chore: sync new models

Author: ankrgyl

packages/proxy/schema/model_list.json

@@ -1532,8 +1532,8 @@
   "openai/gpt-oss-120b": {
     "format": "openai",
     "flavor": "chat",
-    "input_cost_per_mil_tokens": 0.15,
-    "output_cost_per_mil_tokens": 0.6,
+    "input_cost_per_mil_tokens": 0.1,
+    "output_cost_per_mil_tokens": 0.5,
     "input_cache_read_cost_per_mil_tokens": 0.075,
     "displayName": "OpenAI GPT-OSS (120B)",
     "reasoning": true,
@@ -6873,12 +6873,12 @@
     "format": "openai",
     "flavor": "chat",
     "multimodal": true,
-    "input_cost_per_mil_tokens": 1.25,
-    "output_cost_per_mil_tokens": 2.5,
+    "input_cost_per_mil_tokens": 2,
+    "output_cost_per_mil_tokens": 6,
     "input_cache_read_cost_per_mil_tokens": 0.2,
     "displayName": "Grok 4.20 Reasoning (0309)",
     "reasoning": true,
-    "max_input_tokens": 1000000,
+    "max_input_tokens": 2000000,
     "max_output_tokens": 2000000,
     "available_providers": [
       "xAI"