smart_toyContent Hub · Language Models

Language Models (LLM)

The central guide — everything you need to choose, use and build with language models: a guide to each model, comparisons, pricing, free local running, and Prompt Engineering.

A language model (LLM) is the engine behind the AI tools you know — ChatGPT, Claude, Gemini and others. They write, analyze, code and summarize in many languages. This page gathers all the content that will help you choose the right model, understand the costs, and even run a model for free on your own machine.

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A guide to each model

A full guide to each of the leading models — capabilities, tips and uses.

arrow_backChatGPT (GPT-5.6) arrow_backClaude (Opus 4.8) arrow_backGemini 3 arrow_backGrok arrow_backPerplexity

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Compare, price & choose

Which model fits you, and how much it costs — including saving tips.

arrow_backChatGPT vs Claude vs Gemini arrow_backLLM pricing 2026 arrow_backCutting LLM costs arrow_backDeepSeek — a cost-efficient model

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Local & free

Don't want to pay? Run a language model on your machine, fully private.

arrow_backLocal models — comparison arrow_backDeepSeek for local running arrow_backHugging Face — open models arrow_backFine-tuning — custom training

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Prompting & building (API)

How to write better prompts and build products on top of language models.

arrow_backPrompt Engineering arrow_backReady-made prompt library arrow_backClaude API arrow_backClaude for beginners

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Not sure which model to start with?

Read the comparison, or dive straight into the guide for the model that speaks to you — all in one place, free.

compare_arrowsTo the full comparison descriptionAll guides