How do their growth rates compare?

Formix AI has a month-over-month growth rate of -61.7%; Sider has -10.6%.

How does pricing compare?

Formix AI: Freemium. Freemium. The core Chrome extension is free to use with limits on form and document size. A Formix Pro tier at $5/month raises the daily usage limit, allows larger document bases, keeps a longer prompt history, improves precision, and adds priority support. Sider: Freemium. Freemium. Free tier available with limited credits; paid plans advertised at roughly US$10/month for occasional use up to around US$100/month at the top tier, with higher credit allowances and a dedicated cloud computer on the upper plans.

What are alternatives to Formix AI and Sider?

Other tools in related categories include ChatGPT, Claude, Monica, Fillout, Merlin AI.

Formix AI vs Sider — Traffic (1.15K vs 2.64M), Pricing & Verdict

Open AI Tools

Formix AI vs Sider — Traffic (1.15K vs 2.64M), Pricing & Verdict | Open AI Tools

Side-by-Side Traffic & Specification Matrix

Dimension / Metric	Formix AI	Sider
Official Domain	formix.ai	sider.ai
Pricing Model	Freemium	Freemium
Monthly Visits	1.15K (1,147)	2.64M (2,644,740)
MoM Traffic Delta	-1.84K (-61.7%)	-314.2K (-10.6%)
Primary Market & Share	🇺🇸 United States (56.7%)	🇺🇸 United States (13.3%)
Direct Visits / mo	391	1.7M
User Rating	4.1	4.5
Supported Platforms	Website	Website

Formix AI

Fill online forms and PDFs instantly with a private AI autofill assistant

AI-powered intelligent autofill

Formix reads the documents and prompts you provide and predicts the correct value for each form field, filling text inputs and dropdowns automatically while you keep control.

Local-only data storage

Your input documents, prompts, and history live in your Chrome browser storage, not on a remote server, so personal details stay on your device.

Reviewable, regeneratable values

Every AI-generated value is highlighted so you can check it, and any single field can be regenerated with a reload button without redoing the whole form.

Works with web and PDF forms

Use it on job applications, shopping checkouts, classified listings, Google Forms, and PDF documents, as long as the page structure is supported.

Strengths & Pros

+Keeps your documents and prompts on-device rather than on a server
+Highlights generated values and lets you regenerate individual fields, so you stay in control
+Works across a wide variety of websites including job boards, marketplaces, and Google Forms
+Free to use, with an inexpensive Pro tier for heavier users