OpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research.
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Chrome extension to read and chat with PDFs on ChatGPT, Claude, and DeepSeek.

According to OpenAITools.app telemetry verified on 2026-10-07, Side Reader (side-reader.com) is an AI platform indexed under AI Chatbot generating 355 monthly visits with a month-over-month traffic delta of -204 (-36.5%). Its primary geographic market is Vietnam (100% traffic share), and it operates on a Freemium pricing model. Top competing alternatives by monthly volume include ChatGPT (5.92B visits/mo), Google Gemini (2.64B visits/mo), Claude (1.01B visits/mo).
Chrome extension to read and chat with PDFs on ChatGPT, Claude, and DeepSeek.
Side-by-side telemetry comparison of competing AI tools in the same primary category
| Rank | AI Tool | Monthly Visits | MoM Growth | Stickiness | Pricing | Head-to-Head |
|---|---|---|---|---|---|---|
| ● | Side Reader | 355 | -36.5% | — | Freemium | Current |
| 1 | ChatGPT | 5.92B | +5% | 74% Direct | Freemium | vs ChatGPT |
| 2 | Google Gemini | 2.64B | +0.9% | 62% Direct | Freemium | vs Google Gemini |
| 3 | Claude | 1.01B | +6.6% | 73% Direct | Freemium | vs Claude |
| 4 | DeepSeek | 357.4M | +1% | 78% Direct | Freemium | vs DeepSeek |
| 5 | OpenAI Platform | 259.46M | +27% | 43% Direct | Paid | vs OpenAI Platform |
| 6 | Grok | 205.46M | -2% | 66% Direct | Freemium | vs Grok |
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