The Provider selected in Account Settings โ General is used, unless the model name starts with one of these prefixes:
or:OpenRouteroai:OpenAIg:Googlecla:Claude
After the prefix, write the model slug exactly the way that provider's API expects it:
OpenRouter ยท vendor/model
or:anthropic/claude-opus-5.5
Claude
cla:claude-opus-5-5
Tip: add :online to the end to enable web search, e.g. g:gemini-3.8-flash:online.