Understand AI. Apply it in practice.
One system for building a solid AI foundation, finding a concrete use case, and seeing how similar solutions already work in the real world.
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- AI cases
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- Concepts
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One site — three clear paths
What do you want to do?
I want to understand
Learn AI systematically
A dependency map takes you from foundations to RAG, agents, evaluation, and production without random jumps between topics.
I want an outcome
Find where to apply AI
AI² turns “what can AI do?” into concrete scenarios for business, individuals, and government, with value, complexity, and risk assessment.
I want real examples
Explore real AI cases
We break down the task, workflow, automation, metrics, constraints, and repeatability instead of repeating marketing claims.
Latest publications
New materials
Codex subscription vs API: choosing access, billing, and automation
A practical comparison of Codex through a ChatGPT plan versus your own OpenAI API key across billing, identity, limits, local and cloud tasks, CI, governance, observability, and migration.
Read →Claude Code subscription vs API: choosing access and billing
A practical comparison of Claude Code through Pro, Max, Team, or Enterprise and token-based access through Anthropic Console or a cloud provider across billing, identity, limits, automation, observability, and exit readiness.
Read →Microsoft Copilot Free vs Personal vs Family vs Premium
A practical comparison of Microsoft Copilot Free and Microsoft 365 Personal, Family, and Premium across chat, Office apps, grounding, AI credits, agents, privacy, account boundaries, and total cost.
Read →Perplexity Free vs Pro vs Max: what to choose
A practical comparison of personal Perplexity plans across search, Research, models, files, Comet, Computer, privacy, limits, credits, and total cost.
Read →ChatGPT Free vs Go vs Plus vs Pro: what to choose
A practical comparison of personal ChatGPT plans across limits, models, files, research, coding, voice, creation, privacy, and total cost.
Read →ChatGPT Plus vs Claude Pro vs Google AI Pro: what to choose
A practical comparison of personal AI subscriptions across workflows, limits, research, coding, ecosystems, privacy, total cost, and switching rules.
Read →Knowledge map
Start of the route
The learning route is available in Ukrainian; localized nodes are undergoing editorial review.
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