openrouter: added gpt 4.1 model family (#14101)

Author: mubashir1osmani

model_prices_and_context_window.json

@@ -11991,6 +11991,108 @@
         "mode": "chat",
         "supports_tool_choice": true
     },
+    "openrouter/openai/gpt-4.1": {
+        "max_tokens": 32768,
+        "max_input_tokens": 1047576,
+        "max_output_tokens": 32768,
+        "input_cost_per_token": 2e-06,
+        "output_cost_per_token": 8e-06,
+        "cache_read_input_token_cost": 5e-07,
+        "litellm_provider": "openrouter",
+        "mode": "chat",
+        "supports_function_calling": true,
+        "supports_parallel_function_calling": true,
+        "supports_response_schema": true,
+        "supports_vision": true,
+        "supports_prompt_caching": true,
+        "supports_system_messages": true,
+        "supports_tool_choice": true
+    },
+    "openrouter/openai/gpt-4.1-2025-04-14": {
+        "max_tokens": 32768,
+        "max_input_tokens": 1047576,
+        "max_output_tokens": 32768,
+        "input_cost_per_token": 2e-06,
+        "output_cost_per_token": 8e-06,
+        "cache_read_input_token_cost": 5e-07,
+        "litellm_provider": "openrouter",
+        "mode": "chat",
+        "supports_function_calling": true,
+        "supports_parallel_function_calling": true,
+        "supports_response_schema": true,
+        "supports_vision": true,
+        "supports_prompt_caching": true,
+        "supports_system_messages": true,
+        "supports_tool_choice": true
+    },
+    "openrouter/openai/gpt-4.1-mini": {
+        "max_tokens": 32768,
+        "max_input_tokens": 1047576,
+        "max_output_tokens": 32768,
+        "input_cost_per_token": 4e-07,
+        "output_cost_per_token": 1.6e-06,
+        "cache_read_input_token_cost": 1e-07,
+        "litellm_provider": "openrouter",
+        "mode": "chat",
+        "supports_function_calling": true,
+        "supports_parallel_function_calling": true,
+        "supports_response_schema": true,
+        "supports_vision": true,
+        "supports_prompt_caching": true,
+        "supports_system_messages": true,
+        "supports_tool_choice": true
+    },
+    "openrouter/openai/gpt-4.1-mini-2025-04-14": {
+        "max_tokens": 32768,
+        "max_input_tokens": 1047576,
+        "max_output_tokens": 32768,
+        "input_cost_per_token": 4e-07,
+        "output_cost_per_token": 1.6e-06,
+        "cache_read_input_token_cost": 1e-07,
+        "litellm_provider": "openrouter",
+        "mode": "chat",
+        "supports_function_calling": true,
+        "supports_parallel_function_calling": true,
+        "supports_response_schema": true,
+        "supports_vision": true,
+        "supports_prompt_caching": true,
+        "supports_system_messages": true,
+        "supports_tool_choice": true
+    },
+    "openrouter/openai/gpt-4.1-nano": {
+        "max_tokens": 32768,
+        "max_input_tokens": 1047576,
+        "max_output_tokens": 32768,
+        "input_cost_per_token": 1e-07,
+        "output_cost_per_token": 4e-07,
+        "cache_read_input_token_cost": 2.5e-08,
+        "litellm_provider": "openrouter",
+        "mode": "chat",
+        "supports_function_calling": true,
+        "supports_parallel_function_calling": true,
+        "supports_response_schema": true,
+        "supports_vision": true,
+        "supports_prompt_caching": true,
+        "supports_system_messages": true,
+        "supports_tool_choice": true
+    },
+    "openrouter/openai/gpt-4.1-nano-2025-04-14": {
+        "max_tokens": 32768,
+        "max_input_tokens": 1047576,
+        "max_output_tokens": 32768,
+        "input_cost_per_token": 1e-07,
+        "output_cost_per_token": 4e-07,
+        "cache_read_input_token_cost": 2.5e-08,
+        "litellm_provider": "openrouter",
+        "mode": "chat",
+        "supports_function_calling": true,
+        "supports_parallel_function_calling": true,
+        "supports_response_schema": true,
+        "supports_vision": true,
+        "supports_prompt_caching": true,
+        "supports_system_messages": true,
+        "supports_tool_choice": true
+    },
     "openrouter/openai/gpt-5-mini": {
         "max_tokens": 128000,
         "max_input_tokens": 400000,