# Link Shield vs Undetectable AI

Link Shield records 497 monthly visits with +4,041.7% month-over-month growth and Free Trial, Paid pricing. Undetectable AI records 3,113,403 monthly visits with +17.5% growth and Freemium pricing.

| Metric | [Link Shield](https://openaitools.app/tool/linkshieldapi-com) | [Undetectable AI](https://openaitools.app/tool/undetectable-ai) |
| :--- | :--- | :--- |
| Website URL | https://linkshieldapi.com | https://undetectable.ai |
| Categories | AI API, AI Detector, AI Developer Tools | AI Detector, AI Content Detector, AI Checker, Humanizer AI |
| Pricing Model | Free Trial, Paid | Freemium |
| Monthly Visits | 497 | 3,113,403 |
| MoM Growth Rate | +4,041.7% | +17.5% |
| Primary Market | Indonesia | United States |
| Direct Visits | 198 | 2,336,720 |
| Review Score | 4 | 3.8 |
| Saved Count | 0 | 30 |
| Supported Platforms | Website | Website |

## Link Shield

Link Shield is built for products where users can submit or share links - the exact surface where phishing, malware, scam and spam traffic tends to enter. Rather than relying on a static blacklist lookup, a scan inspects the URL structure for suspicious patterns, unwraps short links and follows redirect chains to surface the eventual destination, and returns a numerical risk score from 0 to 100 alongside human-readable reasons.

That scoring model lets a team decide its own policy. A low score can be allowed silently, a mid-range score can trigger a warning or a review queue, and a high score can be blocked outright. Link Shield also classifies links across categories including phishing, malware, scam, adult, dating, gambling, crypto and spam, which is useful when the requirement is less about outright blocking and more about controlling what kind of content flows through a platform.

Integration is deliberately lightweight: simple REST endpoints, clear documentation and bulk URL scoring so large batches can be checked in a single request with per-link results returned quickly. Pricing is usage-based with a free trial to start, and the published reference from a URL shortener noting that it protects millions of links daily demonstrates the bulk-oriented deployment pattern the API is designed for.

**Pricing & Plans:** Link Shield uses usage-based pricing with a free trial available to get started, so cost scales with the volume of URL scans you run rather than a flat seat fee. Exact per-call tiers and any volume discounts are published on the Link Shield site, and teams with high scan volumes should confirm current rates there before sizing a deployment.

- **0-100 risk score with reasons:** Every scan returns a numeric score plus explanatory reasons, so you can act on a link with confidence rather than trusting an opaque verdict.
- **Redirect-aware detection:** Short links and redirect chains are unwrapped and followed, revealing hidden final destinations before they reach your users.
- **Multi-category classification:** Links are classified across phishing, malware, scam, adult, dating, gambling, crypto and spam, supporting nuanced content policies.
- **Bulk URL scoring:** Send batches of URLs in a single request and receive per-link risk scores, which suits high-volume pipelines and link shorteners.
- **REST API integration:** Simple endpoints and clear documentation make it straightforward to add scanning into an existing stack without a heavy security platform.

**Strengths:** Transparent scoring: a 0-100 number plus the reasons behind it; Follows redirects and unwraps short links to catch hidden destinations; Bulk batch scanning supports high-volume link pipelines; Usage-based pricing means cost tracks actual scan volume

**Limitations:** This is a developer-facing API, so it requires engineering work to integrate; Effectiveness still depends on tuning score thresholds to your own risk tolerance; Category coverage reflects the taxonomy the vendor publishes, which may not match every niche policy need

[Profile (Markdown)](https://openaitools.app/tool/linkshieldapi-com.md)

## Undetectable AI

Undetectable AI focuses on a single practical problem: content that sounds machine-made can be penalized, flagged or distrusted. The platform's detector highlights which sentences a scanner would most likely mark as AI-generated, showing percentages before the humanizer even runs. Once flagged, the humanizer rewrites those segments with varied sentence structure, richer vocabulary and adjusted tone, aiming to keep the original meaning intact while producing writing that reads naturally.

Beyond the core text tools, the product range has expanded into media forensics. There are detectors for AI-generated images, voice, video and deepfakes, plus specialty utilities such as a fake PDF detector, a receipt checker and other document-verification tools. A Chrome extension brings detection and rewriting into Gmail, Google Docs and any other page you are typing on, and an API is offered for teams that want the humanizer embedded in their own workflows.

The platform reports more than 24 million users and supports 50+ languages, though English yields the most accurate results. Business Solutions add stricter data-retention controls, white-labeling and non-expiring credit packs for higher-volume clients. A free tier is available with limited words, and the vendor advertises a money-back guarantee when humanized output is still flagged.

**Pricing & Plans:** Freemium. A free trial covers a limited number of words (currently 250). Paid monthly plans start around $9.99 for 10K words and scale to roughly $42.50 for 50K words, while annual billing discounts those rates by about half (roughly $5.00-$21.25 per month). Custom business tiers add non-expiring credits, redistribution rights and priority support.

