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The GPT-6 family is OpenAI's most capable model line, built for deep reasoning, complex coding tasks and long-form research. ai-chat.pro is an independent workspace powered by GPT-6.1 Sol, GPT-5.6 Terra and GPT-6 Luna through OpenAI's official API - one subscription instead of several.
Combine GPT-5 with web search for up-to-date answers, or run Deep Research to get a long, cited report on any topic.
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Yes - the GPT-6 model family (including GPT-6.1 Sol) is served through OpenAI's official API on every paid plan, alongside Anthropic's Claude.
GPT-5 class models excel at multi-step reasoning: hard coding problems, math, structured analysis, and long documents. For quick simple prompts a GPT-4-class model is often faster.
Yes. The trial costs just $1 and gives you access to the model catalog so you can compare GPT-5 with other models before committing to a plan.