Add support for Anthropic Claude Opus 4.5 model (#1199)

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## Motivation and Context
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Adding a new Anthropic LLM profile.
https://www.anthropic.com/news/claude-opus-4-5

https://aws.amazon.com/blogs/machine-learning/claude-opus-4-5-now-in-amazon-bedrock/

## Breaking Changes
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None.

---

#### Type of the changes
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- [ ] Bug fix (non-breaking change which fixes an issue)
- [ ] Breaking change (fix or feature that would cause existing
functionality to change)
- [ ] Documentation update
- [ ] Tests improvement
- [ ] Refactoring

#### Checklist
- [x] The pull request has a description of the proposed change
- [x] I read the [Contributing
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Author: aozherelyeva

integration-tests/src/jvmTest/kotlin/ai/koog/integration/tests/utils/Models.kt

@@ -25,7 +25,7 @@ object Models {
     @JvmStatic
     fun anthropicModels(): Stream<LLModel> {
         return Stream.of(
-            AnthropicModels.Opus_4_1,
+            AnthropicModels.Opus_4_5,
             AnthropicModels.Haiku_4_5,
             AnthropicModels.Sonnet_4_5,
         )

koog-ktor/src/commonMain/kotlin/ai/koog/ktor/utils/LLMModelParser.kt

@@ -242,6 +242,7 @@ private val ANTHROPIC_MODELS_MAP = mapOf(
     "opus_3" to AnthropicModels.Opus_3,
     "opus_4" to AnthropicModels.Opus_4,
     "opus_4_1" to AnthropicModels.Opus_4_1,
+    "opus_4_5" to AnthropicModels.Opus_4_5,
     "haiku_3" to AnthropicModels.Haiku_3,
     "haiku_3_5" to AnthropicModels.Haiku_3_5,
     "haiku_4_5" to AnthropicModels.Haiku_4_5,

koog-ktor/src/commonTest/kotlin/ai/koog/ktor/ModelIdentifierParsingTest.kt

@@ -182,6 +182,12 @@ class ModelIdentifierParsingTest {
         assertEquals(LLMProvider.Anthropic, opus4_1.provider)
         assertEquals(AnthropicModels.Opus_4_1, opus4_1)
 
+        // Test Opus 4.5
+        val opus4_5 = getModelFromIdentifier("anthropic.opus_4_5")
+        assertNotNull(opus4_5)
+        assertEquals(LLMProvider.Anthropic, opus4_5.provider)
+        assertEquals(AnthropicModels.Opus_4_5, opus4_5)
+
         // Test Haiku 3
         val haiku3 = getModelFromIdentifier("anthropic.haiku_3")
         assertNotNull(haiku3)

prompt/prompt-executor/prompt-executor-clients/prompt-executor-anthropic-client/src/commonMain/kotlin/ai/koog/prompt/executor/clients/anthropic/AnthropicModels.kt

@@ -7,6 +7,7 @@ import ai.koog.prompt.executor.clients.anthropic.AnthropicModels.Haiku_4_5
 import ai.koog.prompt.executor.clients.anthropic.AnthropicModels.Opus_3
 import ai.koog.prompt.executor.clients.anthropic.AnthropicModels.Opus_4
 import ai.koog.prompt.executor.clients.anthropic.AnthropicModels.Opus_4_1
+import ai.koog.prompt.executor.clients.anthropic.AnthropicModels.Opus_4_5
 import ai.koog.prompt.executor.clients.anthropic.AnthropicModels.Sonnet_3_5
 import ai.koog.prompt.executor.clients.anthropic.AnthropicModels.Sonnet_3_7
 import ai.koog.prompt.executor.clients.anthropic.AnthropicModels.Sonnet_4
@@ -28,6 +29,7 @@ import ai.koog.prompt.llm.LLModel
  * | [Sonnet_4]   | Fast            | $3-$15       | Text, Image, Tools, Document | Text, Tools |
  * | [Opus_4]     | Moderately fast | $15-$75      | Text, Image, Tools, Document | Text, Tools |
  * | [Opus_4_1]   | Moderately fast | $15-$75      | Text, Image, Tools, Document | Text, Tools |
+ * | [Opus_4_5]   | Moderately fast | $5-$25       | Text, Image, Tools, Document | Text, Tools |
  * | [Sonnet_4_5] | Fast            | $3-$15       | Text, Image, Tools, Document | Text, Tools |
  * | [Haiku_4_5]  | Fastest         | $1-$5        | Text, Image, Tools, Document | Text, Tools |
  */
@@ -222,6 +224,31 @@ public object AnthropicModels : LLModelDefinitions {
         maxOutputTokens = 32_000,
     )
 
