Start building with GPT-5
GPTâ5 is OpenAIâs most advanced model to date, with meaningful improvements in reasoning, reliability, and adaptability, and standout capabilities for coding and builder workflows. Whether youâre refactoring a large codebase, integrating AI into your app, or orchestrating multiâtool workflows, GPTâ5 provides advanced coding assistance and precise tool use.
Why it matters for builders
- Coding performance: Strong results on benchmarks such as SWEâbench Verified.
- Tool integration: Supports freeâform function calling, structured outputs, and toolâcall preambles for smoother workflows.
- Flexible reasoning modes: Use minimal reasoning for speed and deeper reasoning when tasks require more analysis.
- Large context window: Work across bigger inputs and longer interactions.
Core resources
- ďťżGPT-5 Tools & Parameters Cookbook: Practical guide to using GPT-5âs free-form function calling, verbosity controls, and other advanced API parameters for coding.
- ďťżGPT-5 Prompting Guide: Best practices and examples for writing prompts that maximize GPT-5âs coding and reasoning capabilities.
Get started today
With GPTâ5âs advanced coding capabilities, you can move from concept to production faster than ever. Dive into the Tools & Parameters Cookbook, Prompting Guide, and Frontend Coding Cookbook to start building smarter, more efficient workflows, whether youâre tackling quick code fixes or architecting complex, multiâstep solutions.
