GPT-6 Luna

OpenAI · September 29, 2026

● activeCloseddense transformermultimodal
Context Window512K tokens

Description

Lightweight, ultra-low-latency tier of GPT-6 optimized for continuous developer tooling, streaming reasoning, and fast agent loops.

Key Innovations

Agentic
AgenticModels that can autonomously plan, execute multi-step tasks, use tools, and self-correct without human intervention.
Code Gen
Code GenAbility to write, debug, and understand programming code across multiple languages.

Enabled By

Cerebras CS-4 (Nexus)CEREBRAS · August 2026
Nexus Rack-scale Cluster