ChatGPT vs ...

Getting the Right Answer from ChatGPT – O’Reilly

What Are ChatGPT and Its Friends? – O’Reilly

GPT-3.5 is one of a class of language models that are sometimes called “large language models” (LLMs)

• ChatGPT itself
  Developed by OpenAI; based on GPT-3.5 with specialized training. An API for ChatGPT is available.
  
• GPT-2, 3, 3.5, and 4
  Large language models developed by OpenAI. GPT-2 is open source. GPT-3 and GPT-4 are not open source, but are available for free and paid access. The user interface for GPT-4 is similar to ChatGPT.
  
• Sydney
  The internal code name of the chatbot behind Microsoft’s improved search engine, Bing. Sydney is based on GPT-4,¹ with additional training.
  
• Kosmos-1
  Developed by Microsoft, and trained on image content in addition to text. Microsoft plans to release this model to developers, though they haven’t yet.
  
• LaMDA
  Developed by Google; few people have access to it, though its capabilities appear to be very similar to ChatGPT. Notorious for having led one Google employee to believe that it was sentient.
  
• PaLM
  Also developed by Google. With three times as many parameters as LaMDA, it appears to be very powerful. PaLM-E, a variant, is a multimodal model that can work with images; it has been used to control robots. Google has announced an API for PaLM, but at this point, there is only a waiting list.
  
• Chinchilla
  Also developed by Google. While it is still very large, it is significantly smaller than models like GPT-3 while offering similar performance.
  
• Bard
  Google’s code name for its chat-oriented search engine, based on their LaMDA model, and only demoed once in public. A waiting list to try Bard was recently opened.
  
• Claude
  Developed by Anthropic, a Google-funded startup. Poe is a chat app based on Claude, and available through Quora; there is a waiting list for access to the Claude API.
  
• LLaMA
  Developed by Facebook/Meta, and available to researchers by application. Facebook released a previous model, OPT-175B, to the open source community. The LLaMA source code has been ported to C++, and a small version of the model itself (7B) has been leaked to the public, yielding a model that can run on laptops.
  
• BLOOM
  An open source model developed by the BigScience workshop.
  
• Stable Diffusion
  An open source model developed by Stability AI for generating images from text. A large language model “understands” the prompt and controls a diffusion model that generates the image. Although Stable Diffusion generates images rather than text, it’s what alerted the public to the ability of AI to process human language.