Large language model API for advanced reasoning, coding, and conversation.
GPT-5.1 is a flagship foundation model from OpenAI exposed through a simple HTTP API and SDKs. It can read and generate text, reason over long contexts, call tools, and power multi-step agents, making it a strong core for chatbots, copilots, and workflow automation. Developers configure model behavior via system prompts, safety settings, and function schemas, and then integrate it into backends, websites, and products as a hosted service. **Key Features:** • High-capability text and code generation • Extended context windows for complex tasks • Function calling and tool integration for agents • Fine-grained controls for safety and style • SDKs and docs for rapid integration
