Enhancements
Complexity is a browser extension that adds model selection and other controls to Perplexity.ai.
About Enhancements
Complexity is a browser extension that adds model selection and other controls to Perplexity.ai. It lets users change models and focus modes without opening the settings page, including within an existing thread, and adds interface features such as a table of contents for long threads, a sticky toolbar for message actions, and a custom Markdown block for code.
Key features
- Change Perplexity models and focus modes on the fly, even within a thread
- Interact with Spaces from the Perplexity homepage without navigating away
- Thread table of contents for navigating long conversations
- Sticky toolbar for message actions: rewrite, edit, copy with or without links
- Custom Markdown block with syntax highlighting and no line wrap by default
- Custom theme with accent colors, fonts and an ADHD-friendly color scheme
Best for: People who use Perplexity.ai regularly and want faster control over models, threads and appearance without leaving the page.
Good for
- Listed for installation on both Chrome and Firefox through their extension stores
- Offers customization of accent colors, fonts and a built-in ADHD-friendly color scheme
- Developer gathers feature suggestions and bug reports through a linked Discord community
Watch out for
- The Prompt Library is described as in development rather than available
- Thread and message export is labeled experimental and is limited to markdown output
- The homepage provides no pricing information, and no privacy or data-handling details are stated
Enhancements at a glance
- Website
- cplx.app
- Category
- Software & Utilities › Browser Extensions
- Type
- Website
- Pricing
- Not confirmed. Check the site
- Platforms
- Web
- Open source
- Not stated
- Language
- English
- Last checked
- Oct 6, 2026 · Online when checked
- Listed
- Oct 5, 2026
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Enhancements FAQ
Which browsers can I install Complexity on?
It is listed on the Chrome Web Store and on Mozilla Add-ons.
How do I suggest features or report issues?
Through the Discord community linked on the homepage.
Can I save a thread for later?
Threads or individual messages can be exported in markdown format, with or without links; this feature is marked experimental.
Is something wrong or out of date?
Tell us and an editor will check it.
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