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UnicornFork vs assistant-ui

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

UnicornFork compared with assistant-ui
DetailUnicornFork logo UnicornForkassistant-ui logo assistant-ui
What it doesAI chess coach backed by Stockfish Open-source React components and runtimes for building AI chat
StageNot given Not given
FoundedNot given Not given
Based inDE US
Pricing modelFreemium Open source
PricingFree: no card needed. Plus: 14€/month or 139€/year (save 17%). Pro: 39€/month or 399€/year (save 15%). The core library is free and MIT licensed. assistant-cloud offers: Free ($0, 200 MAU included), Pro ($50/mo, 500 MAU included plus $0.10 per additional MAU), Enterprise (custom MAU pricing, contact for details).
Key features
  • Explain chess positions in plain language
  • Three coaching prompts: Coach, Trainer, and Beginner
  • Import games from lichess.org and chess.com
  • Create and share custom coaching prompts
  • Free AI models available
  • Paid AI models (DeepSeek, OpenAI gpt-6-luna)
  • Full Stockfish on server with paid plans
  • Visualize moves on interactive chess board
  • Streaming support for real-time chat output
  • Tool execution and integration
  • Thread persistence and history
  • Voice support
  • Generative UI rendering
  • Message attachments
  • Conversation branching
  • Multi-platform support (React, Vue, React Native, Ink)
  • Runtime adapter support (AI SDK, LangGraph, LangChain)
  • Fully customizable component composition
What makes it different
  • Explains why moves work, not just what to play
  • Answers appear on the board for visual learning
  • Personalized coaching prompts for different skill levels
  • Free tier includes Stockfish analysis
  • Works with any backend through pluggable runtime adapters
  • Complete source code available for customization via CLI
  • Production-ready runtime handling streaming, tools, and state
  • Free MIT license with optional paid cloud persistence
  • Cross-platform support with single chat model
Free planNot given Not given
Open sourceNot given Not given
PlatformsNot given Not given
Public APINot given Not given
Community votes00
DR (Domain Rating by Ahrefs)1 −1 (down) since last check53 +1 (up) since last check
Trust Flow (Majestic)1212
Citation Flow (Majestic)2139
Referring domains (Majestic)1572

6 details filled in for both companies.

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