Add support for Claude Opus 4.6 (#69)

* add support for claude opus 4.6

* swift-format

* fix package resolution depency error caused by awslabs/aws-crt-swift#373

Author: sebsto

Package.swift

@@ -10,9 +10,11 @@ let package = Package(
         .library(name: "BedrockService", targets: ["BedrockService"])
     ],
     dependencies: [
-        .package(url: "https://github.com/apple/swift-argument-parser.git", from: "1.6.2"),
-        .package(url: "https://github.com/awslabs/aws-sdk-swift", from: "1.6.3"),
-        .package(url: "https://github.com/smithy-lang/smithy-swift", from: "0.173.0"),
+        // use an old version until https://github.com/awslabs/aws-crt-swift/issues/373 will be resolved.
+        .package(url: "https://github.com/apple/swift-argument-parser.git", from: "1.2.3"),
+        // .package(url: "https://github.com/apple/swift-argument-parser.git", from: "1.7.0"),
+        .package(url: "https://github.com/awslabs/aws-sdk-swift", from: "1.6.50"),
+        .package(url: "https://github.com/smithy-lang/smithy-swift", from: "0.181.0"),
         .package(url: "https://github.com/apple/swift-log.git", from: "1.6.4"),
         .package(url: "https://github.com/awslabs/aws-crt-swift", from: "0.54.2"),
     ],

Sources/BedrockService/Models/Anthropic/AnthropicBedrockModels.swift

@@ -251,4 +251,20 @@ extension BedrockModel {
             maxReasoningTokens: Parameter(.maxReasoningTokens, minValue: 1_024, maxValue: 8_191, defaultValue: 4_096)
         )
     )
+    public static let claude_opus_v4_6: BedrockModel = BedrockModel(
+        id: "anthropic.claude-opus-4-6-v1",
+        name: "Claude Opus v4.6",
+        modality: Claude_Opus_v4_6(
+            parameters: TextGenerationParameters(
+                temperature: Parameter(.temperature, minValue: 0, maxValue: 1, defaultValue: 1),
+                maxTokens: Parameter(.maxTokens, minValue: 1, maxValue: 128_000, defaultValue: 8_192),
+                topP: Parameter(.topP, minValue: 0, maxValue: 1, defaultValue: 0.999),
+                topK: Parameter(.topK, minValue: 0, maxValue: 500, defaultValue: 0),
+                stopSequences: StopSequenceParams(maxSequences: 8191, defaultValue: []),
+                maxPromptSize: 200_000
+            ),
+            features: [.textGeneration, .systemPrompts, .document, .vision, .toolUse, .reasoning],
+            maxReasoningTokens: Parameter(.maxReasoningTokens, minValue: 1_024, maxValue: 8_191, defaultValue: 4_096)
+        )
+    )
 }

Sources/BedrockService/Models/Anthropic/AnthropicGlobalModels.swift

@@ -112,3 +112,51 @@ struct Claude_Opus_v4_5: TextModality, ConverseModality, ConverseStreamingModali
         try anthropicText.getTextResponseBody(from: data)
     }
 }
+
+struct Claude_Opus_v4_6: TextModality, ConverseModality, ConverseStreamingModality,
+    GlobalCrossRegionInferenceModality
+{
+    private let anthropicText: AnthropicText
+
+    let converseParameters: ConverseParameters
+    let converseFeatures: [ConverseFeature]
+
+    init(parameters: TextGenerationParameters, features: [ConverseFeature], maxReasoningTokens: Parameter<Int>) {
+        self.anthropicText = AnthropicText(
+            parameters: parameters,
+            features: features,
+            maxReasoningTokens: maxReasoningTokens
+        )
+        self.converseParameters = anthropicText.converseParameters
+        self.converseFeatures = anthropicText.converseFeatures
+    }
+
+    func getName() -> String { anthropicText.getName() }
+    func getParameters() -> TextGenerationParameters { anthropicText.getParameters() }
+    func getConverseParameters() -> ConverseParameters { anthropicText.getConverseParameters() }
+    func getConverseFeatures() -> [ConverseFeature] { anthropicText.getConverseFeatures() }
+
+    func getTextRequestBody(
+        prompt: String,
+        maxTokens: Int?,
+        temperature: Double?,
+        topP: Double?,
+        topK: Int?,
+        stopSequences: [String]?,
+        serviceTier: ServiceTier
+    ) throws -> BedrockBodyCodable {
+        try anthropicText.getTextRequestBody(
+            prompt: prompt,
+            maxTokens: maxTokens,
+            temperature: temperature,
+            topP: topP,
+            topK: topK,
+            stopSequences: stopSequences,
+            serviceTier: serviceTier
+        )
+    }
+
+    func getTextResponseBody(from data: Data) throws -> ContainsTextCompletion {
+        try anthropicText.getTextResponseBody(from: data)
+    }
+}

Sources/BedrockService/Models/BedrockModel.swift

@@ -83,6 +83,8 @@ public struct BedrockModel: Hashable, Sendable, Equatable, RawRepresentable {
             self = BedrockModel.claude_sonnet_v4_5
         case BedrockModel.claude_opus_v4_5.id:
             self = BedrockModel.claude_opus_v4_5
+        case BedrockModel.claude_opus_v4_6.id:
+            self = BedrockModel.claude_opus_v4_6
         // titan
         case BedrockModel.titan_text_g1_premier.id:
             self = BedrockModel.titan_text_g1_premier