Conductor 0.87.3: GPT-6 Sol and GPT-6 Luna Conductor released version 0.87.3 on September 22, 2026, adding support for OpenAI's GPT-6 Sol and GPT-6 Luna models. Conductor said the two models cost 50% less than GPT-5.6. 0.87.3 September 22, 2026 GPT-6 Sol and GPT-6 Luna GPT-6 Sol and GPT-6 Luna are now available in Conductor OpenAI's latest frontier intelligence, costing 50% less than GPT-5.6.