Category API

Learn how to use the DALL-E API and OpenAI Image API for programmatic image generation, edits, pricing, model choice, and production workflows.

Find your OpenAI API key in the OpenAI Platform, create a new secret key, store it safely, and know when to use project, service account, or admin keys.

Learn how function calling works in the OpenAI API, how to define tools, return tool outputs, use strict schemas, and ship safer production integrations.

Learn how to use the Sora API for programmatic video generation, including models, pricing, endpoints, prompts, polling, webhooks, and guardrails.

Learn how to get an OpenAI API key step by step, set up billing, choose permissions, store the key safely, and test your first API request.

Learn how the OpenAI Vision API works with image inputs, Responses API examples, pricing, detail settings, limits, and production patterns.

Learn how the OpenAI Batch API cuts eligible API costs by 50%, when to use it, what limits apply, and how to structure JSONL batch jobs safely.

Learn how the OpenAI Moderation API works, what it checks, which model to use, and how free pricing and rate limits apply in production apps.

OpenAI API pricing guide for March 10, 2026: model-by-model token costs, Batch discounts, cached input pricing, tools, embeddings, audio, and tips.

Learn how to start with the GPT-5 API, choose a model, run your first request, control reasoning, estimate cost, and prepare for production.

ChatGPT Plus does not include OpenAI API access. Learn how Plus billing differs from API billing, how to get an API key, and when each option makes sense.

OpenAI API beginner guide for 2026 covering keys, Responses API, models, pricing, limits, tools, embeddings, audio, images, video, and production.