What is OpenAI API?
Developer platform for OpenAI's models — text, reasoning, images, speech, realtime voice and agents — billed per token.
OpenAI API is listed in the Code & Dev category of ZORGO AI's AI tools directory, where it ranks #8 of 117 AI coding tools.
OpenAI API key features
- GPT & reasoning models
- Responses & Agents SDK
- Realtime voice
- Fine-tuning
What can you use OpenAI API for?
- AI features in apps
- Chatbots
- Agents
- Content pipelines
OpenAI API pricing
OpenAI API uses pay-per-use pricing — you only pay for what you use.
Prices change often — always confirm the latest plans on the official OpenAI API website.
Best OpenAI API alternatives
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1
PyTorchFree
The deep-learning framework of AI research
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2
Claude CodePaid
Anthropic's agentic coding tool
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3
CursorFreemium
AI-first code editor
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4
GitHub CopilotPaid
AI pair programmer in your IDE
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5
TensorFlowFree
Google's open-source ML framework
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6
LovableFreemium
Build full-stack apps by chatting
OpenAI API FAQ
Is OpenAI API free?
Not exactly. OpenAI API uses pay-per-use pricing — you only pay for what you use.
What is OpenAI API used for?
People mainly use OpenAI API for AI features in apps, chatbots, agents and content pipelines. Developer platform for OpenAI's models — text, reasoning, images, speech, realtime voice and agents — billed per token.
What are the best OpenAI API alternatives?
Popular OpenAI API alternatives include PyTorch, Claude Code and Cursor. See all 117 AI coding tools ranked on our Best AI Coding Tools (2027) list.