AI tools glossary

AI hallucination

A confident but false or unsupported answer produced by an AI system.

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Practical evaluation note

For decisions, require sources, official docs, screenshots, logs, or human verification.

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General AI Assistant · Free + paid plans

ChatGPT

A flexible AI assistant for drafting, analysis, brainstorming, coding help, and everyday knowledge work.

Best for: General-purpose writing, research, analysis, and multimodal help

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Perplexity

A research-first AI search engine that keeps sources visible while answering questions.

Best for: Source-backed web research and quick market scans

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You.com

An AI search and assistant platform for web answers, research, productivity, and agent-style tasks.

Best for: AI search, research agents, and productivity-oriented web answers

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Claude

A thoughtful assistant especially useful for editing, long-context analysis, and turning messy notes into structured outputs.

Best for: Long-form writing, careful analysis, document review, and coding assistance

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