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Hey Design AI vs Mnemosphere

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

Hey Design AI compared with Mnemosphere
DetailHey Design AI logo Hey Design AIMnemosphere logo Mnemosphere
What it doesCurated website design prompts that turn visual direction into copy-ready build briefs for AI builders AI research workspace with multiple top-tier models and powerful tools for deep research and analysis
StageStartup Not given
Founded2026 Not given
Based inNot given SG
Pricing modelFreemium Paid
PricingSingle prompt: $29.90 (permanent access to 1 prompt). Standard annual: $299 (up to 5 prompts daily unlock for 365 days). Premium annual: $999 (up to 20 prompts daily unlock for 365 days, team access, MCP support). 20 fixed prompts available free. Pro plan: $25/month. Ultra plan: higher tier with multi-model deep research, pro mindmaps, lite threads, up to 1000 messages per month, and personalized support. Both plans include 14-day money-back guarantee.
Key features
  • 350 curated website design prompts
  • Visual previews with design briefs and craft notes
  • Tested against WCAG 2.2 and Core Web Vitals standards
  • Works with Lovable, v0, Bolt, Replit, Claude Code, and Cursor
  • Mobile responsive behavior included in prompts
  • Negative constraints to prevent generic AI patterns
  • Keyboard and accessibility guidance
  • Reduced-motion states for motion support
  • MCP retrieval for Premium annual subscribers
  • 365-day annual access with no auto-renewal
  • Multi-model chat with all frontier models (GPT-5.5, Claude 4.6 Sonnet, Gemini 3.1 Pro, Grok 4.2, DeepSeek V4 Pro)
  • Parallel prompts to run multiple models simultaneously
  • Instant mindmaps to visualize complex ideas
  • 1-click critique to improve AI outputs
  • Inline highlighter and notes for capturing insights
  • Chat with YouTube videos by pasting links
  • Multiple deep researches across OpenAI, Gemini, and Perplexity
  • Prompt Assist with power phrases for better prompts
  • Lite Threads for quick clarifications without leaving main thread
  • Conversation Index to navigate long chats easily
What makes it different
  • Editorial curation rather than scraped prompts
  • Tested design briefs with clear reasoning for each choice
  • Designed for commercial use and client projects
  • Model-agnostic prompts that work across multiple AI builders
  • Clear art direction to prevent designs from becoming generic collages
  • Access all frontier models in one workspace instead of juggling multiple subscriptions
  • Compare models side-by-side and cherry-pick the best responses
  • Instant mindmaps and visualizations instead of plain text responses
  • Designed specifically for power users and deep research, not average users
  • No free tier ensures professional, focused tool
Community votes00
DR (Domain Rating by Ahrefs)13 no change since last check21 no change since last check
Trust Flow (Majestic)44
Citation Flow (Majestic)2017
Referring domains (Majestic)6178

5 details filled in for both companies.

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