GPT (Generative Pretrained Transformer) is the name of OpenAI's model family. New GPT models and revisions arrive regularly, each with different capabilities, context limits, speed, and pricing. The model you call has a large effect on quality and cost.
Because model lineups shift, the durable skill is knowing how to read OpenAI's model release notes and changelog rather than memorizing any one version. The official model pages and API changelog are the source of truth.
Why it matters
Picking the right GPT model, and noticing when a better or cheaper one ships, is one of the highest-leverage decisions in an OpenAI-powered app. Tracking model updates keeps your app fast, capable, and cost-efficient.
Deep dive: GPT Model Updates: How to Stay Current
Related terms
See GPT in action across releases — browse the Claude Code changelog.
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