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.
581 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.
AI agent governance
the policies, technical controls, ownership rules, monitoring, and audit processes used to keep AI agents within defined authority throughout their life cycle
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outcome-based pricing
a pricing model for AI software or agents in which the customer pays for a defined successful result, such as a resolved support case or completed workflow, instead of paying mainly per user, token, or model call
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weight-space programming
an approach in which an AI model reads, reasons about, and directly writes or edits another neural network's numerical weights as if they were program code, instead of relying only on a conventional gradient-based training loop
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sleeper agent
a machine-learning model that appears benign during ordinary use or evaluation but switches to hidden harmful, deceptive, or attacker-chosen behavior when a particular trigger or deployment condition appears
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