§ models · storyline

OpenAI Previews GPT-5.6 With Sol, Terra, and Luna

OpenAI begins a limited preview of GPT-5.6, a three-tier model series comprising Sol, Terra, and Luna, each offering new reasoning modes.

Jun 26 · 02:00:00 · primary fetch2 sourcesupdated Jun 26 · 22:16:06

OpenAI has begun a limited preview of its next-generation GPT-5.6 model series, which features three tiered models (Sol, Terra, and Luna) and new reasoning modes.

read full article on marktechpost.com ↗

§ sources2 publications · timeline below

marktechpost.comOpenAI Previews GPT-5.6 With Sol, Terra, and Lunaprimary02:00:00
deploymentsafety.openai.comOpenAI says GPT-5.6 Sol and Terra were capable of identifying vulnerabilities but were unable to execute autonomous, end-to-end attacks against hardened targets (OpenAI)22:16:06

§ how this story moved

02:00:00primary — MarkTechPost publishes the launch post.
22:16:06Deploymentsafety picks up coverage.