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Use this when you know the topic you need: Claude Code, MCP, evals, RAG, agents, product, coding, prompting, foundations, or model internals.
Watch first when you want a fast feel for the topic before opening courses, docs, or profiles.
OpenAI model docs and Cookbook · Beginner to advanced
Official model and implementation material for learning current GPT-5.5, GPT-5.5 Pro, and GPT-5.4 tradeoffs, Codex workflows, agent evals, MCP and connector patterns, retrieval, model optimization, and structured outputs.
Topics
GPT models, Reasoning models, Model selection, Agents, RAG, Structured outputs, MCP, Evals
Model docs · OpenAI · Beginner to advanced
You need to choose between GPT-5.5, GPT-5.5 Pro, GPT-5.4 mini, GPT-5.4 nano, reasoning levels, tool support, and cost-sensitive API paths.
openai, gpt, gpt-5, reasoning models, model selection
Guide · OpenAI · Intermediate
You need the current OpenAI guidance for migrating to GPT-5.5, prompt shape changes, and tool-heavy workflow behavior.
openai, gpt-5.5, coding, reasoning, tool use
Guide · OpenAI · Intermediate
You want the official prompting adjustments for GPT-5.5 instead of reusing older GPT-4 or GPT-5 prompt habits unchanged.
openai, gpt-5.5, prompting, reasoning, tool use