- **AI Detector:** Scans up to 5,000 words at a time and highlights the specific sentences most likely to be flagged as machine-written, so you can see your text the way a detector sees it.
- **AI Humanizer:** Rewrites AI-flagged passages with different sentence rhythms, vocabulary and tone, keeping your meaning while making the prose read like human writing.
- **Media authenticity checks:** Detectors for AI images, voice recordings, video and deepfakes, plus specialty document tools for checking whether a PDF or screenshot has been manipulated.
- **Chrome extension:** Detect and humanize directly inside Gmail, Google Docs or any web page without switching tabs.
- **API and business options:** An API lets teams plug humanizing into existing pipelines, while business plans offer white-labeling, higher volumes and non-expiring credits.

**Strengths:** Detector and humanizer live in one workflow, so you can flag and fix text without switching apps; Wide language coverage (50+ languages) with strong English accuracy; Extra media tools (image, audio, video, deepfake, fake PDF) beyond plain text; Chrome extension makes it usable inside the tools people already write in

**Limitations:** Detector results are probabilistic and can disagree with other detectors or with human reviewers; Free tier caps out at roughly 250 words, so any real workload needs a subscription; Word limits still apply even on paid tiers, so heavy publishing volumes require enterprise pricing; Humanized output sometimes needs a light manual edit to preserve nuance and technical accuracy

[Profile (Markdown)](https://openaitools.app/tool/undetectable-ai.md)

## Frequently Asked Questions

### How do Link Shield and Undetectable AI compare in monthly traffic?

Link Shield has 497 monthly visits, while Undetectable AI has 3,113,403. Traffic estimates describe audience size, not product quality.

### How do their growth rates compare?

Link Shield has a month-over-month growth rate of +4,041.7%; Undetectable AI has +17.5%.

### How does pricing compare?

Link Shield: Free Trial, Paid. Link Shield uses usage-based pricing with a free trial available to get started, so cost scales with the volume of URL scans you run rather than a flat seat fee. Exact per-call tiers and any volume discounts are published on the Link Shield site, and teams with high scan volumes should confirm current rates there before sizing a deployment. Undetectable AI: Freemium. Freemium. A free trial covers a limited number of words (currently 250). Paid monthly plans start around $9.99 for 10K words and scale to roughly $42.50 for 50K words, while annual billing discounts those rates by about half (roughly $5.00-$21.25 per month). Custom business tiers add non-expiring credits, redistribution rights and priority support.

## Alternatives

| # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Profile (Markdown) |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| 1 | [ZeroGPT](https://openaitools.app/tool/zerogpt) | 32,864,541 | +19.7% | Freemium, Paid | AI content detection and a full writing toolkit in one place | [.md](https://openaitools.app/tool/zerogpt.md) |
| 2 | [GPTZero](https://openaitools.app/tool/gptzero-me) | 23,246,989 | +32.5% | Freemium, Paid | AI detection and writing verification built for schools and editors | [.md](https://openaitools.app/tool/gptzero-me.md) |
| 3 | [HumanizeAI.pro](https://openaitools.app/tool/humanizeai-pro) | 9,652,312 | +26% | Free | Features a streamlined browser-based humanizer for quick rewrites, but lacks deeper multi-model detection scoring dashboards. | [.md](https://openaitools.app/tool/humanizeai-pro.md) |
| 4 | [StealthWriter](https://openaitools.app/tool/stealthwriter) | 2,887,114 | +15.5% | Freemium | Offers multiple AI humanizing engines and side-by-side editing, but can occasionally produce repetitive phrasing in longer essays. | [.md](https://openaitools.app/tool/stealthwriter.md) |
| 5 | [Walter Writes AI](https://openaitools.app/tool/walter-ai) | 1,474,367 | +24.4% | Freemium | Provides dedicated humanization and detection checking in a single workflow, but has a smaller user community and fewer presets. | [.md](https://openaitools.app/tool/walter-ai.md) |
| 6 | [Getsolved.ai](https://openaitools.app/tool/getsolved-ai) | 1,250,296 | +96.6% | Freemium | Functions as a broad academic writing workspace with humanizing features, but is less fine-tuned specifically for bypassing detectors. | [.md](https://openaitools.app/tool/getsolved-ai.md) |
| 7 | [Phrasly](https://openaitools.app/tool/phrasly-ai) | 1,209,985 | +17.9% | Freemium, Subscription | Provides an intuitive humanizer and writing assistant suite, but has fewer advanced customization parameters for strict detector bypass. | [.md](https://openaitools.app/tool/phrasly-ai.md) |
| 8 | [WriteHuman](https://openaitools.app/tool/writehuman) | 619,492 | +15.6% | Freemium, Paid | Delivers simple browser-based AI text humanization, but lacks the advanced batch processing and API access of Undetectable. | [.md](https://openaitools.app/tool/writehuman.md) |
| 9 | [Winston AI](https://openaitools.app/tool/winston-ai) | 604,454 | +5.4% | Freemium, Free Trial | Detect AI-generated text and images with benchmark-tested accuracy | [.md](https://openaitools.app/tool/winston-ai.md) |
| 10 | [Detecting-AI.com](https://openaitools.app/tool/detecting-ai-com) | 505,146 | +493% | Freemium, Paid | AI detector that highlights evidence, not just a score | [.md](https://openaitools.app/tool/detecting-ai-com.md) |

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Source: https://openaitools.app/compare/linkshieldapi-com-vs-undetectable-ai

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