NextBlock Cortex AI is the smart content tool built for modern web pages. It understands page blocks, section layouts, and editorial rules so you can create better content faster.
Model choice
Pick the right model
Plug in your own OpenRouter key and pick one model for the whole site: free models with automatic fallback, or a paid model you choose.
BYOK control
Use your own keys
Keep provider keys safe on your server while giving editors a simple AI writing screen.
Typed output
Generate valid blocks
Typed schemas ensure AI content drops straight into your pages as clean, working blocks.
Why Cortex AI Belongs Inside the Editor
Generic chat tools can draft text, but they do not know the difference between a hero banner, a card grid, and a blog post. Cortex AI lives right inside your editing screen. It creates content that fits the blocks on your live site.
This makes AI truly useful for everyday work. You can draft a new landing section, polish a summary, expand product copy, or translate a full article with ease.
Editorial workflow
Faster first drafts
Start with a prompt and get a section, article draft, or product story that matches your tone.
Cleaner revisions
Ask for shorter, clearer, or translated text without leaving your edit screen.
Model Choice and Cost Control
Cortex AI runs on OpenRouter, and you pick one model for the whole site in the Cortex AI settings. Free models are the default, with automatic fallback when one is busy. They still need an OpenRouter key, but a free OpenRouter account is enough. To pick a paid model, save your key in the CMS. You manage that key on the server, so your writers can focus on good content.
- Start on free models at no model cost.
- Switch the site to a stronger paid model whenever you need more quality.
- Keep your OpenRouter key encrypted in the CMS settings.
- Control costs without changing how pages display to visitors.
Block-Aware Generation
Cortex AI does more than write plain text. It creates structured content that maps directly to NextBlock components. You get ready-to-use section copy, headings, buttons, and translated blocks. You spend less time fixing messy copy from external tools.
Because the generated content respects your block rules, everything looks consistent and runs fast on the web.
Safer Team Workflows
AI works best when humans stay in control. With Cortex AI, editors review every draft before publishing. Developers manage the model keys, and the CMS keeps all versions in your normal history log.
A Practical Launch Flow
- Draft an article, landing section, or product story from a clear prompt.
- Refine the text to match your audience and brand tone.
- Create a translated version or shorter summary for social cards and search tags.
- Review the content in the editor, hit publish, and track your revisions over time.
Two Ways to Use Cortex AI
Cortex AI works in two places. AI inside the editor drafts, rewrites, and translates blocks with your own OpenRouter key, free models included. The MCP server lets your own AI app, such as Claude Code or Cursor, build pages on the plan you already pay for. Connect your AI app over MCP.
The NextBlock CMS is free and open source under the AGPL. Both surfaces are part of Cortex AI, which starts with a 30-day free trial and needs no credit card.
Cortex AI turns your CMS into a faster creative workshop. It does not replace human taste, but it helps you turn great ideas into finished pages in record time.