TextCortex

★★★★☆4.0 / 5 editorial Freemium Free plan with daily creations; paid tiers add more personas and knowledge bases — check the official site for current pricing.

Customizable AI writing assistant that learns your knowledge and voice

✓ Editor-verified listing — details reviewed by Grab AI Tool editors; pricing re-checked regularly.

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#ai assistant#copywriting#brand voice#browser extension#content creation

What is TextCortex?

TextCortex is an AI writing assistant built around customization: you can create personas that write in a defined voice and knowledge bases from your own documents, so generated text reflects your material instead of generic training data. It works in a web app and through a browser sidebar that floats over thousands of websites, ready to draft or rewrite anywhere.

Templates cover emails, product descriptions, ads, and long-form articles, and its chat assistant, Zeno, can summarize pages and answer questions about uploaded files. Teams use shared personas to keep output consistent across writers. The product is capable but busy; with personas, templates, and chat competing for attention, new users may need time to find the workflow that suits them.

Key Features

Custom personas that write in your voice
Knowledge bases built from your documents
Browser sidebar working on thousands of sites
Templates for emails, ads, and articles
Zeno chat for summarizing and file questions

Pros

Personas keep brand voice consistent
Knowledge bases reduce generic output
Sidebar is genuinely convenient

Cons

Interface tries to do too much at once
Output quality varies by persona setup
Pricing tiers can be confusing

Pricing

Model: Freemium
Free plan with daily creations; paid tiers add more personas and knowledge bases — check the official site for current pricing.

Adding Up Your AI Bill?

If you pay for TextCortex alongside other AI subscriptions, the monthly total adds up quietly. Tick every tool you pay for in our free AI Tool Cost Calculator to see your real monthly and yearly bill — and spot overlaps you can cut. Still choosing? Start with our guide on how to choose the right AI tool.