同样的配置 openai 和 claude 就没问题：

location /xai {
    proxy_pass  https://api.x.ai/;
    proxy_ssl_server_name on;
    proxy_set_header Host api.x.ai;
    proxy_set_header Connection '';
    proxy_http_version 1.1;
    chunked_transfer_encoding off;
    proxy_buffering off;
    proxy_cache off; 
    proxy_set_header X-Forwarded-For $remote_addr;
    proxy_set_header X-Forwarded-Proto $scheme;
}

请求：

https://chat.xxxxx.com/xai/v1/chat/completions

报错：

{
    "code": "Some requested entity was not found",
    "error": "No handler found on route. Please double check your URL and consult https://api.x.ai/docs for more information."
}