Every message in a chat is sent with one model, and if that model cannot be used the message is refused so you can pick another; another model is never swapped in silently. This page covers the send-time refusals, the thinking levels, the service messages that can appear instead of an answer, and replies that stop early; the picker itself is described in Models in a chat.
The explanation is one of these lines:
| What the chat says | What it means |
|---|---|
| "No model was selected. Pick a model and send again." | The message carried no model. |
| "This model is not on this mind's list. Pick one from the model menu, or ask a mind manager to enable it." | The model is not enabled for this Mind. |
| "An administrator turned this model off for your organisation. Pick another model, or ask an admin to allow it again." | Your company no longer allows the model; the picker drops it as well. |
| "This model is no longer in the catalog. Pick a different model and send again." | The model has left the catalogue. |
In every case, choose a model from the list and send again. Enabling models for a Mind is described in Choose models and AI behaviour.
When a model can think before it answers, the Effort control in the model picker sets how hard it thinks. The levels are roughly shares of the token budget: Max about 95%, then Extra High, High about 80%, Medium about 50%, Low about 20% and Minimal about 10%, down to None, which turns thinking off.
Which levels a model offers is shown in the picker; the control that sets them, and what happens to your choice when you switch models, is in Models in a chat.
Sometimes an answer never starts because the AI service behind the chat could not take the request. The chat shows a short message in place of an answer; these are the ones you may meet.
| What the chat says | What it means and what to do |
|---|---|
| "Insufficient credits" | The account has no credits left for the request. Ask your administrator to check the account, then send again. |
| "Model requires moderation, contact support" | The request must pass moderation before a model can take it. Contact support. |
| "No provider could serve this request with the selected model." Please switch to a different model. | The chosen model could not be served for this request. Pick another model from the list and send again. |
| The chat reports an invalid API key. | A problem on the service side, not something in your message. Try again; if it keeps happening, tell your administrator. |
| The chat reports that the AI service is temporarily unavailable. | The service is paused for a moment. Wait a little, then send again. |
| "Model is down, please choose a different one or try again later" | The chosen model is not answering right now. Pick another model, or try again later. |
| "There is no available model provider that meets your routing requirements" | No available provider matches the routing requirements for the request. Pick another model, or try again later. |
Other messages you may meet are collected in Minds troubleshooting.
A reply can stop part-way when the model reaches its output limit for a single answer. Everything it wrote stays in the chat, and this message follows:
"The response hit the output limit and stopped early. What was written so far is kept - press Continue to pick up where it left off."
Press Continue to let the model carry on from where it stopped; the retry and continue controls are described in Chat states and recovery.
The message is refused, and the chat explains it with "No model was selected. Pick a model and send again." Choose a model in the message box and send again; your text comes back to the message box.
The Mind offers only the models enabled for it, and this one is not among them. Pick one from the model menu, or ask a mind manager to enable the model. See Choose models and AI behaviour.
Your company no longer allows the model, so the chat refuses sends that carry it. Pick another model, or ask an administrator to allow it again.
The model has been removed from the catalogue, so the chat refuses messages that carry it. Pick a model from the current list and send again.
They describe roughly how much of the token budget the model may think with: Max about 95%, High about 80%, Medium about 50%, Low about 20% and Minimal about 10%, and None turns thinking off. Extra High sits between Max and High. Which levels a model offers is shown in the picker; see Models in a chat.
The account behind the AI service has no credits for the request, so the chat cannot send it. Ask your administrator to check the account, then send again.
The request must pass moderation before a model can take it. Contact support.
The chosen model could not be served for this request right now. Pick another model from the list and send again.
The chosen model is not answering at the moment. Pick another model, or try again later.
No available provider matches the routing requirements for the request. Pick a different model, or try again later.
It is a service-side problem, not something in your message. Try again, and if it keeps happening, tell your administrator.
The model reached its output limit for a single answer, so the reply stopped part-way. What it already wrote stays in the chat; press Continue to let it carry on from where it stopped.