How deeply does AI for Everyday IT cover GPT-4?

Defines GPT as a generative language model and shows workplace uses, but avoids model internals and formal theory.

GPT-4

GPT is OpenAI's family of generative pre-trained transformer language models.

GPT-4 is a generative pretrained transformer language model from OpenAI. It learns patterns from existing data and generates new text, including technical documentation and creative writing. section 3.4.1 section 1.4

In IT support, GPT models can learn product documentation quickly, helping teams solve problems faster, onboard new technicians, and improve customer service. Treat generated answers as assistance, not automatic fact. section 8.2

Support-documentation workflow

Give a GPT model the relevant product documentation and ask it to summarize troubleshooting steps or draft a customer response. Check the result against the source material before sending it. section 8.2

Table 3.2 ChatGPT account comparison (2025)

Feature/Capability	Free account	Plus account (premium)
Messages and interactions	Unlimited, subject to rate limits	Unlimited, with higher rate limits
Chat history	Unlimited	Unlimited
GPT-4o access	Limited access	Full access with advanced capabilities
Advanced reasoning model	Not available	Available (access to o3 and o4 models)
Response speed	Standard, may vary during peak times	Faster, with priority processing
Context capacity	8,000 tokens	Up to 32,000 tokens
Custom GPT creation	Limited	Full access to create, customize, and share GPTs
Image generation	Not available	Available (powered by GPT-4o)
Web browsing	Limited	Full, real-time browsing access
Vision	Limited	Full access for analyzing images and visual data
Voice conversations	Limited	Full access with advanced voice features
Data analysis tools	Limited	Full access to advanced data analysis capabilities
Team collaboration tools	Not available	Available (via ChatGPT Team/Enterprise plans)
Enhanced privacy controls	Standard	Advanced data privacy features with priority support

Compare account access, context capacity, speed, and GPT-4o availability across free and Plus ChatGPT plans. section 3.4.1

How AI for Everyday IT covers it

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Also explained in

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Introduction to Generative AI, Second EditionGPT-4 is an OpenAI GPT language model released in 2023 and capable of performing a range of language and coding tasks.
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Data Analysis with LLMsGPT-4 is a GPT language model version capable of generating and understanding text, including complex code.
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Elasticsearch in Action, Second EditionGPT-4 is a generative pretrained transformer language model developed by OpenAI.
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The AI Pocket BookAn OpenAI large language model used as an example tokenizer and reference for token counts.

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Related concepts

multimodalkind of · A multimodal model is a model that processes, generates, or relates information represented in two or more data modalities, such as text, images, audio, or video.
ChatGPTused by · ChatGPT is OpenAI’s conversational AI service, which lets users interact with generative AI models and related tools through natural-language prompts.
autoregressive modelkind of · An autoregressive model represents or predicts each value in a sequence based on preceding values in that sequence.
language modelkind of · A language model is a computational model that represents patterns in linguistic tokens to estimate sequence probabilities and predict or generate language from context.
GPT modelcontrasts with · A GPT model is a generative pretrained Transformer language model that produces text autoregressively by predicting successive tokens from preceding context.

This explainer was generated by Manning's knowledge graph from the text of AI for Everyday IT. The section links point to the parts of the book it draws on.