OpenAI has developed several powerful language models, including GPT-3 and GPT-4. GPT-3, or Generative Pre-trained Transformer 3, is a deep learning-based language prediction model, known for its ability to generate human-like text based on a prompt. On the other hand, GPT-4 is a large multimodal model that can accept both image and text inputs and produce text outputs. It exhibits human-level performance on various professional and academic benchmarks. OpenAI has also been working on methods to evaluate and benchmark the performance of models like GPT-4.
The GPT 3.5 turbo and GPT-4 turbo models are the latest version of GPT-3 and GPT-4. These models are faster with larger context windows than their predecessors.