PHP: Upgrade Anthropic Claude to v3 and use Messages API (#7191)

Bump Anthropic Claude to v3 and use Messages API instead of now outdated Text Completions API

Co-authored-by: Dennis Traub <[email protected]>

Author: DennisTraub

php/example_code/bedrock-runtime/BedrockRuntimeService.php

@@ -37,22 +37,24 @@ public function invokeClaude($prompt)
 
         $completion = "";
         try {
-            $modelId = 'anthropic.claude-v2';
+            $modelId = 'anthropic.claude-3-haiku-20240307-v1:0';
         // Claude requires you to enclose the prompt as follows:
-            $prompt = "\n\nHuman: {$prompt}\n\nAssistant:";
             $body = [
-                'prompt' => $prompt,
-                'max_tokens_to_sample' => 200,
+                'anthropic_version' => 'bedrock-2023-05-31',
+                'max_tokens' => 512,
                 'temperature' => 0.5,
-                'stop_sequences' => ["\n\nHuman:"],
+                'messages' => [[
+                    'role' => 'user',
+                    'content' => $prompt
+                ]]
             ];
             $result = $this->bedrockRuntimeClient->invokeModel([
                 'contentType' => 'application/json',
                 'body' => json_encode($body),
                 'modelId' => $modelId,
             ]);
             $response_body = json_decode($result['body']);
-            $completion = $response_body->completion;
+            $completion = $response_body->content[0]->text;
         } catch (Exception $e) {
             echo "Error: ({$e->getCode()}) - {$e->getMessage()}\n";
         }

php/example_code/bedrock-runtime/GettingStartedWithBedrockRuntime.php

@@ -23,9 +23,9 @@ public function runExample()
         $bedrockRuntimeService = new BedrockRuntimeService();
         $prompt = 'In one paragraph, who are you?';
         echo "\nPrompt: " . $prompt;
-        echo "\n\nAnthropic Claude:";
+        echo "\n\nAnthropic Claude:\n";
         echo $bedrockRuntimeService->invokeClaude($prompt);
-        echo "\n\nAI21 Labs Jurassic-2: ";
+        echo "\n\nAI21 Labs Jurassic-2:\n";
         echo $bedrockRuntimeService->invokeJurassic2($prompt);
         echo "\n---------------------------------------------------------------------\n";
         $image_prompt = 'stylized picture of a cute old steampunk robot';
@@ -35,12 +35,12 @@ public function runExample()
         $style_preset = 'photographic';
         $base64 = $bedrockRuntimeService->invokeStableDiffusion($image_prompt, $diffusionSeed, $style_preset);
         $image_path = $this->saveImage($base64, 'stability.stable-diffusion-xl');
-        echo "The generated images have been saved to $image_path";
+        echo "The generated image has been saved to $image_path";
         echo "\n\nAmazon Titan Image Generation:\n";
         $titanSeed = rand(0, 2147483647);
         $base64 = $bedrockRuntimeService->invokeTitanImage($image_prompt, $titanSeed);
         $image_path = $this->saveImage($base64, 'amazon.titan-image-generator-v1');
-        echo "The generated images have been saved to $image_path";
+        echo "The generated image has been saved to $image_path";
     }
 
     private function saveImage($base64_image_data, $model_id): string

php/example_code/bedrock-runtime/README.md

@@ -44,19 +44,19 @@ functions within the same service.
 
 ### AI21 Labs Jurassic-2
 
-- [InvokeModel](BedrockRuntimeService.php#L64)
+- [InvokeModel](BedrockRuntimeService.php#L66)
 
 ### Amazon Titan Image Generator
 
-- [InvokeModel](BedrockRuntimeService.php#L131)
+- [InvokeModel](BedrockRuntimeService.php#L133)
 
 ### Anthropic Claude
 
 - [InvokeModel](BedrockRuntimeService.php#L31)
 
 ### Stable Diffusion
 
-- [InvokeModel](BedrockRuntimeService.php#L94)
+- [InvokeModel](BedrockRuntimeService.php#L96)
 
 
 <!--custom.examples.start-->
@@ -122,4 +122,4 @@ Run the tests with the following command:
 
 Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
 
-SPDX-License-Identifier: Apache-2.0
+SPDX-License-Identifier: Apache-2.0

php/example_code/bedrock-runtime/composer.json

@@ -1,6 +1,6 @@
 {
     "require": {
-        "aws/aws-sdk-php": "^3.324.10",
+        "aws/aws-sdk-php": "^3.336",
         "guzzlehttp/guzzle": "^7.9.2"
     },
     "autoload": {