Best Alternatives to Sider
Chrome extension sidebar AI - free access to GPT-4o/Claude 3.5/Gemini on any webpage. Summarize/translate/write without tab switching. 2M+ Chrome Web Store users. Our comprehensive comparison helps you find the perfect Extensions ChatGPT alternative based on pricing, features, privacy, and workflow requirements. We've hand-picked the top-rated tools with strong free tiers and proven user satisfaction.
Quick Comparison
| Tool | Pricing | Best For |
|---|---|---|
| Le Chat by Mistral AI | free | Mistral AI's official assistant offering Flash Answers at ~1... |
| ChatSonic | free | AI chat assistant within Writesonic with real-time Google we... |
| GPTZero | free | Detect AI-generated text in documents and submissions with s... |
| Gemini AI | free | Google's multimodal AI assistant for writing, coding, resear... |
| Kimi.ai | free | Moonshot AI's multimodal assistant with long-context documen... |
Le Chat by Mistral AI
Mistral AI's official assistant offering Flash Answers at ~1,000 words per second, real-time AFP-sourced web search, image generation, code execution, and EU-compliant data privacy across free and paid plans.
ChatSonic
AI chat assistant within Writesonic with real-time Google web search, multi-model LLM support, PDF analysis, image generation, YouTube summarization, and brand voice customization.
GPTZero
Detect AI-generated text in documents and submissions with sentence-level analysis and detailed probability reports.
Gemini AI
Google's multimodal AI assistant for writing, coding, research, and image analysis — free with optional Advanced tier.
Kimi.ai
Moonshot AI's multimodal assistant with long-context document processing, image analysis, and coding support.
Qwen 3
Open-source multilingual LLM for reasoning, code generation, translation, and agentic workflow integration.
DeepSeek-R1
Free open-source LLM built for mathematical reasoning, scientific analysis, and accurate code generation.
Pi AI
Conversational AI assistant by Inflection AI for personal dialogue, reflection, and everyday information queries.
ChatGPT
OpenAI's general-purpose AI assistant for writing, coding, research, and analysis with free and paid subscription plans.
Microsoft Copilot
Microsoft's AI assistant offering free chat, web search, and image generation, with optional Microsoft 365 integration for productivity workflows.