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
Model docs · OpenAI · Intermediate
You need the Codex-specific guidance on which OpenAI models to use for complex coding, lighter tasks, or subagent workloads.
codex, coding agents, model selection, gpt-5.5, subagents