# Lexal vs Locus Lexal records 0 monthly visits with — month-over-month growth and Free pricing. Locus records 615 monthly visits with -85.1% growth and Freemium, Free Trial pricing. | Metric | [Lexal](https://openaitools.app/tool/lexal) | [Locus](https://openaitools.app/tool/locus) | | :--- | :--- | :--- | | Website URL | https://chromewebstore.google.com/detail/lexal/aempoekidhbmckjdidbgpgggagleocfm | https://locusextension.com | | Categories | Large Language Models (LLMs), AI Summarizer, AI API, AI Checker | AI Copilot, AI Research Tool, AI Summarizer, AI Search Engine | | Pricing Model | Free | Freemium, Free Trial | | Monthly Visits | 0 | 615 | | MoM Growth Rate | — | -85.1% | | Primary Market | Global | United States | | Direct Visits | 0 | 239 | | Review Score | 2.2 | 4.1 | | Saved Count | 0 | 3 | | Supported Platforms | Browser Extension | Website | ## Lexal Lexal takes a deliberately lightweight approach to AI in the browser. Rather than opening a chat tab, it rides on the right-click context menu: select a sentence, choose a function, and Gemini responds in a small overlay. That keeps you in the flow of whatever you are reading instead of switching between windows. The extension bundles four related reading aids. Fact check tests a claim against the model's knowledge; Bias check examines how a piece of writing frames its subject; Summarise/TLDR compresses long content into a short overview; and the debate mode deliberately argues both for and against a proposition, which is useful for pressure-testing an argument before you repeat it. All of these return output in the browser's current language. Architecturally, Lexal is honest about what it is: a standalone wrapper around a large language model. It does not run its own inference or resell tokens — you paste in your own Google Gemini developer API key, and the extension simply calls that model under your own quota. The developer states that no user data is collected, sold or shared, which is a sensible posture for a tool that needs access to whatever text is on your screen. It is a small, focused utility rather than a full AI assistant, and it is best judged as such. **Pricing & Plans:** Free. Lexal is a standalone wrapper that runs on your own Google Gemini developer API key and does not charge for tokens; you only pay Google if you exhaust the free Gemini credit allowance. - **One-click fact checking:** Select any statement and get Gemini to verify whether a specific claim holds up, right inside the page you are reading. - **Bias detection:** Scan an article and have the model call out framing, slant and potential bias so you can read more critically. - **Summarise / TLDR:** Condense long articles, threads or documents into a short TLDR you can skim in seconds. - **Two-sided LLM debates:** Generate balanced, well-reasoned arguments for and against a topic to stress-test your own position. - **Browser-language output:** Outputs are returned in your browser's language, so the tool fits naturally into a multilingual browsing session. **Strengths:** Completely free, with no token markup or subscription; Runs on your own Gemini API key, so there is no third-party data middleman; Right-click workflow keeps you inside the page you're reading; Combines four distinct reading aids — fact check, bias check, summary and debate — in one small extension **Limitations:** Tiny user base and no reviews, so reliability feedback is limited; Requires you to obtain and manage your own Gemini API key; Last updated in July 2024, so it may not track the newest Gemini models; Right-click only workflow — no persistent sidebar or full-page interface [Profile (Markdown)](https://openaitools.app/tool/lexal.md) ## Locus Locus reframes the browser search box around intent rather than exact text. Regular Ctrl+F only finds the words you already know; Locus uses natural-language processing so you can ask for a concept, a section, or an answer and be taken straight to the matching part of a page or PDF. This makes it particularly useful for long papers, dense textbooks, and news articles where you know what you want to learn but not the phrasing used on the page. Beyond finding text, Locus layers AI assistance on top of what you read. Its AI helpers summarize pages or passages, generate note cards for study, and suggest follow-up research topics, drawing on current large language models such as OpenAI GPT-4o and 4o mini, Anthropic Claude 3 Haiku, and Google Gemini 1.5 Flash. You can also bring your own OpenAI API key to unlock unlimited usage. Locus is built as a lightweight browser extension with a companion dashboard. A generous free tier covers personal reading and research, while a Professional plan removes document and action limits for heavier users. Reviews from students, analysts, and research assistants highlight its value in quickly narrowing long-form content down to the parts worth