English
← Back to timeline

GPT-5.6 Begins with a Government-Requested Limited Preview

Era: The LLM Era · 2020s–Present

OpenAI began a limited preview of GPT-5.6 Sol, Terra, and Luna on June 26, 2026 with a small group of trusted partners at the U.S. government’s request, while saying this process should not become the long-term default. OpenAI made the GPT-5.6 family generally available on July 9.

OpenAI

Status
Verified
Content type
fact
Sources reviewed
Organizations
OpenAI · U.S. Government

Sources and support

  1. A preview of GPT-5.6 Sol, Terra, and Luna

    OpenAI · Source type: primary-announcement

    Documents the government-requested limited preview and model names.

    Published: ·Accessed:

  2. GPT-5.6: Frontier intelligence that scales with your ambition

    OpenAI · Source type: primary-announcement

    Documents general availability on July 9, 2026.

    Published: ·Accessed: