Lumen 1.5.4 Beta

Lumen 1.5.4 introduces Lumen Assistant, an AI assistant in a panel beside the page. It's a beta, and it's off until you turn it on.

Lumen Assistant (beta)

• Ask about the page you're reading: summaries, key points, explanations of what you selected. The open page is attached automatically, and you can remove it
• Bring your own key: Anthropic, OpenAI, OpenRouter, DeepSeek, or any OpenAI-compatible server such as Ollama or LM Studio. Keys are stored in the macOS Keychain
• Pick the model from your provider's own list, in Settings › AI or for a single chat from the panel
• Attach images when the model can read them
• Open it with ⇧⌘A or the sparkles button. Turn it on in Settings › AI or during setup
• Tested against prompt injection: text hidden in web pages is treated as page content, never as instructions, and in our tests the assistant recognised injection attempts and ignored them. It can't click, type or open pages by itself; links it suggests open only when you click them. No defence against prompt injection is perfect, so stay careful with what you ask it to do on untrusted pages
• Nothing is sent until you ask something, and then only to the provider you chose

Fixes

• YouTube ads are skipped in videos embedded on other sites, like Reddit, too

Install
Download Lumen-1.5.4.dmg, open it and drag Lumen to Applications, or update from inside Lumen with Lumen › Check for Updates…. This build is not notarized, so macOS may say Lumen "is damaged and can't be opened". The download is fine: run xattr -dr com.apple.quarantine /Applications/Lumen.app once in Terminal, then open Lumen normally. Updating from inside Lumen doesn't need this.

Requires macOS 14 or later. Runs natively on Apple silicon and Intel. This is a beta: expect some bugs.