OpenAI API vs OPT

OpenAI API

Access GPT-4, DALL-E, and Whisper via a simple REST API

The OpenAI API provides programmatic access to OpenAI's suite of models including GPT-4o, GPT-4, Whisper for speech-to-text, DALL-E for image generation, and embeddings models. Developers can integrate natural language understanding, content generation, and multimodal capabilities into any application. It offers pay-per-token pricing with extensive documentation and SDKs for Python and Node.js.

OPT

Meta's open pretrained transformer language models for researchers

OPT (Open Pretrained Transformers) is a suite of open-source large language models from Meta AI, ranging from 125M to 175B parameters, designed as a reproducible and accessible alternative to GPT-3. The models are available on Hugging Face for research purposes and are trained on publicly available datasets. OPT aims to enable the broader research community to study large language model behavior and limitations.