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OpenAI announced public launch of GPT-5.6 (codename Sol) along with models Terra…

Brief

Author @itsandrewgao reposted OpenAI’s 2026-07-08 announcement that GPT-5.6 (Sol) and two companion models, Terra and Luna, will be made publicly available, with preview access being expanded worldwide. The original post specified the release as “this Thursday,” indicating an imminent rollout (around July 9, 2026).

Why it matters

OpenAI announced public launch of GPT-5.6 (codename Sol) along with models Terra and Luna, via a post shared on 2026-07-08.

Key details

  • OpenAI said preview access is being expanded globally; the announcement said the launches would occur “this Thursday” (around July 9, 2026).
Source evidence

cool

OpenAI (@OpenAI)

GPT-5.6 Sol, along with Terra and Luna, will launch publicly this Thursday.

We’re expanding preview access globally now.

— https://nitter.net/OpenAI/status/2074704958419792299#m