# OpenAI

- [ChatGPT-4 (OpenAi)](/ai-tools-research/large-language-models-llms/openai/chatgpt-4-openai.md)
- [Is GPT-4 Open Source?](/ai-tools-research/large-language-models-llms/openai/chatgpt-4-openai/is-gpt-4-open-source.md)
- [ChatGPT can now See, Hear, and Speak](/ai-tools-research/large-language-models-llms/openai/chatgpt-4-openai/chatgpt-can-now-see-hear-and-speak.md)
- [ChatGPT-4 Turbo, Custom GPTs and AI Agents](/ai-tools-research/large-language-models-llms/openai/chatgpt-4-turbo-custom-gpts-and-ai-agents.md)