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Plain-language AI glossary

Term 17ModelsMeaning / context / connections

Models / Definition

GPT

OpenAI's family of generative pre-trained transformer models for language, reasoning, coding, vision, and tool-using applications.

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01

MeaningThe one-sentence definition.

02

ContextHow the idea works in practice.

03

UsesWhere the concept becomes useful.

01 / Plain-language context

How GPT works.

GPT stands for Generative Pre-trained Transformer. OpenAI currently presents GPT-5.6 Sol for complex reasoning and coding, GPT-5.6 Terra for a balance of capability and cost, and GPT-5.6 Luna for cost-sensitive, high-volume work. The current family is available through the Responses API and supports text and image input, multilingual work, vision, and tools.

The useful decision is not which label sounds most advanced. It is which model clears the quality bar for the job at an acceptable cost and latency. Build a small evaluation set from real inputs, start with the least expensive model that can pass it, and route only the harder cases to a stronger tier.

Model names, limits, tools, and pricing change. Check the official model catalog before making a production decision.

02 / Practical uses

Where it helps.

  1. 01Chat applications and assistants
  2. 02Content generation and summarization
  3. 03Code generation and debugging
  4. 04Data extraction and classification
  5. 05Multi-step reasoning tasks
03 / Keep exploring
Large Language Model (LLM)A neural network trained on massive text datasets that can generate, understand, and reason about human language.TransformerThe neural network architecture behind all modern LLMs, using self-attention mechanisms to process sequences in parallel.ClaudeAnthropic's family of AI models known for long context windows, strong reasoning, and instruction-following capabilities.GeminiGoogle's multimodal AI model family optimized for text, image, audio, and video understanding and generation.