Continuously updated · AI Dictionary
The language of AI,
clearly defined.
A field guide to the words changing how we build, work and think—from token and transformer to AI agents and vibe coding.
568 terms
10 topics
1847–2026 timeline
Built as a living reference
Clear words. Useful context.
01
Plain English firstThe definition comes before the jargon.
02
Usage over hypeEstablished meanings are separated from new or informal ones.
03
Show the trailSources appear on entries as they are reviewed.
Latest update · November 2026
New in the AI Dictionary
Fresh language for the newest shifts in AI, explained without the jargon.
agentic web
an emerging form of the Web in which AI agents interact with websites, online services, and other agents on behalf of people, requiring infrastructure for identity, delegation, permissions, transactions, transparency, and user control
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persistent prompt injection
a prompt-injection attack whose malicious instruction is saved in an AI agent's memory, configuration, skills, retrieval store, or other persistent state and influences later tasks after the original content or session is gone
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audio intelligence
the ability of an AI system to perceive, separate, identify, transcribe, reason about, enhance, or generate sound, including speech, music, and environmental audio
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large behavior model
a large, general-purpose model trained across many robot demonstrations or action trajectories to generate behavior for multiple physical tasks rather than controlling only one narrowly programmed skill
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