fix: drop realtime beta header for ga models and register new ones (#6032)

relay/channel/openai/adaptor.go

@@ -201,19 +201,26 @@ func (a *Adaptor) SetupRequestHeader(c *gin.Context, header *http.Header, info *
 		}
 	}
 	if info.RelayMode == relayconstant.RelayModeRealtime {
+		// OpenAI 已下线 Realtime Beta API,GA 模型收到 beta 标识会以 beta_api_shape_disabled 拒绝;
+		// 仅对遗留 preview 模型保留 beta 标识
+		legacyRealtimeBeta := strings.Contains(info.UpstreamModelName, "-realtime-preview")
 		swp := c.Request.Header.Get("Sec-WebSocket-Protocol")
 		if swp != "" {
 			items := []string{
 				"realtime",
 				"openai-insecure-api-key." + info.ApiKey,
-				"openai-beta.realtime-v1",
+			}
+			if legacyRealtimeBeta {
+				items = append(items, "openai-beta.realtime-v1")
 			}
 			header.Set("Sec-WebSocket-Protocol", strings.Join(items, ","))
 			//req.Header.Set("Sec-WebSocket-Key", c.Request.Header.Get("Sec-WebSocket-Key"))
 			//req.Header.Set("Sec-Websocket-Extensions", c.Request.Header.Get("Sec-Websocket-Extensions"))
 			//req.Header.Set("Sec-Websocket-Version", c.Request.Header.Get("Sec-Websocket-Version"))
 		} else {
-			header.Set("openai-beta", "realtime=v1")
+			if legacyRealtimeBeta {
+				header.Set("openai-beta", "realtime=v1")
+			}
 			if !hasAuthOverride {
 				header.Set("Authorization", "Bearer "+info.ApiKey)
 			}

relay/channel/openai/constant.go

@@ -58,6 +58,8 @@ var ModelList = []string{
 	"gpt-realtime", "gpt-realtime-2025-08-28",
 	"gpt-realtime-mini", "gpt-realtime-mini-2025-10-06", "gpt-realtime-mini-2025-12-15",
 	"gpt-realtime-1.5",
+	"gpt-realtime-2", "gpt-realtime-2.1", "gpt-realtime-2.1-mini",
+	"gpt-realtime-whisper", "gpt-realtime-translate",
 	"text-embedding-ada-002", "text-embedding-3-small", "text-embedding-3-large",
 	"text-curie-001", "text-babbage-001", "text-ada-001",
 	"text-moderation-latest", "text-moderation-stable",