Dust Platform Reduces Prices for GPT-5.6 Luna and Terra, Speeds Up Sol
Dust co-founder Thomas Sottiaux announced an 80% price reduction for the GPT-5.6 Luna model and a 20% reduction for the Terra model on the platform. Additionally, the platform has introduced faster speeds for the GPT-5.6 Sol model in /fast mode and a 10x cheaper auto-approve mode powered by Luna. These updates make deploying agentic workflows and automated reviews significantly more cost-effective for developers using the Dust platform. It reflects the ongoing trend of AI platforms optimizing costs and routing tasks to smaller, cheaper models like Luna to improve efficiency. The "review for me" auto-approve mode is now roughly 10 times cheaper because it has transitioned to using the lightweight Luna model. GPT-5.6 Sol, the frontier model of the family, now runs faster when users invoke the /fast mode.
## BACKGROUND
GPT-5.6 is a family of large language models released by OpenAI in July 2026, structured into three tiers: Luna, Terra, and Sol. Luna is the fastest and most cost-effective model for high-volume tasks, Terra serves as a balanced mid-tier option, and Sol is the frontier model designed for complex reasoning, coding, and cybersecurity. Dust is an AI platform that allows teams to build custom AI assistants and workflows using these models.