Add GPT-4.1 models to OpenAI ChatModel enum

Signed-off-by: David Frizelle <[email protected]>

Author: dafriz

models/spring-ai-openai/src/main/java/org/springframework/ai/openai/api/OpenAiApi.java

@@ -347,6 +347,34 @@ public enum ChatModel implements ChatModelDescription {
 		 */
 		O3_MINI("o3-mini"),
 
+		/**
+		 * <b>GPT-4.1</b> is our flagship model for complex tasks. It is well suited for
+		 * problem solving across domains.
+		 * <p>
+		 * Context window: 1,047,576 tokens. Max output tokens: 32,768 tokens. The
+		 * knowledge cutoff for GPT-4.1 models is June, 2024.
+		 * <p>
+		 */
+		GPT_4_1("gpt-4.1"),
+
+		/**
+		 * <b>GPT-4.1-mini</b> is balanced for intelligence, speed, and cost.
+		 * <p>
+		 * Context window: 1,047,576 tokens. Max output tokens: 32,768 tokens. The
+		 * knowledge cutoff for GPT-4.1 models is June, 2024.
+		 * <p>
+		 */
+		GPT_4_1_MINI("gpt-4.1-mini"),
+
+		/**
+		 * <b>GPT-4.1-nano</b> is our fastest, most cost-effective GPT-4.1 model.
+		 * <p>
+		 * Context window: 1,047,576 tokens. Max output tokens: 32,768 tokens. The
+		 * knowledge cutoff for GPT-4.1 models is June, 2024.
+		 * <p>
+		 */
+		GPT_4_1_NANO("gpt-4.1-nano"),
+
 		/**
 		 * <b>GPT-4o ("omni")</b> is our versatile, high-intelligence flagship model. It
 		 * accepts both text and image inputs and produces text outputs (including