reading. **Pricing & Plans:** Free plan at $0 forever with daily document and AI-action limits; Professional plan at $7.50/month billed annually ($90) or $9/month with advanced AI models, faster processing, and no document limits, including a free trial. - **Natural-language smart search:** Use everyday language to find the exact section you need on any web page or PDF, catching matches that exact keyword search cannot. - **AI summarization:** Summarize entire pages or selected portions to save time and get the key takeaway quickly. - **Research and study helpers:** Locus AI helpers brainstorm research topics, suggest further reading, and generate note cards to help you retain information. - **Multiple LLM backends:** Choose from current models including OpenAI GPT-4o-family options, Anthropic Claude, and Google Gemini, with new releases added within days. - **Favorites and search history:** Save key search answers and passages to favorites so you can return to them across long papers and documents. **Strengths:** Makes long PDFs and web articles searchable by meaning, not just keywords; Combines search, summarization, and study tools in one extension; Free tier is genuinely usable for personal research; Supports multiple leading LLM providers and bring-your-own API key **Limitations:** Free plan caps searches and AI actions per day; Advanced models and no-limit usage sit behind the paid tier; Some AI features require bringing your own OpenAI API key for unlimited use [Profile (Markdown)](https://openaitools.app/tool/locus.md) ## Frequently Asked Questions ### How do Lexal and Locus compare in monthly traffic? Lexal has 0 monthly visits, while Locus has 615. Traffic estimates describe audience size, not product quality. ### How do their growth rates compare? Lexal has a month-over-month growth rate of —; Locus has -85.1%. ### How does pricing compare? Lexal: Free. Free. Lexal is a standalone wrapper that runs on your own Google Gemini developer API key and does not charge for tokens; you only pay Google if you exhaust the free Gemini credit allowance. Locus: Freemium, Free Trial. Free plan at $0 forever with daily document and AI-action limits; Professional plan at $7.50/month billed annually ($90) or $9/month with advanced AI models, faster processing, and no document limits, including a free trial. ## Alternatives | # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Profile (Markdown) | | :--- | :--- | :--- | :--- | :--- | :--- | :--- | | 1 | [Perplexity](https://openaitools.app/tool/perplexity-ai) | 88,310,223 | -3.7% | Freemium | Real-time AI answer engine and research workspace combining live web citations with frontier reasoning models. | [.md](https://openaitools.app/tool/perplexity-ai.md) | | 2 | [Monica](https://openaitools.app/tool/monica-ai) | 4,512,775 | -11.3% | Freemium | All-in-one AI assistant across web, browser, desktop and mobile | [.md](https://openaitools.app/tool/monica-ai.md) | | 3 | [SciSpace](https://openaitools.app/tool/scispace) | 4,464,111 | +8.6% | Freemium | AI research platform for reading, understanding and writing scientific papers | [.md](https://openaitools.app/tool/scispace.md) | | 4 | [Sider](https://openaitools.app/tool/sider) | 2,644,740 | -10.6% | Freemium | AI sidebar and browser agent for reading, writing and research | [.md](https://openaitools.app/tool/sider.md) | | 5 | [Merlin AI](https://openaitools.app/tool/merlin-ai) | 1,382,634 | +13.1% | Freemium | One-click AI assistant for browsing, writing and research | [.md](https://openaitools.app/tool/merlin-ai.md) | | 6 | [Merlin AI](https://openaitools.app/tool/merlin-ai-plugins) | 1,382,634 | +13.1% | Freemium | One AI assistant that plugs ChatGPT, Claude and Gemini into every tab | [.md](https://openaitools.app/tool/merlin-ai-plugins.md) | | 7 | [ChatPDF](https://openaitools.app/tool/chatpdf) | 1,044,477 | -3.7% | Freemium | Chat with any PDF, video, or website and get cited answers in seconds | [.md](https://openaitools.app/tool/chatpdf.md) | | 8 | [Glasp](https://openaitools.app/tool/glasp) | 889,564 | -14.1% | Freemium | Highlight the web, learn in public, and build your AI clone | [.md](https://openaitools.app/tool/glasp.md) | | 9 | [HARPA AI](https://openaitools.app/tool/harpa-ai) | 537,461 | +99.3% | Freemium | One browser agent that combines every major AI model with web automation | [.md](https://openaitools.app/tool/harpa-ai.md) | | 10 | [Glarity](https://openaitools.app/tool/glarity-summarize-google-and-youtube) | 188,823 | -49.6% | Freemium | Summarize YouTube, Google, and any page with AI — free in your browser | [.md](https://openaitools.app/tool/glarity-summarize-google-and-youtube.md) | --- Source: https://openaitools.app/compare/lexal-vs-locus More Markdown: [Categories](https://openaitools.app/categories.md) · [Traffic rankings](https://openaitools.app/rankings.md) · [llms.txt](https://openaitools.app/llms.txt)