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.
292 terms
10 topics
1847–2026 timeline
Latest update · October 2026
New in the AI Dictionary
Fresh language for the newest shifts in AI, explained without the jargon.
flow matching
a method for training a continuous generative model by teaching it the vector field that moves samples along chosen probability paths from a simple distribution, such as noise, toward the data distribution
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on-policy distillation
a form of model distillation in which the student generates its own outputs or trajectories and learns from teacher feedback on those student-visited states
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discrete diffusion
a diffusion-model approach for categorical or other discrete data that learns to reverse a step-by-step corruption process applied to tokens, labels, graph elements, or similar noncontinuous values
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sparse attention
an attention mechanism that allows each query to attend to only a selected subset of tokens or positions instead of computing every possible pairwise connection
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