feat: Add minimal and medium thinking levels.

PiperOrigin-RevId: 845014005

Author: BenjaminKazemi

src/main/java/com/google/genai/types/ThinkingConfig.java

@@ -44,7 +44,7 @@ public abstract class ThinkingConfig extends JsonSerializable {
   @JsonProperty("thinkingBudget")
   public abstract Optional<Integer> thinkingBudget();
 
-  /** Optional. The level of thoughts tokens that the model should generate. */
+  /** Optional. The number of thoughts tokens that the model should generate. */
   @JsonProperty("thinkingLevel")
   public abstract Optional<ThinkingLevel> thinkingLevel();
 
@@ -107,7 +107,7 @@ public Builder clearThinkingBudget() {
     /**
      * Setter for thinkingLevel.
      *
-     * <p>thinkingLevel: Optional. The level of thoughts tokens that the model should generate.
+     * <p>thinkingLevel: Optional. The number of thoughts tokens that the model should generate.
      */
     @JsonProperty("thinkingLevel")
     public abstract Builder thinkingLevel(ThinkingLevel thinkingLevel);
@@ -125,7 +125,7 @@ public Builder clearThinkingLevel() {
     /**
      * Setter for thinkingLevel given a known enum.
      *
-     * <p>thinkingLevel: Optional. The level of thoughts tokens that the model should generate.
+     * <p>thinkingLevel: Optional. The number of thoughts tokens that the model should generate.
      */
     @CanIgnoreReturnValue
     public Builder thinkingLevel(ThinkingLevel.Known knownType) {
@@ -135,7 +135,7 @@ public Builder thinkingLevel(ThinkingLevel.Known knownType) {
     /**
      * Setter for thinkingLevel given a string.
      *
-     * <p>thinkingLevel: Optional. The level of thoughts tokens that the model should generate.
+     * <p>thinkingLevel: Optional. The number of thoughts tokens that the model should generate.
      */
     @CanIgnoreReturnValue
     public Builder thinkingLevel(String thinkingLevel) {

src/main/java/com/google/genai/types/ThinkingLevel.java

@@ -23,19 +23,25 @@
 import com.google.common.base.Ascii;
 import java.util.Objects;
 
-/** The level of thoughts tokens that the model should generate. */
+/** The number of thoughts tokens that the model should generate. */
 public class ThinkingLevel {
 
   /** Enum representing the known values for ThinkingLevel. */
   public enum Known {
-    /** Default value. */
+    /** Unspecified thinking level. */
     THINKING_LEVEL_UNSPECIFIED,
 
     /** Low thinking level. */
     LOW,
 
+    /** Medium thinking level. */
+    MEDIUM,
+
     /** High thinking level. */
-    HIGH
+    HIGH,
+
+    /** MINIMAL thinking level. */
+    MINIMAL
   }
 
   private Known thinkingLevelEnum;