GPT-6 Sol and Luna
Choose between two models optimized for professional work, coding, and using tools. They improve speed and significantly reduce costs compared to the previous generation
Best for
Choose between two models optimized for professional work, coding, and using tools. They improve speed and significantly reduce costs compared to the previous generation » Learn more: ChatGPT Perplexity Verified Tool Freemium 207352 Similar AI Tools Claude Opus 5.5 GPT-6 Astra Claude Fable 5.1
About GPT-6 Sol and Luna
Choose between two models optimized for professional work, coding, and using tools. They improve speed and significantly reduce costs compared to the previous generation
Alternatives
Claude Opus 5.5
An AI model built for code and autonomous agents. It features a context window of one million tokens and enables detailed analysis of documents, charts, and screenshots. It is 40% less expensive than its predecessor (Opus 5)
An AI model built for code and autonomous agents. It features a context window of one million tokens and enables detailed analysis of documents, charts, and screenshots. It is 40% less expensive than its predecessor (Opus 5) » Learn more: ChatGPT Perplexity Tool of the Week Sep 21 – 27, 2026 Verified Tool Freemium 220257 Similar AI Tools GPT-6 Astra Claude Fable 5.1 GPT‑6.1 Sol
GPT-6 Astra
The OpenAI model capable of operating a computer like a human: filling out forms, managing a CRM, coding, analyzing scientific data, or conducting research. With a context of 1 million tokens
The OpenAI model capable of operating a computer like a human: filling out forms, managing a CRM, coding, analyzing scientific data, or conducting research. With a context of 1 million tokens » Learn more: ChatGPT Perplexity Tool of the Week Aug 25 – 31, 2026 Verified Tool Freemium 218548 Similar AI Tools Claude Fable 5.1 Claude Fable 5 Grok 4.6
Claude Fable 5.1
Anthropic's LLM model for coding, research, and long, complex tasks. With improved performance and reduced costs on agent-based workloads. It also produces far fewer false security alerts
Anthropic's LLM model for coding, research, and long, complex tasks. With improved performance and reduced costs on agent-based workloads. It also produces far fewer false security alerts » Learn more: ChatGPT Perplexity Verified Tool Paid 211777 Similar AI Tools GPT-6 Astra Claude Fable 5 Grok 4.6