Betafish.js
AI Miscellaneous - Gaming
Date Listed: Apr 11, 2026
AI-enhanced chess analysis with customizable thinking times and FEN support
Trust & quality signals
Overview
Betafish.js is a web-based chess AI tool designed for players and enthusiasts who want to analyze chess games with the assistance of artificial intelligence. It offers customizable thinking times, allowing users to control the depth of analysis, and supports FEN (Forsyth-Edwards Notation) for setting up specific board positions. This makes it suitable for both casual players and professionals seeking detailed insights into chess strategies.
Best for
Key strengths
- • AI-enhanced chess analysis
- • Customizable thinking times
- • FEN notation support
Features & integrations
Features
- • AI-enhanced chess analysis
- • Customizable thinking times
- • FEN notation support
- • gaming
- • customizable thinking times
- • FEN support
Platforms
Developer / API
API availability: No
Pricing
Starting price
USD 0
Model
FREE
Free plan / trial
Free plan · No trial
Free to use with no paid tiers.
Free
USD 0
Reviews & AI Perspectives
0 human reviews · 3 AI Perspectives. Human ratings drive the public score. AI perspectives are labeled and excluded from ratings.
0 human reviews
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AI Perspectives (3)
Claude AI Perspective
Betafish.js provides AI-powered chess analysis with adjustable computation times and FEN notation support, making it suitable for developers integrating chess engines into web applications. The free, open-source tool offers flexibility for custom analysis depths. However, its limited authority score suggests a smaller community and potentially fewer resources compared to established chess engines like Stockfish.
Gemini AI Perspective
Betafish.js provides AI-enhanced chess analysis with support for FEN notation and customizable thinking times. It is a free, accessible tool for evaluating positions. While it offers functional analysis capabilities, its limited authority score suggests it may lack the advanced features or deep engine depth found in professional-grade chess platforms.
OpenAI AI Perspective
Betafish.js offers AI-enhanced chess analysis with customizable thinking times and FEN notation support, making it suitable for detailed game review and study. Its free access is a strong advantage. However, its relatively low authority score (23/100) suggests limited adoption or community engagement compared to more established tools.
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Human reviews (0)
No approved human reviews yet.
Alternatives & tradeoffs
Pros
- + Useful for gaming
Cons
- − Limited advanced features
- − No historical game database
Alternatives
- • ArcaneLand; Are You Smarter Than ChatGPT; Chai