Retrieves a list of currently available models.
The return format is automatically determined based on the request headers:
x-api-key and anthropic-version headers are included.x-goog-api-key header or key query parameter is included.Authentication is done using Bearer Token.
Format: Authorization: Bearer sk-xxxxxx
Anthropic API Key (for Claude format)
Anthropic API version
"2023-06-01"
Google API Key (for Gemini format)
Google API Key (for Gemini format)