OpenAI’s new browser feels familiar…
Watch on YouTube ↗ Summary based on the YouTube transcript and episode description.
Fireship reviews ChatGPT Atlas, OpenAI’s Chromium-based AI browser, finding it a near-copy of Perplexity Comet with real prompt-injection security risks.
- ChatGPT Atlas is a Chromium fork with ChatGPT embedded, not a new engine — contradicting OpenAI’s claim of reinventing the browser.
- Atlas uses browsing history as context for queries and includes an agent mode that executes tasks like placing DoorDash orders autonomously.
- Brave researchers found Perplexity Comet vulnerable to prompt injection via malicious instructions embedded in images triggered on screenshot.
- Fellow, another agentic browser, was also compromised by prompt injection simply by visiting a site with embedded malicious instructions.
- Brave’s conclusion: indirect prompt injection is a systemic risk across all AI-powered browsers, not an isolated bug.
- Ladybird browser is rebuilding engine and browser from scratch with no Chromium code, and just crossed 90% on web platform tasks, qualifying for iOS alternative engine status.
- Atlas is Mac-only at launch; agent mode exists but is described as slow and unreliable in early use.
2025-10-22 · Watch on YouTube
