LUNA

GPT-5.6 Luna is the fast and affordable model in OpenAI’s GPT-5.6 series, built to bring strong capability to users and developers who need practical intelligence with lower overhead. In the new GPT-5.6 naming system, the number identifies the model generation, while Sol, Terra, and Luna identify durable capability tiers that can advance on their own cadence, giving people and developers clearer choices across intelligence, speed, and cost. Luna sits alongside Sol, the flagship model, and Terra, the balanced model for everyday work, as part of a family designed for broader access to next-generation AI. During the limited preview, GPT-5.6 models are initially available through the API and Codex to a select group of trusted partners and organizations, with plans for broader availability in ChatGPT, Codex, and the API. OpenAI developed GPT-5.6 Sol, Terra, and Luna with its most robust safeguards to date, with configurations matched to each model’s capabilities.

ironSource Luna is the world’s first cross-channel app marketing platform with built-in automated creative production. Luna’s core products enable app marketing teams of all sizes and categories to produce insights-driven interactive creatives at scale, deploy them across major marketing channels, and optimize their performance with comprehensive analytics and automation - all in one place. With one powerful platform, Luna creates a unified point of access to control every element of app marketing activity, for every member of the marketing team, empowering them with the tools they need to work in concert to drive incremental growth. Luna is used by leading app and game companies such as Zynga, King, Funplus, among others.