Tool Icon

GPTinf

By GPTinf Released in 2023
AI Academic Paper WriterAI CopywritingAI Grammar CheckerAI ParaphraserAI RewriterContent GeneratorsNatural Language Processing
Visit Tool Read Our Review

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

Platforms

Web
Overview Uses Job Uses Pros & Cons API For Developers FAQs Alternatives

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.

Use Cases

  • To rewrite AI-assisted drafts so they sound more natural and less templated
  • To preserve important terminology with freeze keywords while revising surrounding text
  • To selectively rephrase individual sentences instead of rewriting a full document
  • To review text with a built-in AI detector before publishing or submitting
  • To check plagiarism and source overlap from the same writing workspace
  • To improve grammar, readability, and clarity in academic or professional drafts
  • To refine marketing copy, blog posts, essays, and client deliverables
  • To compare multiple rewrite modes for different levels of formality and concision

Job Uses

Student

Hire

Uses GPTinf to refine AI-assisted drafts, preserve key terminology, and review originality signals before submitting work.

Freelance Writer

Hire

Uses GPTinf to polish client drafts, selectively rephrase weak sentences, and check plagiarism from one workspace.

Content Marketer

Hire

Uses the humanizer, grammar checker, and rewrite modes to make AI-assisted campaign copy sound more natural.

SEO Writer

Hire

Uses GPTinf to revise long-form drafts while keeping meaning, keywords, and content structure intact.

Editor

Hire

Uses selective rephrase and readability tools to improve drafts without rewriting the entire document.

Note: This tool is designed to augment human capabilities, not fully replace jobs. The extent of its impact may vary based on specific job requirements and industry standards.

Pros & Cons

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
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

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.

Sources:

FAQs

What is GPTinf?

GPTinf is a writing refinement tool that helps users humanize, edit, and check AI-assisted text using rewriting, detection, plagiarism, grammar, paraphrasing, and readability tools.

What are freeze keywords in GPTinf?

Freeze keywords let users protect specific terms, names, or phrases so they are not changed during rewriting.

Does GPTinf include an AI detector?

Yes. GPTinf offers an AI detector workflow. Detector scores should be treated as guidance rather than a guarantee.

Does GPTinf include plagiarism checking?

Yes. GPTinf lists a plagiarism checker among its writing tools, with paid plans including broader plagiarism-checking access.

How much does GPTinf cost?

Current public pricing lists paid plans starting at $4.99/month, with higher tiers for larger usage needs. Users should confirm the latest pricing on GPTinf's official pricing page.

Is there a GPTinf API?

A public API was not confirmed from the public GPTinf pages reviewed.

All Our Articles About GPTinf

How To Make ChatGPT Completely Undetectable (Scramble AI Detection)

Updated: February 16, 2025

Undetectable AI vs. GPTinf: Can They Hide AI Text?

Updated: December 6, 2024
View All Articles

Licensing Information

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.

Supported Languages

English

Tagged With

AINLPPlagiarism DetectionText ClassificationText Generation

Related Tools

Tool Icon

TwainGPT
Tool Icon

HumanizeAI.pro
Tool Icon

Super Humanize AI

Recent News Articles

GPTInf Review - Can It Bypass Leading AI Detectors?

Originality.ai•Oct 15, 2024

Community Discussion

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.

*Last modified: May 27, 2026

**Affiliate Disclaimer: Some links on this page may be affiliate links. If you make a purchase through these links, we may earn a commission at no additional cost to you. This helps support our website and allows us to continue providing high-quality content 💛

***At Gold Penguin, we strive to provide accurate, up-to-date, and unbiased information about AI tools, while acknowledging that user reviews, tool features, and data security considerations may vary. We encourage users to verify information, consult experts, and review privacy policies before making decisions or implementing AI tools.