
SpecialistOpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research.

Sider records 2,644,740 monthly visits with -10.6% month-over-month growth and Freemium pricing. Typeahead records 10,384 monthly visits with +22.8% growth and Paid pricing.

AI autocomplete for your entire Mac, running locally and never sending your writing to a server
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | sider.ai | typeahead.ai |
| Pricing Model | Freemium | Paid |
| Monthly Visits | 2.64M (2,644,740) | 10.38K (10,384) |
| MoM Traffic Delta | -314.2K (-10.6%) |
| +1.93K (+22.8%) |
| Primary Market & Share | 🇺🇸 United States (13.3%) | 🇺🇸 United States (64.5%) |
|---|
| Direct Visits / mo | 1.7M | 4.15K |
|---|
| User Rating | 4.5 | 4.3 |
|---|
| Supported Platforms | Website | Website |
|---|
AI sidebar and browser agent for reading, writing and research
A persistent panel that reads the page you are on and answers follow-ups with GPT, Claude or Gemini without copying content into another tab.
Summarise long articles, PDFs and YouTube videos, extract key points, and ask detailed questions about the source material.
Translate webpages, PDFs and images, compare bilingual output side by side, and have content read aloud for review on the move.
Delegate multi-step tasks across real websites — price comparison, form filling, research and inbox triage — using your existing logged-in sessions.

AI autocomplete for your entire Mac, running locally and never sending your writing to a server
Faint ghost text completes the word or sentence you are typing right at the cursor. Tab accepts the entire suggestion, the right arrow takes just the next word, and Esc dismisses it so you stay in control.
The model runs on your Mac rather than in the cloud. Typeahead never sends your writing to a server and keeps working offline after setup, which makes it suitable for work email and sensitive documents.
It reads what is on screen and what you copied to the clipboard, so replies fit the thread you are actually answering rather than being generic filler.
Set a voice per app, professional in Mail and friendly in Messages, choose from seven color-blind-safe highlight shades, and tune suggestion timing to instant, balanced or only when you pause.

SpecialistOpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research.

SpecialistAnthropic's frontier AI workspace powered by Claude 5.5 for agentic coding, analysis, and nuanced writing.

Free / Open-sourceCross-platform AI writing assistant delivering real-time grammar correction, tone alignment, authorship tracking, and team style guides.
#3
Offers a very similar browser sidebar experience with multiple AI models, but features slightly different pricing and workspace tools.
Provides robust browser-based summarization and prompt assistance, but lacks some of Sider's deeply integrated multi-model chat UI features.
Excels at advanced web automation and data extraction alongside chat, but has a steeper learning curve than Sider.

Free / Open-sourceAI writing assistant with autocomplete, research, and a Chrome extension

Free / Open-sourceAI writing and site management for WordPress


Free / Open-sourceSummarize YouTube, Google, and any page with AI — free in your browser
Integrates bookmark management and content composition into a clean sidebar, but has a more limited feature set than Sider.
Delivers streamlined inline writing and webpage summarization via a browser extension, but with fewer custom sidebar tools.

Free / Open-sourceAI autocomplete that finishes your sentences wherever you type
SpecialistOpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research.
SpecialistAnthropic's frontier AI workspace powered by Claude 5.5 for agentic coding, analysis, and nuanced writing.
Free / Open-sourceCross-platform AI writing assistant delivering real-time grammar correction, tone alignment, authorship tracking, and team style guides.
Offers a very similar browser sidebar experience with multiple AI models, but features slightly different pricing and workspace tools.
Provides robust browser-based summarization and prompt assistance, but lacks some of Sider's deeply integrated multi-model chat UI features.
Free / Open-sourceAI writing assistant with autocomplete, research, and a Chrome extension
Free / Open-sourceSummarize YouTube, Google, and any page with AI — free in your browser
Integrates bookmark management and content composition into a clean sidebar, but has a more limited feature set than Sider.
Delivers streamlined inline writing and webpage summarization via a browser extension, but with fewer custom sidebar tools.
Free / Open-sourceAI autocomplete that finishes your sentences wherever you type