GPTinf
GPTinf is an AI writing refinement workspace focused on humanizing, editing, and checking AI-assisted drafts. It combines a text humanizer with freeze keywords, selective rephrasing, AI detection, plagiarism checking, grammar checking, paraphrasing, readability review, and essay-writing tools. The platform is positioned for students, freelance writers, marketers, and content professionals who want to revise drafts while preserving meaning and reviewing originality signals in one place.
Made by GPTinf · Listing checked May 27, 2026
What it does
Use it to
- Rewrite AI-assisted drafts so they sound more natural and less templated
- Preserve important terminology with freeze keywords while revising surrounding text
- Selectively rephrase individual sentences instead of rewriting a full document
- Review text with a built-in AI detector before publishing or submitting
- Check plagiarism and source overlap from the same writing workspace
- Improve grammar, readability, and clarity in academic or professional drafts
- Refine marketing copy, blog posts, essays, and client deliverables
- Compare multiple rewrite modes for different levels of formality and concision
Pricing
Checked May 27, 2026- Plans currently start at $4.99/month
- GPTinf offers a limited free trial and paid monthly plans. Public pricing currently lists Lite at $4.99/month, Pro at $12.49/month, and Unlimited at $29.99/month. The free trial currently allows limited humanization before and after signup, while paid plans unlock larger monthly word limits and features such as plagiarism checks, grammar checks, freeze keywords, AI detector checks, rewrite modes, selective rephrase, and re-humanizing. Pricing and limits may change, so users should confirm the latest details on GPTinf's official pricing page before subscribing.
Prices come from GPTinf's public pricing page and change, so confirm on their site before you subscribe.
Good and watch out
What's good
- Combines humanization, AI detection, plagiarism checking, grammar checking, and paraphrasing in one workspace
- Freeze keywords help preserve important terms while rewriting surrounding text
- Selective rephrase supports targeted sentence-level edits
- Public detector page is available without requiring signup
- Current paid pricing starts lower than the older pricing shown in some third-party listings
Watch out for
- Free humanization is limited, so regular users will likely need a paid plan
- Some strong detector-bypass claims should be treated as vendor claims rather than guarantees
- No public API or dedicated mobile app was confirmed
- Some features, including plagiarism workflows, may require registration or a paid plan
Tool facts
Free Version
Yes (limited free trial)
Pricing
Plans currently start at $4.99/month
API Available
No public API confirmed
Mobile App
No dedicated mobile app confirmed
Release date
December 31, 2022
Platforms
Languages
Tags
For developers
API Availability
- A public developer API was not confirmed from GPTinf's public pages.
- GPTinf is currently presented as a web-based writing workspace rather than a developer API product.
- Teams that need programmatic access should contact GPTinf directly for current integration options.
API
- No public API was confirmed from the public pages reviewed.
- GPTinf is primarily positioned as a browser-based editor and writing workflow.
- For integration or enterprise access, users should contact GPTinf directly.
- API availability: No
Sources
Community resources
GPTinf Official Website
The official GPTinf website provides access to the editor and current product information.
GPTinf Pricing
The pricing page lists the current free trial and paid subscription tiers.
GPTinf AI Detector
The detector page lets users review AI-detection signals for text.
GPTinf Plagiarism Checker
The plagiarism checker page describes similarity and source-checking workflows.
GPTinf Grammar Checker
The grammar checker page covers grammar and writing-quality review.
