About OpenAI API Platform
The OpenAI API Platform is OpenAI's developer service for adding its language and multimodal models to other software. Developers send requests over an API and receive generated text, image understanding or audio results from models such as GPT.
The vendor's homepage could not be read for this entry, so the description relies on its stated purpose and widely known characteristics. The platform is a hosted service that runs on OpenAI's infrastructure, which means there is nothing to install, and access is controlled through accounts and API keys.
It is a proprietary commercial product, and usage is billed by OpenAI under its published API pricing. Teams comparing providers should check the vendor's documentation for current models, limits and rates.
Key features
- Hosted access to GPT language models
- Text generation through a simple API
- Vision and image understanding inputs
- Audio input and output capabilities
- Account-based API key access
Good fit for
- →Adding chat or text generation to an app
- →Prototyping features on hosted language models
- Tags
- llm-api
- gpt
- generative-ai
- api
- multimodal
- openai
- ai-infrastructure
OpenAI API Platform: questions and answers
- What is OpenAI API Platform used for?
- OpenAI API Platform is a developer platform for calling OpenAI models such as GPT for text, vision and audio tasks from your own applications. It is a good fit for adding chat or text generation to an app and prototyping features on hosted language models.
- How much does OpenAI API Platform cost?
- OpenAI API Platform is a paid product with no free plan.
- Is OpenAI API Platform open source?
- No. OpenAI API Platform is proprietary (closed-source) software and can't be self-hosted. Open-source alternatives to OpenAI API Platform include SGLang, Ollama and llama.cpp.
- What are some alternatives to OpenAI API Platform?
- OpenAI API Platform competes with Google Vertex AI, Amazon Bedrock and Cohere. For open-source options, see Enlisted's ranked list of open-source OpenAI API Platform alternatives.
Open-source alternatives to OpenAI API Platform
See all
SGLang
AI Infrastructure
SGLang is a high-performance serving framework for large language models and multimodal mo
Apache-2.0vs Amazon Bedrock★ 37k
Ollama
AI Infrastructure
Get up and running with Kimi, GLM, MiniMax, DeepSeek, gpt-oss, Qwen, Gemma and other model
MITvs ChatGPT★ 182k
llama.cpp
AI Infrastructure
LLM inference in C/C++
MITvs OpenAI API Platform★ 130k
vLLM
AI Infrastructure
A high-throughput and memory-efficient inference and serving engine for LLMs
Apache-2.0vs Amazon Bedrock★ 93k
LocalAI
AI Infrastructure
LocalAI is the open-source AI engine. Run any model - LLMs, vision, voice, image, video -
MITvs ChatGPT★ 49k
llamafile
AI Infrastructure
Distribute and run LLMs with a single file.
OSSvs ChatGPT★ 26k
SaaS alternatives to OpenAI API Platform
See all
Google Vertex AI
AI Infrastructure
Google Cloud platform for building, tuning and deploying machine learning and generative AI models
SaaS
Amazon Bedrock
AI Infrastructure
Managed AWS service for building generative AI apps with models from several providers
SaaS
Cohere
AI Infrastructure
Enterprise AI platform offering language models, embeddings and retrieval for businesses
SaaS
Mistral AI
AI Infrastructure
AI company offering open-weight and commercial language models via API and Le Chat
SaaS
xAI API
AI Infrastructure
Developer API for accessing Grok models from xAI
SaaS
Google AI Studio
AI Infrastructure
Web tool and API for prototyping with Gemini models
SaaS

