GPT models
Ziva offers GPT 6 Astra, GPT 6.1 Sol, and GPT 6 Luna. You can ask: “Add a coin counter to my simple 2D game. Explain each change in plain language.”
Choose a model and billing connection
Open the model picker above the message box. Use Advanced to find OpenAI’s models, then check the selected connection before sending.
- Hosted GPT 6.1 Sol and GPT 6 Astra require Pro or higher and use Ziva usage.
- Hosted GPT 6 Luna follows Ziva Baby’s free-usage rules when hosted usage is available on your plan.
- A ChatGPT or OpenRouter connection uses your own account, not your Ziva allowance. ChatGPT offers Sol 6.1 and Luna 6; OpenRouter’s available GPT choice is GPT 6 Astra.
Privacy
Hosted GPT models use temporary retention. With ChatGPT or OpenRouter, the external account’s data policy applies; Ziva does not promise zero retention for those connections.
Optional help: chats using retired GPT 5.6 models
Continue an existing chat
GPT 5.6 Sol, Terra, and Luna are retired. Hosted chats that used them continue with these replacements:
| Previous model | Replacement |
|---|---|
| GPT 5.6 Sol | GPT 6.1 Sol |
| GPT 5.6 Terra | GPT 6.1 Sol |
| GPT 5.6 Luna | GPT 6 Luna |
Your conversation history stays in the chat. For a ChatGPT or OpenRouter connection, select the current model in the picker before continuing. You do not need to remove and reconnect your account.
Troubleshooting
If an old model is unavailable, select its replacement in the picker. The current names are GPT 6.1 Sol and GPT 6 Luna, not GPT 6.1 Luna. A Pro requirement after switching from Terra to Sol is expected for hosted usage. Choose an available model or use your connected external account instead.
If a long chat asks to compact (shorten its history), compact it before retrying. If compaction fails, keep the chat and report the error to Ziva support rather than deleting its history.