PromptBase records 538,129 monthly visits with -1.8% month-over-month growth and Paid pricing. Sider records 2,644,740 monthly visits with -10.6% growth and Freemium pricing.
Buy a prompt that already works - or sell the ones you have perfected.
AI sidebar and browser agent for reading, writing and research
| Dimension / Metric | | |
|---|---|---|
| Official Domain | promptbase.com | sider.ai |
| Pricing Model | Paid | Freemium |
| Monthly Visits | 538.13K (538,129) | 2.64M (2,644,740) |
| MoM Traffic Delta | -9.85K (-1.8%) | -314.2K (-10.6%) |
| Primary Market & Share | 🇺🇸 United States (27.7%) | 🇺🇸 United States (13.3%) |
| Direct Visits / mo | 256.49K | 1.7M |
| User Rating | 3.7 | 4.5 |
| Supported Platforms | Website | Website |
Buy a prompt that already works - or sell the ones you have perfected.
Thousands of ready-to-use prompts organised by model and by output type, from illustration styles to marketing copy.
Listings are grouped by the model they were built for, so you can filter to the tool you actually use.
Each prompt is shown with example outputs, making it easy to judge the style before spending anything.
Anyone can upload prompts for sale and earn revenue share on every copy sold.
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.
SpecialistOpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research.
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.
SpecialistAnthropic's frontier AI workspace powered by Claude 5.5 for agentic coding, analysis, and nuanced writing.
Offers a very similar browser sidebar experience with multiple AI models, but features slightly different pricing and workspace tools.
Offers a very similar browser sidebar experience with multiple AI models, but features slightly different pricing and workspace tools.
Free / Open-sourceLargely free community-driven prompt sharing and instant chatting, rather than a transactional marketplace.
Free / Open-sourceLargely free community-driven prompt sharing and instant chatting, rather than a transactional marketplace.
Provides robust browser-based summarization and prompt assistance, but lacks some of Sider's deeply integrated multi-model chat UI features.
Provides robust browser-based summarization and prompt assistance, but lacks some of Sider's deeply integrated multi-model chat UI features.
SpecialistMassive free prompt search engine and discovery platform, but lacks PromptBase's direct creator monetization marketplace.
SpecialistMassive free prompt search engine and discovery platform, but lacks PromptBase's direct creator monetization marketplace.
Excels at advanced web automation and data extraction alongside chat, but has a steeper learning curve than Sider.
Free / Open-sourceSummarize YouTube, Google, and any page with AI — free in your browser
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.
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.
Delivers streamlined inline writing and webpage summarization via a browser extension, but with fewer custom sidebar tools.
SpecialistDeeply specialized catalog for Midjourney styles and reference codes, but lacks multi-model text and video coverage.
SpecialistDeeply specialized catalog for Midjourney styles and reference codes, but lacks multi-model text and video coverage.
Free / Open-sourceFree, community-curated AI prompt library for ChatGPT, Claude and Gemini
Free / Open-sourceFree, community-curated AI prompt library for ChatGPT, Claude and Gemini
