Why this page exists
Searchers looking for GPT-5.6 Luna usually want one of three things: the API price after the July 30 cut, the model id (not the Sol alias), or a way to run Luna without ChatGPT Plus. CloudAxis is the third — Auto Mode is fixed to Luna on Free, Growth, Pro, and Max.
What’s live today
- Model: OpenAI
gpt-5.6-lunavia Auto Mode - API list (Jul 30, 2026): $0.20 input / $1.20 output per 1M · cached $0.02
- Product rule: no manual Sol/Terra/Luna dropdown — capacity upgrades only
- Runtime: persistent AI cloud computer — browser, files, schedules, specialists
Luna without Plus
On ChatGPT Work and Codex, Free/Go users get Terra; selecting Luna typically needs Plus or above. The API has no Plus gate — and neither does CloudAxis Free Auto Mode. You get Luna inside a hosted agent OS, not a bare completion endpoint.
Don’t confuse the alias
Bare gpt-5.6 routes to Sol (~25× Luna list rates). Pin gpt-5.6-luna in your own API clients. On CloudAxis you never type it — we already did.
Cluster reading
- GPT-5.6 Luna complete guide (pillar)
- Sol vs Terra vs Luna
- gpt-5.6 → Sol gotcha
- Luna −80% price cut
- Cost calculator · Pricing · Auto Mode policy
FAQ
Can I use GPT-5.6 Luna on CloudAxis without ChatGPT Plus?
Yes. Auto Mode is powered by GPT-5.6 Luna on every plan including Free.
What is the GPT-5.6 Luna model ID?
gpt-5.6-luna. Bare gpt-5.6 is Sol.
How much does Luna cost on the OpenAI API?
$0.20 / $1.20 per 1M tokens after the July 30, 2026 cut (cached input $0.02).
Can I switch Auto Mode to Sol or Terra?
No. Auto Mode is fixed to Luna. Upgrade for credits and capacity, not a model catalog.