Speculation points to a Thursday GPT-5.6 launch

Social posts are floating July 9 as the day OpenAI takes GPT-5.6 broadly available. There's no source behind the date. OpenAI has only said general availability is coming "in the coming weeks," with no firm date announced.

Here's what's actually on record. OpenAI began a limited preview of the GPT-5.6 family on June 26 through the API and Codex, not ChatGPT. Access is restricted to a small group of trusted partners whose participation was shared with the U.S. government, a staggered rollout the administration requested over national security concerns. Reporting ties the request to the Office of the National Cyber Director and the Office of Science and Technology Policy.

The family is three tiers under a new naming scheme: Sol (flagship), Terra (mid), Luna (cheapest). "Sol Ultra" isn't a fourth model. Ultra is a mode inside Sol that runs subagents in parallel for long-horizon work, alongside a new max reasoning effort setting. On Terminal-Bench 2.1, Sol scores 88.8% and the Ultra configuration hits 91.9%, ahead of Claude Mythos 5 at 84.3% and GPT-5.5 at 88.0%. All benchmarks are OpenAI's own, from a preview no independent party can verify yet.

Pricing, per million tokens: Sol $5 in / $30 out, Terra $2.50 / $15, Luna $1 / $6. A Cerebras deployment of Sol at up to 750 tokens per second is slated for July, limited to select customers at first.

The July 9 date is worth watching, not repeating as fact. If you're waiting on API access for client work, the gate right now is the partner program, not a public launch. Broad availability lands whenever the government sign-off clears, and OpenAI has said that's customer by customer during the preview.