new runtime for intelligent software

Top Browser and Browser Infrastructure Companies by Funding (2025)

The list below is a comprehensive breakdown of the top-funded companies in this emerging category. It covers enterprise browsers, browser automation platforms, headless browser infrastructure, agentic browser companies, and developer tools that support automation at scale.

<table class="GeneratedTable">
<thead>
<tr>
<th>Rank</th>
<th>Company</th>
<th>Stage</th>
<th>Approx. Total Raised</th>
</tr>
</thead>
<tbody>
<tr><td>1</td><td>Browserbase</td><td>Series B</td><td>~67.5M total</td></tr>
<tr><td>2</td><td>TinyFish</td><td>Series A</td><td>47M total</td></tr>
<tr><td>3</td><td>Airtop</td><td>Seed</td><td>38.8M total</td></tr>
<tr><td>4</td><td>Kernel</td><td>Series A</td><td>22M total</td></tr>
<tr><td>5</td><td>Browser Use</td><td>Seed</td><td>17M total</td></tr>
<tr><td>6</td><td>Anchor</td><td>Seed</td><td>6M total</td></tr>
<tr><td>7</td><td>Strawberry</td><td>Seed</td><td>6M total</td></tr>
</tbody>
</table>

This ranking shows a broad diversity of players. Some focus on enterprise security, others on automation, and others on agentic browsing for end users or developers.

Despite their differences, they all represent the same fundamental shift. The browser is becoming programmable, scalable, and increasingly designed for automation rather than human interaction.

1. Browserbase

Headless browser infrastructure for AI agents

Browserbase has become one of the fastest-growing browser infrastructure platforms. It provides high-performance headless browsers that AI agents can operate through APIs. Browserbase offers features such as persistent sessions, full page rendering, anti-bot handling, and stable execution environments.

This approach has made Browserbase a favorite among AI developers, scraping companies, agent builders, and workflow automation teams.

Funding:

Raised $40 million in Series B led by Notable Capital in their most recent round in June 2025.

Why Browserbase matters

Browserbase is the purest example of browser as infrastructure. It does not attempt to build a consumer browser or enterprise security system. It builds the backend layer that lets AI systems browse the internet at scale. Developers treat Browserbase as a core part of their agentic stack.

2. TinyFish

Enterprise-grade web agents for complex workflows

TinyFish is a leader in the emerging category of enterprise-grade web agents. These agents do everything from data extraction to multi-step workflow automation. Instead of relying on brittle scripts or simple headless browsers, TinyFish provides policy-aware, long-running browser agents that can handle complex business operations.

This makes TinyFish particularly appealing to Fortune 500 companies that want to modernize processes without rebuilding entire systems.

Funding:

Raised a $47 million Series A led by ICONIQ Capital.

Why TinyFish matters

TinyFish targets a high-value niche. These are not simple automations; they are deep enterprise workflows that require accuracy, auditability, and reliability. The 47 million dollar Series A round shows that high-level automation inside the browser is becoming indispensable for enterprise operations.

3. Airtop

Cloud browsers for no-code and agentic automation

Airtop (formerly Switchboard) provides cloud-hosted browsers that let teams automate web tasks using simple natural-language instructions. A great resource for users when describing what they need instead of clicking through dashboards. Airtop handles the login, navigation, data extraction, and multi-step actions automatically.

Persistent sessions, built-in integrations, and ready-made templates make it a practical, user-friendly way for operations, research, healthcare, and marketing teams to bring agentic automation into their workflow and reclaim hours of manual effort.

Funding:

Airtop has raised a total of $38.8 million.

Why Airtop matters

Airtop represents the practical end of this ecosystem. Instead of focusing purely on developers, Airtop serves real-world operational teams who need simple interfaces and reliable automation capabilities.

4. Kernel

Cloud browsers engineered for speed and agent workloads

Kernel is a cloud browser service built for developers and AI teams that want speed, reliability, and unbeatable performance. Kernel markets itself as a very fast browser-as-a-service product. It is popular among teams that need fast automations, reliable rendering, and stable session persistence.

Funding:

Raised $22 million in a Seed + Series A round led by Accel (with participation from YC and others).

Why Kernel matters

Kernel demonstrates how much demand exists for speed-focused browser infrastructure. As agents scale, slow rendering times and unstable sessions become costly. Kernel addresses that with optimized cloud browsers designed specifically for AI workloads.

5. Browser Use

The fastest-growing open source agentic browser framework

Browser Use is an open-source framework that has exploded in popularity. It allows AI agents to control browsers in a human-like manner with actions such as logging in, navigating, clicking, and extracting data. It also offers a hosted platform for teams that want managed infrastructure.

Funding:

Raised a $17 million seed led by Felicis Ventures.

Why Browser Use matters

Browser Use is proof that the agentic ecosystem has a strong demand for open tools. With tens of thousands of developers using the framework, Browser Use is becoming a standard building block in many agent systems.

6. Anchor Browser

Agent automation for public and private web systems

Anchor Browser provides browser automation tools designed for AI agents that work across both public websites and internal enterprise systems. This includes login flows, dashboards, SaaS platforms, and more.

Funding:

Secured $6 million in seed financing, a round backed by investors focused on the emerging agent-automation ecosystem.

Why Anchor Browser matters

Anchor Browser focuses on bridging the gap between external browsing and internal corporate systems. This is a major advantage for companies that want to run agents across every part of their digital environment.

7. Strawberry

A consumer-oriented AI browser with built-in companions

Strawberry takes a completely different approach. It creates a browser designed for end users who want AI-powered companions handling tasks on their behalf. This includes summarizing pages, comparing products, and simplifying complex browsing steps.

Funding:

Raised $6 million in seed funding, a round co-led by General Catalyst and EQT Ventures.

Why Strawberry matters

While other companies focus on infrastructure, Strawberry focuses on the consumer experience. It is an early signal that AI browsers may become mainstream.

Industry Patterns and Takeaways

The rise of browser infrastructure signals a fundamental shift in how the internet is used. The browser is no longer a passive surface designed only for human navigation. It is becoming an active environment where AI agents think, decide, and execute tasks at scale.

This evolution is reshaping how organizations operate online and redefining where real automation happens. The companies building this layer are not simply improving the browsing experience. They are creating the execution environment for intelligent systems and laying the groundwork for a new generation of AI-driven workflows.

Across the entire browser infrastructure space, three major patterns have become clear:

1. The browser is becoming the new runtime for AI systems

Browsers now function as the operational surface where AI agents perform actions, complete workflows, and interact with the web. This elevates the browser from a viewing window to a core execution layer in the modern AI stack.

2. Enterprises want reliable automation built inside the browser

Organizations are investing heavily in browser-based infrastructure that allows agents to work inside complex SaaS platforms, internal dashboards, private systems, and secure environments. The browser is becoming the most consistent and universal interface for enterprise automation.

3. Investors see massive potential in agentic browsing

Leading firms, including Accel, Insight Partners, ICONIQ, Felicis, General Catalyst, and EQT, are aggressively funding companies in this space. Their investment signals a strong belief that browser infrastructure will be a foundational layer for the next decade of AI innovation.

As this ecosystem grows, the browser is transforming into the control layer where intelligent automation truly comes to life.

About the author
Jason Grad
Co-founder

I am the co-founder & CEO of Massive. In addition to working on startups, I am a musician, athlete, mentor, event host, and volunteer.

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