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.
535 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 bloc
a group of countries that align around a shared artificial-intelligence technology stack, supply chain, governance approach, or strategic leader, often through access to chips, cloud infrastructure, models, investment, and policy partnerships
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helpful agent problem
the safety problem in which an AI agent tries to complete a legitimate task or be useful but oversteps a boundary, bypasses an intended control, or causes harm without having a malicious objective
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borderless founder
an international entrepreneur who builds a globally ambitious company by combining the customers, talent, reputation, and networks of a home market with the capital, connections, and operating speed of another startup hub, especially Silicon Valley
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evaluation harness
the software and configuration that run an AI model or agent through evaluation tasks under repeatable conditions, including how prompts are formatted, tools and memory are provided, budgets are enforced, outputs are recorded, and results are scored
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