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.
474 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 · October 2026
New in the AI Dictionary
Fresh language for the newest shifts in AI, explained without the jargon.
AI accountability gap
the difficulty of identifying, tracing, and enforcing who is responsible when an AI system or agent makes a consequential decision or takes an action across several people, providers, tools, and levels of delegation
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agenticness
the degree to which an AI system behaves like an agent by pursuing goals, acting through tools or an environment, adapting its plan, maintaining activity over time, and operating with limited direct supervision
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model autonomy
the capability of an AI model or model-based agent to carry out extended sequences of real-world actions, acquire resources, and adapt to obstacles with limited human instruction or intervention
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autonomous replication and adaptation
a cluster of AI capabilities that would let an agent acquire resources, create and maintain copies of itself, and adapt to obstacles or countermeasures with little or no human assistance
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