gpt-5.6-sol has recovered and is operating normally.

We are seeing failed requests for gpt-5.6-sol and are investigating. (HTTP 503: {"error":{"code":"modelnotfound","message":"分组 auto 下模型 gpt-5.6-sol 无可用渠道（distributor） (request id: 20260721081107630025438268d9d6bOXofKdz)","type":"newapierror"}})