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Merged
brmur merged 7 commits into from
Jan 30, 2026
Merged

Multi: Resolve out of date Titan Models #7727

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cadb9f0
Fix for out of date Titan models.
rlhagerm Jan 27, 2026
70af2ce
Update README.md
rlhagerm Jan 27, 2026
6a540c9
Update bedrock-runtime_metadata.yaml
rlhagerm Jan 27, 2026
618e1ef
Delete invoke_model.py
rlhagerm Jan 27, 2026
365e1a8
Revert "Delete invoke_model.py"
rlhagerm Jan 27, 2026
30ce161
Revert removed example that is still used in other docs.
rlhagerm Jan 27, 2026
bc5d30a
Update README.md
rlhagerm Jan 27, 2026
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2 changes: 1 addition & 1 deletion dotnetv3/Bedrock-runtime/Actions/InvokeModelAsync.cs
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Expand Up @@ -405,7 +405,7 @@ public static async Task<string> InvokeTitanTextG1Async(string prompt)
/// </remarks>
public static async Task<string?> InvokeTitanImageGeneratorG1Async(string prompt, int seed)
{
string titanImageGeneratorG1ModelId = "amazon.titan-image-generator-v1";
string titanImageGeneratorG1ModelId = "amazon.titan-image-generator-v2:0";

AmazonBedrockRuntimeClient client = new(RegionEndpoint.USEast1);

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2 changes: 1 addition & 1 deletion dotnetv4/Bedrock-runtime/Actions/InvokeModelAsync.cs
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Expand Up @@ -461,7 +461,7 @@ public static async Task<string> InvokeTitanTextG1Async(string prompt)
/// </remarks>
public static async Task<string?> InvokeTitanImageGeneratorG1Async(string prompt, int seed)
{
string titanImageGeneratorG1ModelId = "amazon.titan-image-generator-v1";
string titanImageGeneratorG1ModelId = "amazon.titan-image-generator-v2:0";

AmazonBedrockRuntimeClient client = new(RegionEndpoint.USEast1);

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2 changes: 1 addition & 1 deletion gov2/bedrock-runtime/actions/invoke_model.go
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Expand Up @@ -106,7 +106,7 @@ type TitanImageResponse struct {
// Invokes the Titan Image model to create an image using the input provided
// in the request body.
func (wrapper InvokeModelWrapper) InvokeTitanImage(ctx context.Context, prompt string, seed int64) (string, error) {
modelId := "amazon.titan-image-generator-v1"
modelId := "amazon.titan-image-generator-v2:0"

body, err := json.Marshal(TitanImageRequest{
TaskType: "TEXT_IMAGE",
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2 changes: 1 addition & 1 deletion gov2/bedrock-runtime/actions/invoke_model_test.go
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Expand Up @@ -18,7 +18,7 @@ import (
)

const CLAUDE_MODEL_ID = "anthropic.claude-v2"
const TITAN_IMAGE_MODEL_ID = "amazon.titan-image-generator-v1"
const TITAN_IMAGE_MODEL_ID = "amazon.titan-image-generator-v2:0"

const prompt = "A test prompt"

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2 changes: 1 addition & 1 deletion gov2/bedrock-runtime/scenarios/scenario_invoke_models.go
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Expand Up @@ -112,7 +112,7 @@ func (scenario InvokeModelsScenario) InvokeTitanImage(ctx context.Context, promp
if err != nil {
panic(err)
}
imagePath := saveImage(base64ImageData, "amazon.titan-image-generator-v1")
imagePath := saveImage(base64ImageData, "amazon.titan-image-generator-v2")
fmt.Printf("The generated image has been saved to %s\n", imagePath)
}

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2 changes: 1 addition & 1 deletion gov2/bedrock-runtime/stubs/invoke_model_stubs.go
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Expand Up @@ -47,7 +47,7 @@ func StubInvokeModel(params StubInvokeModelParams) testtools.Stub {
// OperationName: "InvokeModel",
// Input: &bedrockruntime.InvokeModelInput{
// Body: requestBytes,
// ModelId: aws.String("amazon.titan-image-generator-v1"),
// ModelId: aws.String("amazon.titan-image-generator-v2:0"),
// ContentType: aws.String("application/json"),
// },
// Output: &bedrockruntime.InvokeModelOutput{
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4 changes: 2 additions & 2 deletions ...runtime/src/main/java/com/example/bedrockruntime/models/amazonTitanImage/InvokeModel.java
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Expand Up @@ -30,8 +30,8 @@ public static String invokeModel() {
.region(Region.US_EAST_1)
.build();

// Set the model ID, e.g., Titan Image G1.
var modelId = "amazon.titan-image-generator-v1";
// Set the model ID, e.g., Titan Image G2.
var modelId = "amazon.titan-image-generator-v2:0";

// The InvokeModel API uses the model's native payload.
// Learn more about the available inference parameters and response fields at:
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2 changes: 1 addition & 1 deletion php/example_code/bedrock-runtime/BedrockRuntimeService.php
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Expand Up @@ -109,7 +109,7 @@ public function invokeTitanImage(string $prompt, int $seed)

$base64_image_data = "";
try {
$modelId = 'amazon.titan-image-generator-v1';
$modelId = 'amazon.titan-image-generator-v2:0';
$request = json_encode([
'taskType' => 'TEXT_IMAGE',
'textToImageParams' => [
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2 changes: 1 addition & 1 deletion php/example_code/bedrock-runtime/GettingStartedWithBedrockRuntime.php
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Expand Up @@ -37,7 +37,7 @@ public function runExample()
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');
$image_path = $this->saveImage($base64, 'amazon.titan-image-generator-v2');
echo "The generated image has been saved to $image_path";
}

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2 changes: 1 addition & 1 deletion python/example_code/bedrock-runtime/models/amazon_titan_image_generator/invoke_model.py
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Expand Up @@ -14,7 +14,7 @@
client = boto3.client("bedrock-runtime", region_name="us-east-1")

# Set the model ID, e.g., Titan Image Generator G1.
model_id = "amazon.titan-image-generator-v1"
model_id = "amazon.titan-image-generator-v2:0"

# Define the image generation prompt for the model.
prompt = "A stylized picture of a cute old steampunk robot."
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2 changes: 1 addition & 1 deletion python/test_tools/bedrock_runtime_stubber.py
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Expand Up @@ -150,7 +150,7 @@ def stub_invoke_stable_diffusion(self, prompt, style_preset, seed, error_code=No

def stub_invoke_titan_image(self, prompt, seed, error_code=None):
expected_params = {
"modelId": "amazon.titan-image-generator-v1",
"modelId": "amazon.titan-image-generator-v2:0",
"body": json.dumps(
{
"taskType": "TEXT_IMAGE",
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