Source desk
Sources and Methods
The tools keep citations compact. This desk records the primary reading, the teaching boundary, and the methodology route.01
Learn AI
Product features, free limits, and subscription prices change. This set favors the official help, documentation, pricing, and license pages behind the practical guide; examples were reviewed August 28, 2026.
- ChatGPT consumer plansOpenAI
- Apps in ChatGPTOpenAI Help Center
- Claude Pro monthly priceAnthropic Help Center
- Claude connectors and MCPAnthropic Help Center
- Google AI consumer plansGoogle One
- Gemini connected appsGoogle Gemini Help
- NotebookLM source groundingGoogle NotebookLM Help
- Grok overviewxAI
- Grok consumer plansxAI
- Get started with LlamaMeta
- Understand Copilot connectorsMicrosoft Support
- Microsoft 365 Copilot consumer plansMicrosoft
- What is GitHub Copilot?GitHub Docs
- What is Perplexity?Perplexity Help Center
- Perplexity consumer plan comparisonPerplexity Help Center
- OpenCode beginner guideOpenCode
- OpenCode Zen model catalog and pricingOpenCode
- Open Source AI DefinitionOpen Source Initiative
- Model cardsHugging Face Docs
- Repository license metadataHugging Face Docs
- LM Studio app and local serverLM Studio Docs
- Download and run models locallyOllama
02
Site methods
Data-heavy tools retain claim-level sources where a reader needs them. These links jump to each tool’s own method and limitations.