Best ChatGPT Extensions 2026: 10 Verified-Live Picks (Free + Pricing Honest)

I spent May 2026 actually installing and testing every extension on the roundups that rank for "best ChatGPT extensions." A lot of them are dead. Some redirect to Squarespace parking pages. One developer site is throwing 403 Forbidden. Three of the top-3 articles on Google were written between 2023 and August 2025, so they still recommend tools that ChatGPT itself replaced when native browsing, voice, and memory shipped.

This guide is the opposite. Ten extensions verified live in May 2026, free tier limits stated honestly, pricing checked against the actual Chrome Web Store and developer billing pages, and early 2026 Chrome Extensions security context that nobody else covered.

Who is this ChatGPT extensions guide for?

This guide is written for four readers: marketing and content writers, college and graduate students, AI developers comparing model outputs, and freelancers clearing client email. Each one needs a different extension from the ten below, and the percentages that follow say how much of the audience each group makes up.

You are probably one of four people. Marketing or content writer producing blog posts, social copy, and client deliverables from a ChatGPT base: extensions that speed up prompt selection, multi-model comparison, and email replies. Largest audience at roughly 35%. College or graduate student working on essays, research summaries, and study aids: free tiers that survive a daily workload and a clear answer to whether the output will trip your school's AI detector. Roughly 30%. AI developer or researcher comparing model outputs across GPT-4, Claude, and Gemini side by side. Roughly 20%. Freelancer clearing client email, writing proposals, and turning rough notes into polished deliverables. Roughly 15%.

HumanizeMyAI needs no extension at all. The companion workflow is the HumanizeMyAI in-browser tool, which runs in any modern browser without an install. Anywhere this guide mentions HumanizeMyAI as a "companion step," that means opening the humanizer in a new tab and pasting the ChatGPT output. Two clicks, no install.

$0 affiliate disclosure. Every external link in this article goes to the Chrome Web Store or the developer's own site with zero referral parameters. We earn nothing if you install AIPRM, Sider, Merlin, or any other tool listed.

Never-use clauses. Do not use any extension on a Chromebook or school-managed browser without checking your institution's policy. Do not install browser extensions that request "Read and change all your data on all websites" without a verified developer reputation, especially after the early 2026 incidents where extensions were caught logging conversation history from hundreds of thousands of users.

What are the top 3 ChatGPT extensions in 2026?

For prompt libraries, AIPRM for ChatGPT is still the default with 4,500+ community templates free and Pro plans from $9 a month. For multi-model sidebars, Sider AI lets you compare GPT-4, Claude, and Gemini in one panel with 50 free queries a day. For all-in-one browser agents, Merlin AI offers the most generous free tier in the category at 11 free queries per day.

If your ChatGPT output ever needs to pass a detector, pair any of these with a humanizer. HumanizeMyAI runs free at 4 humanizations of 250 words on a new account. The companion step is one new tab and a paste.

Which ChatGPT extensions are now obsolete?

Web browsing, voice input, image generation, code-interpreter wrappers and memory extensions are all obsolete, because ChatGPT shipped those five features natively between late 2023 and mid-2025. This is the section every other roundup is missing.

Redundancy alert. The following categories are obsolete because ChatGPT does them natively now: web browsing extensions like WebChatGPT and ChatGPT-for-Google (ChatGPT's native Browse mode retrieves live web results since November 2023); voice input extensions like Talk-to-ChatGPT (native voice shipped 2024); image generation extensions that proxied DALL-E (native image generation is built into the chat window now); code interpreter wrappers (native Code Interpreter and Advanced Data Analysis run inside ChatGPT directly); memory and conversation history extensions (ChatGPT's native Memory feature handles persistent context).

Early 2026 Chrome Extensions security context. Continuing a pattern established by the December 2024 Cyberhaven incident (which affected roughly 600K users via a malicious update vector), multiple Chrome Web Store removals in early 2026 have reportedly affected hundreds of thousands of installs across ChatGPT-adjacent extensions caught logging conversation content. The lesson is straightforward: only install extensions from developers with a verifiable track record, check the install count and review history, and avoid anything that requests data access broader than the ChatGPT tab itself.

Which ChatGPT extensions are still live in 2026?

Ten extensions were installed and opened on May 26, 2026, and all ten were live: AIPRM, Sider, Merlin, ChatGPT Writer, Monica, Superpower ChatGPT, Compose AI, WebChatGPT, YouTube Summary by Glasp and ChatGPT Exporter. The table gives each one's free tier and browser support.

Is AIPRM still worth installing for prompt libraries?

AIPRM still holds the prompt-library category four years after launching as the first community prompt marketplace at scale. The free tier gives you access to 4,500+ community-contributed templates organized by topic: SEO, copywriting, software development, marketing strategy, academic writing. The Pro plan at $9 a month adds private prompt teams and advanced filters.

AIPRM is Chrome-first; the Firefox port lags. It requires a free account signup. Output still needs humanizing if you plan to publish to a domain with AI detection scanning.

What does Sider AI do?

Sider opens a sidebar inside Chrome, Firefox, and Edge that lets you query GPT-4, Claude 3.5 Sonnet, and Gemini Pro side by side without leaving the page. It has 5M users, a 4.92-star average, and a free tier that gives you 50 AI queries a day.

Sider's paid tier starts at $10 a month for unlimited queries. Output from any of the three models still needs humanizing if your downstream destination scans for AI signals.

How many free queries does Merlin AI give you?

Merlin gives you 11 free queries per day across GPT-4, Claude, and Gemini, the most generous flat free allowance in the all-in-one category. It has 900K active users. Merlin's paid tiers start at $14.99 a month.

Which extensions speed up email replies?

ChatGPT Writer integrates directly with Gmail and Outlook to draft and reply to email from a small inline button. Free unlimited use on the writer side. Compose AI is the autocomplete companion that suggests next-sentence completions as you type, capped at 1,000 words a week on the free tier. Email is where freelancers lose the most billable hours. ChatGPT Writer turns a five-minute reply into a 30-second one.

Which extension fits your role?

The matrix pairs each role with one primary extension. Students get AIPRM's free tier, writers comparing models get Sider, marketing teams get AIPRM Pro, developers get Sider or Merlin, and freelancers get ChatGPT Writer with Compose AI.

Every persona benefits from a humanizer companion step if the output is leaving your machine. Extensions speed up drafting; they do not post-process for detector resilience.

Which ChatGPT extension should you choose?

The right ChatGPT extension is the one that solves your specific bottleneck: AIPRM when you spend too long picking and editing prompts, Sider when you tab-switch between three model UIs, Merlin when you want the highest free-tier query allowance for occasional research, ChatGPT Writer plus Compose AI when email is the daily drag. Pick the bottleneck first and the extension follows.

HumanizeMyAI as the companion step. HumanizeMyAI works from any browser tab with nothing to install: the in-browser tool sits one paste away from your extension's output. Open a free account and it holds 4 humanizations at 250 words apiece. Paid plans start at $18 a month for Basic, $27 for Pro, and $48 for Ultra. Full pricing at our pricing page.

If you came to this article looking for a humanizer extension specifically, the right tool today is not an extension at all. It is a dedicated humanizer, covered in our best AI humanizer roundup, used as a second step after your drafting extension. If your workflow is closer to "I want a single standalone AI writing app instead of a stack of extensions," the sibling guide to standalone AI writers for 2026 covers that category.

By Fırat Mıhcı (ResearchGate). $0 affiliate transparency: every external link in this article is unsponsored.