Anthropic recently launched Claude in Chrome - a native browser extension that puts Claude's AI sidebar directly into every webpage you visit. It's genuinely useful: ask Claude to summarize the page you're reading, explain a term, or draft a reply, all without switching tabs.
The catch: it's only available on Claude Pro, Team, or Enterprise plans. The cheapest option is Claude Pro at around $20/month.
If you're already paying for Claude Pro, the built-in extension is a no-brainer. But if you're not - or if you just want Claude in your browser without committing to a $20/month subscription - there's a cheaper path.
Option 1: Bring your own Anthropic API key (free)
Anthropic offers direct API access to Claude models. If you create an API account and add a small amount of credit, you can use Claude at pay-per-use rates rather than a flat subscription.
For light usage (a few dozen page summaries and questions per day), the cost is typically under $1-2/month. Heavy users might reach $5-8/month. Either way, significantly less than $20.
The downside: you need to set up an API account, add a payment method, and manage your own API key. It's not complicated, but it's a few extra steps.
How it works with Nexio AI:
- Install Nexio AI from the Chrome Web Store (free)
- Get your API key from console.anthropic.com
- Paste it into the Nexio AI settings panel
- Done - Claude sidebar is active on every page you visit
Tip: Set a monthly spend limit in your Anthropic console so you never get a surprise bill. $5 is more than enough for most users.
Option 2: Nexio Pro - CHF 5.99/month, no API setup
If you don't want to deal with API keys, Nexio Pro gives you Claude in your browser for CHF 5.99/month. You get up to 1,000 AI requests per month - enough for daily use across all your Nexio extensions - without ever touching an API console.
One key difference from Claude Pro: Nexio Pro uses Claude Haiku, which is fast and cost-efficient. Claude Pro uses the full Claude Sonnet or Opus models. For most browser tasks (summarizing, explaining, writing short drafts), Haiku is more than capable. For complex multi-step reasoning, Claude Pro's heavier models have an edge.
How do they compare?
| Feature | Claude Pro ($20/mo) | Nexio Free (own key) | Nexio Pro (CHF 5.99) |
|---|---|---|---|
| Browser sidebar | Yes | Yes | Yes |
| Works on any webpage | Yes | Yes | Yes |
| No API key needed | Yes | No | Yes |
| Model | Claude Sonnet/Opus | Any Claude model | Claude Haiku |
| Works on Gmail, YouTube, LinkedIn | Partial | Yes (specialized) | Yes (specialized) |
| Monthly cost | ~$20 | $1-5 usage | CHF 5.99 |
What Nexio AI actually does
Nexio AI adds a collapsible sidebar to every page you visit (toggle with Alt+A). From the sidebar you can:
- Summarize the page - get the key points in 3-5 bullet points
- Select any text - ask Claude to explain, rewrite, or expand it
- Chat with page context - Claude can see the page content, so your questions are grounded in what you're reading
- Use specialized tools - Gmail AI for email drafts, YouTube AI for video summaries, LinkedIn AI for post writing, PDF AI for document Q&A
The bottom line
If you want Claude in your browser and you're already paying for Claude Pro, just use Anthropic's official extension. If you're not - and especially if you're already paying for an Anthropic API account - a third-party extension like Nexio AI gets you 90% of the experience for a fraction of the cost.
The free tier (bring-your-own-key) is genuinely free to install and use. The Pro tier at CHF 5.99/month removes the API key requirement entirely.
Try Nexio AI free
Install in 30 seconds. Bring your own API key or go Pro for CHF 5.99/month.
Add to Chrome - Free