ChatGPT

OpenAI. Frontier LLMs & Reasoning.

OpenAI’s conversational product. As of the November 10, 2026 ChatGPT release notes, Plus, Pro, Business, and Enterprise use GPT-6 Sol, Free and Go use GPT-6 Luna, and the Pro reasoning option uses GPT-6 Astra. GPT-4o and o1 are not the current models. Source: https://help.openai.com/en/articles/6825453-chatgpt-release-notes

Best for: Drafting, research, and voice conversations in ChatGPT.