
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. VS Code records 7,397,370 monthly visits with -3.8% growth and Freemium pricing.
AI sidebar and browser agent for reading, writing and research
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | sider.ai | code.visualstudio.com |
| Pricing Model | Freemium | Freemium |
| Monthly Visits | 2.64M (2,644,740) | 7.4M (7,397,370) |
| MoM Traffic Delta | -314.2K (-10.6%) |
| -288.8K (-3.8%) |
| Primary Market & Share | 🇺🇸 United States (13.3%) | 🇺🇸 United States (18.9%) |
|---|
| Direct Visits / mo | 1.7M | 2.17M |
|---|
| User Rating | 4.5 | 4.8 |
|---|
| 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.

Write code with precision, hand bigger jobs to agents, and keep working from anywhere
Agents open the repository, form a plan, edit multiple files and explain the changes so you can review each diff before accepting it. You can also run several agents in parallel to push a backlog forward.
Point the editor at Anthropic, OpenAI, Google, Microsoft or open-weight models, or bring your own key. Pick the Copilot, Claude or Codex harness that matches how you like to work.
JavaScript, TypeScript, HTML and CSS work out of the box, and Marketplace extensions add IntelliSense, linting, refactoring and debuggers for Python, Java, C++, Go, Rust and more.
Integrated terminal, source control, debugger, testing, Jupyter notebooks, an integrated browser and Dev Containers all live in one window, so you stay close to the code.

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.

AI-native code editor built on VS Code fork with deep multi-file editing and intelligent codebase indexing.
Agentic development platform offering an IDE and command center for running parallel AI coding agents.

SpecialistCloud-based development environment featuring an AI agent that builds, runs, and deploys full-stack applications instantly.
Agentic coding platform and IDE plugin that reads entire codebases to plan and complete multi-file tasks.

Offers a very similar browser sidebar experience with multiple AI models, but features slightly different pricing and workspace tools.
Spec-driven AI IDE and agent platform from AWS that plans, builds, reviews, and verifies engineering work.
SpecialistAutonomous AI software engineer that independently plans, writes, and tests code across entire repositories.
Free / Open-sourceLightweight, customizable terminal coding agent supporting multiple model providers and extensible packages.
Provides robust browser-based summarization and prompt assistance, but lacks some of Sider's deeply integrated multi-model chat UI features.

Free / Open-sourceOpen-source workspace control plane for orchestrating multiple coding agents from a single unified interface.
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.
AI-native code editor built on VS Code fork with deep multi-file editing and intelligent codebase indexing.
Agentic development platform offering an IDE and command center for running parallel AI coding agents.
SpecialistCloud-based development environment featuring an AI agent that builds, runs, and deploys full-stack applications instantly.
Agentic coding platform and IDE plugin that reads entire codebases to plan and complete multi-file tasks.
Offers a very similar browser sidebar experience with multiple AI models, but features slightly different pricing and workspace tools.
Spec-driven AI IDE and agent platform from AWS that plans, builds, reviews, and verifies engineering work.
SpecialistAutonomous AI software engineer that independently plans, writes, and tests code across entire repositories.
Free / Open-sourceLightweight, customizable terminal coding agent supporting multiple model providers and extensible packages.
Provides robust browser-based summarization and prompt assistance, but lacks some of Sider's deeply integrated multi-model chat UI features.