# CapSolver vs Undetectable AI

CapSolver records 73,385 monthly visits with -30.9% 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 | [CapSolver](https://openaitools.app/tool/capsolver) | [Undetectable AI](https://openaitools.app/tool/undetectable-ai) |
| :--- | :--- | :--- |
| Website URL | https://dashboard.capsolver.com/passport/register?inviteCode=izMa7-lseCCg | https://undetectable.ai |
| Categories | AI Bypasser, AI API, AI Developer Tools, AI OCR | AI Detector, AI Content Detector, AI Checker, Humanizer AI |
| Pricing Model | Free Trial, Paid | Freemium |
| Monthly Visits | 73,385 | 3,113,403 |
| MoM Growth Rate | -30.9% | +17.5% |
| Primary Market | United States | United States |
| Direct Visits | 55,197 | 2,336,720 |
| Review Score | 4.2 | 3.8 |
| Saved Count | 2 | 30 |
| Supported Platforms | Website | Website |

## CapSolver

CapSolver is a CAPTCHA recognition service built for developers, data teams, and automation engineers who need to get past anti-bot challenges programmatically. Rather than relying on manual solving, it pairs AI image recognition and OCR models with solving infrastructure to return valid tokens for common challenge types such as reCAPTCHA, hCaptcha, and Cloudflare Turnstile.

Integration is designed to be low-friction: you send a request describing the target challenge, and the service responds with a solution token you can inject into your workflow. Alongside the HTTP API, browser extensions and automation-tool integrations let teams embed solving into scraping pipelines, QA suites, and browsing sessions without rebuilding their stack.

Access is credit-based. New users get a free trial to validate accuracy and integration, then top up a balance that is consumed per solve, so cost tracks actual volume. Because solving reliability varies by challenge type and target site, teams typically monitor success rates and fall back to alternatives when a specific deployment proves difficult.

**Pricing & Plans:** Free trial available for evaluation, followed by pay-as-you-go credit top-ups consumed per successful solve. Exact rates depend on the challenge type and volume, so check the dashboard for current pricing.

- **Broad challenge coverage:** Handles popular challenge types including reCAPTCHA, hCaptcha, Cloudflare Turnstile, and image or OCR-based recognition.
- **Simple API integration:** A straightforward HTTP API lets developers submit challenges and receive solution tokens programmatically.
- **Browser extensions:** Extensions and browser-automation hooks make it easier to solve challenges inside real browsing sessions.
- **AI and OCR recognition:** Image recognition plus OCR models are applied to text and picture CAPTCHAs as well as interactive puzzles.
- **Pay-as-you-go pricing:** Credits are consumed per solve, so costs scale with actual usage rather than a fixed seat license.

**Strengths:** Handles a wide range of CAPTCHA types through one API; Free trial lets teams validate accuracy before paying; Pay-as-you-go credits keep costs proportional to usage; Extensions and automation integrations speed up setup

[Profile (Markdown)](https://openaitools.app/tool/capsolver.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 CapSolver and Undetectable AI compare in monthly traffic?

CapSolver has 73,385 monthly visits, while Undetectable AI has 3,113,403. Traffic estimates describe audience size, not product quality.

### How do their growth rates compare?

CapSolver has a month-over-month growth rate of -30.9%; Undetectable AI has +17.5%.

### How does pricing compare?

CapSolver: Free Trial, Paid. Free trial available for evaluation, followed by pay-as-you-go credit top-ups consumed per successful solve. Exact rates depend on the challenge type and volume, so check the dashboard for current pricing. 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 | [Roboflow](https://openaitools.app/tool/roboflow) | 1,431,204 | +6.6% | Freemium, Contact for Pricing | Build, train, and deploy computer vision for the physical world | [.md](https://openaitools.app/tool/roboflow.md) |
| 7 | [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) |
| 8 | [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) |
| 9 | [CapMonster Cloud](https://openaitools.app/tool/capmonster-cloud) | 862,340 | +36.3% | Paid | AI-powered CAPTCHA solving API built for scale | [.md](https://openaitools.app/tool/capmonster-cloud.md) |
| 10 | [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) |

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

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