How do their growth rates compare?

Sider has a month-over-month growth rate of -10.6%; Yoptio has 0%.

How does pricing compare?

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. Yoptio: Free. Yoptio is presented as a free AI-powered RSS reader. No dedicated pricing page is published, so confirm current plan details and any limits on the site.

What are alternatives to Sider and Yoptio?

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

Head-to-Head Benchmark

Sider vs Yoptio

Sider records 2,644,740 monthly visits with -10.6% month-over-month growth and Freemium pricing. Yoptio records 0 monthly visits with 0% growth and Free pricing.

SiderFreemiumTraffic Leader

AI sidebar and browser agent for reading, writing and research

Monthly Visits

2.64M

MoM Velocity

-10.6%

Top Market

🇺🇸 United States

View Sider Analysis

sider.ai

YoptioFree

Your feeds, one calm stream — summarised, read aloud and filtered by AI.

Monthly Visits

0

MoM Velocity

0%

Top Market

🌐 Global

View Yoptio Analysis yoptio.com

Side-by-Side Traffic & Specification Matrix

Dimension / Metric	Sider	Yoptio
Official Domain	sider.ai	yoptio.com
Pricing Model	Freemium	Free
Monthly Visits	2.64M (2,644,740)	0 (0)
MoM Traffic Delta	-314.2K (-10.6%)

Primary Market & Share	🇺🇸 United States (13.3%)	🌐 Global (—)

Direct Visits / mo	1.7M	0

User Rating	4.5	4.1

Supported Platforms	Website	Website

Sider

AI sidebar and browser agent for reading, writing and research

AI sidebar on any page

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 and chat with documents

Summarise long articles, PDFs and YouTube videos, extract key points, and ask detailed questions about the source material.

Translation and read-aloud

Translate webpages, PDFs and images, compare bilingual output side by side, and have content read aloud for review on the move.

Sider Hand browser agent

Delegate multi-step tasks across real websites — price comparison, form filling, research and inbox triage — using your existing logged-in sessions.

Strengths & Pros

+Works inside the browser you already use, with no context switching
+Access to multiple frontier models from one subscription
+Strong reading toolkit: PDF chat, YouTube summaries, translation and read-aloud
+Increasingly capable agent features for multi-step browser tasks

Limitations

Frequently Asked Questions: Sider vs Yoptio

Sider has 2,644,740 monthly visits, while Yoptio has 0. Traffic estimates describe audience size, not product quality.

More Head-to-Head Matchups

Best Alternatives to Sider & Yoptio (12)

–Useful credits run out quickly on the free and lower tiers
–Model availability and quota rules change over time, so expectations must be checked per plan
–Some agent and code features depend on a cloud machine and heavier plans

Yoptio

Your feeds, one calm stream — summarised, read aloud and filtered by AI.

Unified chronological feed

Bring the RSS feeds you already follow into one clean, time-ordered stream instead of hopping between apps and tabs.

AI article summaries

Every article gets a concise AI-generated summary so you can judge whether it is worth the full read.

Audio playback

Have articles read aloud so you can catch up while commuting, cooking or working out.

Daily AI news briefing

A daily AI-curated digest rounds up the most relevant items from your sources in one short briefing.

Strengths & Pros

+Turns a messy pile of feeds into one tidy chronological timeline
+AI summaries and audio playback cut reading time significantly
+Keyword muting is a genuinely useful defence against spoilers and ragebait
+Simple, reader-first design with no algorithmic agenda

Limitations

–The interface is deliberately minimal, so anyone expecting a social or algorithmic discovery layer will find it plain

–You supply your own feeds — there is no built-in feed directory or recommendation engine

–Some newer capabilities depend on signing in, and pricing details are not spelled out on a dedicated page

01

ChatGPT

6B/mo

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

AI ChatbotFreemium+2.2%

02

Claude

1.3B/mo

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

AI AssistantFreemium+23.8%

#2

03

Monica

4.5M/mo

Offers a very similar browser sidebar experience with multiple AI models, but features slightly different pricing and workspace tools.

AI AssistantFreemium55% direct

Monica web app showing an AI chat conversation with model selector and sidebar tools

#3

04

Merlin AI

1.4M/mo

Provides robust browser-based summarization and prompt assistance, but lacks some of Sider's deeply integrated multi-model chat UI features.

