Prompastic records 1,093 monthly visits with -7.1% month-over-month growth and Free pricing. Sider records 2,644,740 monthly visits with -10.6% growth and Freemium pricing.
Structured, model-ready prompts instead of guesswork
AI sidebar and browser agent for reading, writing and research
| Dimension / Metric | ||
|---|---|---|
| Official Domain | prompastic.ai | sider.ai |
| Pricing Model | Free | Freemium |
| Monthly Visits | 1.09K (1,093) | 2.64M (2,644,740) |
| MoM Traffic Delta | -83 (-7.1%) | -314.2K (-10.6%) |
| Primary Market & Share | 🇷🇺 Russia (48.2%) | 🇺🇸 United States (13.3%) |
| Direct Visits / mo | 410 | 1.7M |
| User Rating | 4.2 | 4.5 |
| Supported Platforms | Website | Website |
Structured, model-ready prompts instead of guesswork
Describe a concept once and get a clean composition, correct style application and reduced artifacts. Syntax is adapted automatically for Midjourney, Stable Diffusion, SDXL, DALL-E 3 or Flux.
Structured video prompts cover camera movement, scene setup, lighting and atmosphere so motion clips stay temporally coherent with professional pacing.
Build context, set tone and apply marketing frameworks to produce clear briefs for writing, social media and business copy, with support for scaling output.
Define roles, behavioral rules, constraints and output formatting to create personas and system instructions for custom GPTs and AI agents.
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.
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.
SpecialistTurn lazy prompts into great ones and get more out of any large language model
SpecialistTurn lazy prompts into great ones and get more out of any large language model
AI toolkit for writing, enhancing and reversing image prompts
AI toolkit for writing, enhancing and reversing image prompts
Excels at advanced web automation and data extraction alongside chat, but has a steeper learning curve than Sider.
SpecialistAnalyze, optimize and organize prompts in one AI workspace
SpecialistAnalyze, optimize and organize prompts in one AI workspace
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.
SpecialistDescribe a goal, get a ready-to-run AI prompt for ChatGPT, Claude or Gemini
SpecialistDescribe a goal, get a ready-to-run AI prompt for ChatGPT, Claude or Gemini