+    /**
+     * Claude Opus 4.5 is Anthropic's premium model combining maximum intelligence with practical performance.
+     * It’s intelligent, efficient, and the best model in the world for coding, agents, and computer use.
+     * It’s also meaningfully better at everyday tasks like deep research and working with slides and spreadsheets.
+     *
+     * 200K context window
+     * Knowledge cutoff: August 2025
+     *
+     * @see <a href="https://docs.anthropic.com/claude/docs/models-overview">
+     */
+    public val Opus_4_5: LLModel = LLModel(
+        provider = LLMProvider.Anthropic,
+        id = "claude-opus-4-5",
+        capabilities = listOf(
+            LLMCapability.Temperature,
+            LLMCapability.Tools,
+            LLMCapability.ToolChoice,
+            LLMCapability.Vision.Image,
+            LLMCapability.Document,
+            LLMCapability.Completion
+        ),
+        contextLength = 200_000,
+        maxOutputTokens = 64_000,
+    )
+
     /**
      * Claude Sonnet 4.5 is Anthropic's best model for complex agents and coding.
      * It has the highest level of intelligence across most tasks with exceptional agent and coding capabilities.
@@ -280,6 +307,7 @@ internal val DEFAULT_ANTHROPIC_MODEL_VERSIONS_MAP: Map<LLModel, String> = mapOf(
     Sonnet_4 to "claude-sonnet-4-20250514",
     Opus_4 to "claude-opus-4-20250514",
     Opus_4_1 to "claude-opus-4-1-20250805",
+    Opus_4_5 to "claude-opus-4-5-20251101",
     Sonnet_4_5 to "claude-sonnet-4-5-20250929",
     Haiku_4_5 to "claude-haiku-4-5-20251001",
 )

prompt/prompt-executor/prompt-executor-clients/prompt-executor-bedrock-client/src/jvmMain/kotlin/ai/koog/prompt/executor/clients/bedrock/BedrockModels.kt

@@ -167,9 +167,7 @@ public object BedrockModels : LLModelDefinitions {
     ).effectiveModel
 
     /**
-     * Claude 4.1 Opus - Anthropic's most capable model
-     *
-     * This model sets new standards in:
+     * Claude 4.1 Opus sets new standards in:
      * - Complex reasoning and advanced coding
      * - Autonomous management of complex, multi-step tasks
      * - Extended thinking for deeper reasoning
@@ -183,6 +181,18 @@ public object BedrockModels : LLModelDefinitions {
         "anthropic.claude-opus-4-1-20250805-v1:0",
     ).effectiveModel
 
+    /**
+     * Claude 4.5 Opus - Anthropic's intelligent, efficient, and the best model in the world for coding, agents,
+     * and computer use.
+     * It’s also meaningfully better at everyday tasks like deep research and working with slides and spreadsheets.
+     * Opus 4.5 is a step forward in what AI systems can do, and a preview of larger changes to how work gets done.
+     *
+     */
+    public val AnthropicClaude45Opus: LLModel = BedrockModel(
+        AnthropicModels.Opus_4_5.withoutMultimodalCapabilities(),
+        "anthropic.claude-opus-4-5-20251101-v1:0",
+    ).effectiveModel
+
     /**
      * Claude 4 Sonnet - High-performance model with exceptional reasoning and efficiency
      *