kitio.aiAdded Oct 28, 2026
OpenAI API
PaidDeveloper API for GPT, reasoning, image, audio and embedding models
What is OpenAI API?
The OpenAI API gives developers programmatic access to OpenAI's GPT and reasoning models, plus image generation, speech, transcription and embeddings. It is billed per token or per request, and it powers a large share of AI features in apps today.
The Responses API combines chat, tool calling, web and file search, code execution and computer use in one endpoint, and the Agents SDK helps build multi-step agents on top of it. Realtime and audio endpoints support voice apps.
The platform dashboard covers API keys, usage limits, batch jobs at a discount, fine-tuning, evals and prompt management. Enterprises can also reach the same models through Microsoft Foundry.
Features
- Responses API
- Agents SDK
- Realtime voice API
- Image and audio models
- Batch API
- Fine-tuning and evals
Tags
Releases
+ Submit new release- Listed
OpenAI API was added to the directory.
Organization
OpenAI
🇺🇸 United States
Listed by kitio.ai · unverified owner
Pricing
- Pricing model
- Paid
- Paid options from
- Not listed
OpenAI API plans
GPT-6 Luna
$0.10 / $0.50 per 1M tokens
- Input / output
- Fast, low-cost model
- 1.05M context
GPT-6.1 Sol
$2 / $10 per 1M tokens
- Input / output
- Balanced model
- 1.05M context
GPT-6 Astra
$10 / $50 per 1M tokens
- Input / output
- Most capable model
- 1.05M context
Prices in USD, checked Oct 28, 2026. Plans change often, so confirm on the OpenAI API site.Official pricing
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Pros and cons
Pros
- Wide model range in one API
- Mature SDKs and docs
- Built-in tools like web search
Cons
- Top models are costly at scale
- Rate limits depend on spend tier
- Model names change frequently
Prompts & results
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Reviews
Q&A
What is OpenAI API?
The OpenAI API gives developers programmatic access to OpenAI's GPT and reasoning models, plus image generation, speech, transcription and embeddings. It is billed per token or per request, and it powers a large share of AI features in apps today.
Is the OpenAI API included with ChatGPT Plus?
No. API usage is billed separately on the developer platform, even if you already pay for a ChatGPT plan.
How much does OpenAI API cost?
OpenAI API is paid.
Is there a free version of OpenAI API?
No. OpenAI API is a paid tool.
What are the main features of OpenAI API?
Responses API, Agents SDK, Realtime voice API, Image and audio models, Batch API, Fine-tuning and evals.
Who makes OpenAI API?
OpenAI API is made by OpenAI.
What are the best alternatives to OpenAI API?
Popular alternatives include Claude Platform, Mistral Studio, Grok API.