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.
390 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.
agent sandbox
an isolated, policy-controlled computing environment in which an AI agent can run commands, use tools, manipulate files, and access selected network resources without receiving unrestricted access to the host system
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AI-ready data
data that has been prepared, documented, governed, and made accessible in forms that an AI system can reliably use for training, retrieval, evaluation, or automated decisions
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x402
an open payment protocol that uses the HTTP 402 Payment Required status code to let software clients, especially AI agents, automatically pay for APIs, data, content, or computing services as part of a web request
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agent sprawl
the uncontrolled proliferation of AI agents across an organization faster than the organization can inventory, govern, secure, maintain, or retire them
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