Overview
OpenAI's newest models, GPT-6 Sol and GPT-6 Luna, are now available in the AI Agent action and the GPT action in Workflows. They replace the GPT-5.6 models, with more accurate outputs, cleaner responses, and pricing that is 50 percent lower.
What changed
GPT-6 sol: the model for complex work. It is built for multi-step agent tasks, business workflows that span multiple apps, and decisions that need careful reasoning. GPT-6 sol makes roughly half as many factual mistakes as GPT-5.6 sol.
GPT-6 Luna: The fast, efficient model for high-volume tasks such as classification, summaries, tagging, and quick replies. At higher effort settings, GPT-6 Luna matches GPT-5.6 Sol on factual accuracy at a fraction of the cost.
Model Selection: Both models appear in the Model dropdown of the AI Agent action and the GPT action.
How to Use
- Add or open an AI Agent action or a GPT action in your workflow.
- Open the Model dropdown.
- Select GPT-6 Sol for complex tasks or GPT-6 Luna for fast, high-volume tasks.
- Save and publish your workflow.
Why this matters
Better results on real business workflows: On OpenAI's benchmarks for end-to-end workflows across sales, marketing, support, and operations, both models outperform their GPT-5.6 predecessors. GPT-6 Luna delivers better results at up to 58 percent lower cost per task.
Cleaner outputs: Responses are clearer and tighter, with less jargon and no loss of substance, so generated content needs less cleanup before it reaches customers.
AI at lower cost: Both models cost half of what GPT-5.6 Sol and Luna did, which makes it practical to run AI steps across more workflows and at higher volumes.