AI AssistantFreemium+13.1%

Merlin AI Chrome extension sidebar summarizing a webpage

05

HARPA AI

537.5K/mo

Excels at advanced web automation and data extraction alongside chat, but has a steeper learning curve than Sider.

AI AgentFreemium+99.3%

HARPA AI extension panel showing model selection and page-aware prompt shortcuts on a website

06

Peech: Text to Speech Reader

353.1K/mo

SpecialistListen to anything. Beautifully.

AI Text-to-SpeechFreemium9% direct

Peech: Text to Speech Reader interface preview

07

Glarity

188.8K/mo

Free / Open-sourceSummarize YouTube, Google, and any page with AI — free in your browser

AI SummarizerFreemium7% direct

Screenshot of Glarity summarizing a YouTube video with timestamped highlights in the sidebar

08

Kome AI

174.9K/mo

Integrates bookmark management and content composition into a clean sidebar, but has a more limited feature set than Sider.

AI SummarizerFreemium30% direct

Kome AI extension summarizing a long article and saving it to the bookmark library

09

Voilà AI assistant browser extension overlay showing chat, writing and summarise options

Voilà — AI Assistant, Chat and Writer

152.2K/mo

Delivers streamlined inline writing and webpage summarization via a browser extension, but with fewer custom sidebar tools.

AI AssistantFreemium45% direct

Voilà — AI Assistant, Chat and Writer interface preview

10

Zeli

56.1K/mo

SpecialistHacker News and AI paper summaries in seven languages

AI Article SummarizerFree71% direct

Zeli story page showing a translated Hacker News title, an AI summary, a key quote and highlighted discussion comments

11

Mochii

27K/mo

One AI sidebar for ChatGPT, Claude and Gemini across the web

AI AssistantFreemium40% direct

Mochii web app interface displaying custom AI characters and a chat conversation

12

Particle

15.6K/mo

SpecialistPersonalized news, summarized from many sources

AI NewsFree76% direct

Particle story page displaying an AI summary with the number of source articles behind it

#1

Visit

ChatGPT

6B/mo+2.2%

Official

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

AI Chatbot73% direct

Freemium

Visit

Claude

1.3B/mo+23.8%

Official

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

AI Assistant72% direct

Freemium

Visit

Monica

4.5M/mo

Offers a very similar browser sidebar experience with multiple AI models, but features slightly different pricing and workspace tools.

AI Assistant55% direct

Freemium

Visit

Merlin AI

1.4M/mo+13.1%

Provides robust browser-based summarization and prompt assistance, but lacks some of Sider's deeply integrated multi-model chat UI features.

AI Assistant50% direct

Freemium

Visit

HARPA AI

537.5K/mo+99.3%

Excels at advanced web automation and data extraction alongside chat, but has a steeper learning curve than Sider.

AI Agent76% direct

Freemium

Visit

Peech: Text to Speech Reader

353.1K/mo

SpecialistListen to anything. Beautifully.

AI Text-to-Speech9% direct

Freemium

Visit

Glarity

188.8K/mo

Free / Open-sourceSummarize YouTube, Google, and any page with AI — free in your browser

AI Summarizer7% direct

Freemium

Visit

Kome AI

174.9K/mo

Integrates bookmark management and content composition into a clean sidebar, but has a more limited feature set than Sider.

AI Summarizer30% direct

Freemium

Visit

Voilà — AI Assistant, Chat and Writer

152.2K/mo

Delivers streamlined inline writing and webpage summarization via a browser extension, but with fewer custom sidebar tools.

AI Assistant45% direct

Freemium

Visit

Zeli

56.1K/mo

SpecialistHacker News and AI paper summaries in seven languages

AI Article Summarizer71% direct

Free

Visit

Mochii

27K/mo

One AI sidebar for ChatGPT, Claude and Gemini across the web

AI Assistant40% direct

Freemium

Visit

Particle

15.6K/mo

SpecialistPersonalized news, summarized from many sources

AI News76% direct

Free

Sider vs Yoptio

Side-by-Side Traffic & Specification Matrix

Sider

Strengths & Pros

Limitations

Frequently Asked Questions: Sider vs Yoptio

How do Sider and Yoptio compare in monthly traffic?

How do their growth rates compare?

How does pricing compare?

What are alternatives to Sider and Yoptio?

More Head-to-Head Matchups

Best Alternatives to Sider & Yoptio (12)

Yoptio

Strengths & Pros

Limitations