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Using GPT-5.5

Provides guidance on migrating to GPT-5.5, including behavioral changes in reasoning effort, prompting strategies for outcome-first execution, and optimizing tool use for complex agentic workflows.

Import to Prompt Buddy

Derived skill

Files assembled from official documentation

Viewing SKILL.md

Using GPT-5.5

Provides guidance on migrating to GPT-5.5, including behavioral changes in reasoning effort, prompting strategies for outcome-first execution, and optimizing tool use for complex agentic workflows.

When To Use

Use when migrating existing prompt stacks to GPT-5.5 or designing new agentic workflows that require tuning reasoning effort, outcome-oriented prompting, or precise tool selection.

Reference Files

FileContainsUse For
SKILL.mdEntry point: scope, routing table, and workflow.Start here.
docs/using-gpt-5-workflow-guide.mdA guide detailing the features, behavioral changes, and migration steps for using the GPT-5.5 model.Questions about a guide detailing the features, behavioral changes, and migration steps for using the GPT-5.5 model.
examples/using-gpt-5-openai-gpt-5-5-migration-command.textA text command demonstrating how to migrate a project to the GPT-5.5 model using the openai-docs tool.Exact payloads, commands, or snippets shown in A text command demonstrating how to migrate a project to the GPT-5.5 model using the openai-docs tool.

What This Skill Covers

  • GPT-5.5 raises the baseline for complex production workflows. It’s a strong fit for coding use cases, tool-heavy agents, grounded assistants, long-context re...
  • Main sections: Introduction, What's new, Behavioral changes, Migration quickstart, Automated migration with Codex.

Workflow

  1. Open the most relevant file under docs/ for the exact documented workflow and wording.
  2. Open schemas/ files for exact structured contracts.
  3. Open examples/ files for concrete requests, commands, snippets, and manifests.
  4. Do not add behavior or configuration that is not present in the attached source files.

Canonical source: https://developers.openai.com/api/docs/guides/latest-model.md