# AI Humanize vs Serpex

AI Humanize records 2,152,089 monthly visits with +8.1% month-over-month growth and Freemium, Paid pricing. Serpex records 2,405 monthly visits with -34.3% growth and Freemium, Free Trial, Paid pricing.

| Metric | [AI Humanize](https://openaitools.app/tool/ai-humanize) | [Serpex](https://openaitools.app/tool/serpex-dev) |
| :--- | :--- | :--- |
| Website URL | https://www.aihumanize.io | https://www.serpex.dev |
| Categories | Humanizer AI, AI Bypasser, Bypass AI, AI Rewriter | AI API, AI Web Scraping, AI Developer Tools, AI Search Engine |
| Pricing Model | Freemium, Paid | Freemium, Free Trial, Paid |
| Monthly Visits | 2,152,089 | 2,405 |
| MoM Growth Rate | +8.1% | -34.3% |
| Primary Market | United States | India |
| Direct Visits | 843,722 | 936 |
| Review Score | 3.7 | 4.3 |
| Saved Count | 6 | 0 |
| Supported Platforms | Website | Website |

## AI Humanize

AI Humanize is a browser-based rewriting tool aimed at people who already have a draft — usually one produced by a chatbot — and want it to read less mechanically. You paste text into the box (or upload a file), choose a purpose such as General, Academic, Blog, Formal or Informal, and the service returns a rewritten version. A quality selector lets you trade speed for more aggressive rewriting, and the free entry point gives new accounts a limited word allowance so you can test output before paying.

The platform markets itself around detector evasion, displaying logos of tools like Turnitin, GPTZero, Copyleaks, ZeroGPT, Quillbot, Sapling and Originality as things it claims to defeat. A notable feature set includes "Lock Keywords" and "Lock Citations", which keep important terms and references intact while the rest of the sentence structure is rewritten — useful for academic or technical writing where you cannot afford to lose specific terminology. There is also a history panel so you can revisit earlier rewrites.

Pricing is subscription-based with monthly and annual billing. Published tiers are Basic (about 20,000 humanizer words per month), Pro (about 60,000 words) and Unlimited, with annual billing discounted substantially versus paying month to month. Paid plans advertise an "Autopilot Pro" mode that repeats the rewrite until the output scores as human, a private rewriting model, daily AI-detection checks, and higher per-request input limits.

**Pricing & Plans:** Freemium with a limited free allowance for new users, then subscription plans (Basic, Pro, Unlimited) billed monthly or annually, with annual billing discounted by roughly 50-60%.

- **AI-to-human rewriting:** Restructures AI-written passages at the sentence and phrasing level so the result reads more naturally and less templated.
- **Tone and purpose presets:** Choose from General, Academic, Blog, Formal, Informal, Expand or Simplify so the rewrite matches the context you are writing for.
- **Lock Keywords and Citations:** Pins essential terms, names and references in place while everything around them is rephrased, reducing the risk of losing technical accuracy.
- **Detector-oriented Autopilot Pro:** A premium mode that re-runs the rewrite repeatedly in an attempt to reach a low AI-probability score.
- **Rewrite history:** Keeps a log of past jobs so you can compare outputs or reuse an earlier version without starting over.

**Strengths:** Simple paste-and-rewrite workflow with no software to install; Tone presets and keyword/citation locking fit academic and technical drafting; Annual billing is significantly cheaper than paying month to month; Free starting allowance lets you evaluate output quality first

**Limitations:** Detector-evasion claims cannot be guaranteed against tools that update constantly; Heavy use burns through word allowances quickly; Output still needs a human read-through for factual accuracy and nuance

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

## Serpex

Serpex provides two core endpoints behind a single API key: a Search endpoint that returns live web results as structured JSON, and an Extract endpoint that converts any URL into clean, readable markdown for AI ingestion. A standard search consumes one credit, and pulling page content along with results lets teams go from discovery to ingestion without juggling a second scraping vendor.

The service is positioned around affordability and throughput. Its published tiers scale from roughly $0.80 per 1,000 requests on small top-ups down to around $0.50 per 1,000 on the $500 tier, with custom pricing for very high volume. Serpex advertises automatic fallback across multiple underlying search sources, so if one source returns nothing the request fails over to another, along with retries and per-source health monitoring.

For developers, there are SDKs and integrations for Python, JavaScript, MCP and LangChain, plus a REST API. New accounts receive free trial credits without a card, and credits are described as non-expiring with a short money-back window on purchases.

**Pricing & Plans:** Pay-as-you-go credit model with a free trial (200 free credits, no card). Published tiers: Starter ~$0.80 per 1,000 requests ($5 top-up), Standard ~$0.65 per 1,000 ($50 top-up) and Scale ~$0.50 per 1,000 ($500 top-up); enterprise volume from ~$0.20 per 1,000. Credits are non-expiring and only successful requests are billed.

