Perplexity Debuts AI-Integrated Web Browser, Comet

Perplexity launched its AI-powered web browser, Comet, on Wednesday, marking a significant move in the startup's challenge to Google Search as the primary online information gateway.

Initially, Comet will be available to subscribers of Perplexity's $200-per-month Max plan and a select group from a waitlist.

Comet's standout feature is Perplexity's AI search engine, which comes pre-installed as the default, highlighting the company's core service—AI-generated summaries of search results.

Users can also access Comet Assistant, a new browser-based AI agent designed to automate routine tasks like summarizing emails and calendar events, managing tabs, and navigating web pages. The assistant is accessible via a sidecar on any webpage, allowing it to understand the page's content and answer related questions.

While Perplexity has introduced several products recently, Comet stands out as particularly significant. CEO Aravind Srinivas has heavily promoted its launch, likely viewing it as crucial in the company's competition with Google.

With Comet, Perplexity aims to connect directly with users, bypassing the need for Google Chrome, the current dominant browser. Although AI browsers represent new territory, Google appears to agree on this direction, having integrated multiple AI features into Chrome and launching an AI search product similar to Perplexity's.

In March, Srinivas stated that Comet's goal is to create an "operating system" where Perplexity's AI assists users across apps and websites. He noted in June that becoming a user's default browser could lead to "infinite retention," potentially driving more queries to Perplexity.

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However, Comet enters a competitive field. While Chrome and Safari dominate, The Browser Company launched its own AI browser, Dia, in June, offering similar features. OpenAI is also reportedly considering its own browser and has recruited key members from the original Chrome team.

Comet could gain an early advantage if a substantial portion of Perplexity's user base adopts it. Srinivas recently reported 780 million queries in May 2025, with search product growth exceeding 20% month-over-month.

Challenging Google Search is a formidable task, but launching its own browser is a strategic move for Perplexity. Yet, convincing users to switch browsers may prove even more difficult than moving them away from Google Search.

Hands-On with Comet

Comet Assistant is the browser's most distinctive feature. Testing showed it is helpful for simple tasks but struggles with complex requests. Using it effectively also requires granting Perplexity extensive access permissions.

The most useful feature I found was loading Comet Assistant in the sidecar while browsing. The AI agent automatically sees the webpage content, allowing me to ask questions without opening new windows or copying text—it's always there with the right context.

The assistant successfully answered questions about social media posts, YouTube videos, and even text I wrote in a Google Doc. This could significantly streamline the workflow for people who frequently share content with AI models.

Next, I attempted to have Comet Assistant review my Google Calendar, but this required granting Perplexity broad access to my Google Account, which was extensive.

Granting permissions to view my screen, send emails, access contacts, and edit my Calendar was unsettling. However, such access seems necessary for AI agents to function effectively.

Despite this, Comet Assistant performed reasonably well with my Calendar, notifying me of upcoming events and providing travel advice, including departure times and public transit options.

It also summarized important emails from notable senders like startups and tech companies. While AI agents often struggle to prioritize email content, Comet Assistant handled this task competently.

However, it faltered with more complex tasks. For instance, when asked to find a long-term parking spot at San Francisco airport with good reviews under $15 per day, it suggested several options.

When I requested to book one, the agent navigated the parking website, entered dates and my information, and asked me to review and complete checkout.

Unfortunately, Comet Assistant hallucinated, entering incorrect dates and claiming my preferred dates were booked, still urging me to checkout. After I insisted the dates were fixed, it attempted to find another location but encountered the same issue.

Such errors are not unique; my experiences with OpenAI's Operator and Perplexity's previous shopping agent were similar. Hallucinations remain a major barrier to these tools becoming truly reliable for complex tasks.

Nevertheless, Comet introduces new capabilities that could give Perplexity an edge in the evolving browser competition.