# LLM. Large language model

> Large language model: the software behind ChatGPT, Claude, Gemini and the rest, trained on a very large body of text to produce fluent language in response to a prompt.

Source: https://barkingcat.ai/terms-of-trade/llm/

## Terms of Trade · Edition 4: The AI pitch, and Barking Cat’s own terms

Definition

Large language model: the software behind ChatGPT, Claude, Gemini and the rest, trained on a very large body of text to produce fluent language in response to a prompt. In a retailer it now writes product copy, email, imagery briefs and customer service replies, and it is one of the kinds of software that agentic commerce, GEO and llms.txt are intended to help understand the offer.

Field note

Chatty Pete and friends now run your marketing department.

Board question

What share of last quarter’s copy, imagery and email came out of a model, who checked it before it went to a customer, and what did the team do with the time it saved?

Applied through

The Creation lens of [the AI Diagnostic](https://barkingcat.ai/the-barking-cat-ai-diagnostic/)’s three-lens walk (content, imagery, copy and studio pipeline); the People and Capability foundation, because the question is never whether the model can write, it is whether anyone is still reading.

Related terms
- [Chatbot](https://barkingcat.ai/terms-of-trade/chatbot/)
- [Personalisation](https://barkingcat.ai/terms-of-trade/personalisation/)
- [Copy and Voice](https://barkingcat.ai/thinking/commercial-experience-index-edition-two/)
- [GEO](https://barkingcat.ai/terms-of-trade/geo/)

## Contact

steve@barkingcat.ai

Barking Cat Advisory Limited. Registered in England and Wales, company number 17338003.