Step 1: Understand ChatGPT.
ChatGPT is an artificial intelligence language model designed for natural language conversations.
Step 2: Identify the developer.
ChatGPT was developed and released by OpenAI, an AI research organization.
Step 3: Analyze other options.
Google and Meta develop AI tools but did not create ChatGPT.
Microsoft partners with OpenAI but is not the original developer.
Step 4: Conclusion.
Hence, ChatGPT was developed by OpenAI.