- **Search API returning structured JSON:** Send a query and receive live web results as clean, structured JSON that is ready for parsing, ranking or feeding into a model.
- **Built-in content extraction:** Convert any URL into clean, readable markdown in the same API key, removing boilerplate so retrieved text is directly usable for RAG and summarization.
- **Automatic source fallback:** Requests are routed across multiple underlying search sources with health monitoring and automatic retries, so a single empty source does not break your pipeline.
- **Developer SDKs and integrations:** Official libraries and snippets for Python, JavaScript, MCP and LangChain make it a few lines of code to add live search to an agent or app.
- **Pay-as-you-go credits:** Only successful requests consume credits, credits do not expire, and volume discounts scale from small top-ups up to high-throughput plans.

**Strengths:** Search and extraction in one API key, reducing vendor sprawl; Competitive pay-as-you-go pricing with volume discounts; Credits never expire and failed requests are not billed; Automatic fallback and retries reduce pipeline fragility

**Limitations:** No ability to pin a specific search engine source; engine selection is handled automatically; Free tier is a credit-based trial rather than an unlimited free plan

[Profile (Markdown)](https://openaitools.app/tool/serpex-dev.md)

## Frequently Asked Questions

### How do AI Humanize and Serpex compare in monthly traffic?

AI Humanize has 2,152,089 monthly visits, while Serpex has 2,405. Traffic estimates describe audience size, not product quality.

### How do their growth rates compare?

AI Humanize has a month-over-month growth rate of +8.1%; Serpex has -34.3%.

### How does pricing compare?

AI Humanize: Freemium, Paid. Freemium with a limited free allowance for new users, then subscription plans (Basic, Pro, Unlimited) billed monthly or annually, with annual billing discounted by roughly 50-60%. Serpex: Freemium, Free Trial, Paid. Pay-as-you-go credit model with a free trial (200 free credits, no card). Published tiers: Starter ~$0.80 per 1,000 requests ($5 top-up), Standard ~$0.65 per 1,000 ($50 top-up) and Scale ~$0.50 per 1,000 ($500 top-up); enterprise volume from ~$0.20 per 1,000. Credits are non-expiring and only successful requests are billed.

## Alternatives

| # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Profile (Markdown) |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| 1 | [DeepL](https://openaitools.app/tool/deepl) | 95,110,871 | -1.7% | Freemium | Enterprise-grade neural machine translation, AI writing refinement, and real-time voice translation across thirty-plus global languages. | [.md](https://openaitools.app/tool/deepl.md) |
| 2 | [QuillBot Paraphraser](https://openaitools.app/tool/quillbot-paraphraser) | 36,630,337 | +2.3% | Freemium | Excels at general paraphrasing and vocabulary enhancement, but is not specifically optimized for bypassing rigid AI detection tools. | [.md](https://openaitools.app/tool/quillbot-paraphraser.md) |
| 3 | [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) |
| 4 | [HumanizeAI.pro](https://openaitools.app/tool/humanizeai-pro) | 9,652,312 | +26% | Free | Delivers quick web-based text humanization for everyday drafts, but lacks advanced academic citation and grammar tools. | [.md](https://openaitools.app/tool/humanizeai-pro.md) |
| 5 | [Undetectable AI](https://openaitools.app/tool/undetectable-ai) | 3,113,403 | +17.5% | Freemium | Combines robust AI detection with multi-engine rewriting, but requires paid plans for full unthrottled bypass results. | [.md](https://openaitools.app/tool/undetectable-ai.md) |
| 6 | [StealthWriter](https://openaitools.app/tool/stealthwriter) | 2,887,114 | +15.5% | Freemium | Offers specialized multi-model humanization and editing modes, but can occasionally produce repetitive phrasing compared to standard rewriters. | [.md](https://openaitools.app/tool/stealthwriter.md) |
| 7 | [Firecrawl](https://openaitools.app/tool/firecrawl-dev) | 1,828,239 | -1.9% | Freemium, Contact for Pricing | Web data API that turns any site into clean, AI-ready content | [.md](https://openaitools.app/tool/firecrawl-dev.md) |
| 8 | [Phrasly](https://openaitools.app/tool/phrasly-ai) | 1,209,985 | +17.9% | Freemium, Subscription | Provides a polished writing assistant interface with integrated humanization, though output quality varies on complex technical prose. | [.md](https://openaitools.app/tool/phrasly-ai.md) |
| 9 | [TinyFish](https://openaitools.app/tool/tinyfish) | 1,124,952 | +199.7% | Freemium, Contact for Pricing | One API key for agent-grade web search, fetch, browsing and automation | [.md](https://openaitools.app/tool/tinyfish.md) |
| 10 | [Exa](https://openaitools.app/tool/exa-ai) | 1,062,574 | +16.8% | Freemium, Contact for Pricing | Web search API and crawler built for AI agents | [.md](https://openaitools.app/tool/exa-ai.md) |

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Source: https://openaitools.app/compare/ai-humanize-vs-serpex-dev

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