Update zen models

Author: fwang

providers/opencode/models/glm-4.6.toml

@@ -1,4 +1,4 @@
-name = "GLM-4.6 (beta)"
+name = "GLM-4.6"
 release_date = "2025-09-30"
 last_updated = "2025-09-30"
 attachment = false
@@ -7,11 +7,11 @@ temperature = true
 tool_call = true
 knowledge = "2025-04"
 open_weights = true
-status = "beta"
 
 [cost]
 input = 0.6
-output = 1.9
+output = 2.2
+cache_read = 0.1
 
 [limit]
 context = 204800