Model Specific
3 resources
Prompting best practices (Claude docs)
by Anthropic
Current-model guidance in one page: XML structure, examples, thinking, agentic use. (Old use-xml-tags, multishot and extended-thinking-tips URLs redirect here.)
Prompt engineering how-to (Llama docs)
by Meta
Official guide for prompting open-weight Llama models.
GPT-5 prompting guide
by OpenAI
Model-specific advice on agentic eagerness, tool preambles and instruction conflicts.