microsoft/semantic-kernel · error · ValueError

Model ID {model_id} does not contain a valid model provider

Error message

Model ID {model_id} does not contain a valid model provider name.

What it means

Raised by BedrockModelProvider.to_model_provider when none of the known provider substrings ('ai21', 'amazon', 'anthropic', 'cohere', 'meta', 'mistral') appear in the supplied model_id. The connector routes requests to provider-specific builders by matching the provider name inside the model ID string, so an unrecognized ID cannot be routed.

Source

Thrown at python/semantic_kernel/connectors/ai/bedrock/services/model_provider/bedrock_model_provider.py:43

    """Amazon Bedrock Model Provider Enum.

    This list contains the providers of all base models available on Amazon Bedrock.
    """

    AI21LABS = "ai21"
    AMAZON = "amazon"
    ANTHROPIC = "anthropic"
    COHERE = "cohere"
    META = "meta"
    MISTRALAI = "mistral"

    @classmethod
    def to_model_provider(cls, model_id: str) -> "BedrockModelProvider":
        """Convert a model ID to a model provider."""
        try:
            return next(provider for provider in cls if provider.value in model_id)
        except StopIteration:
            raise ValueError(f"Model ID {model_id} does not contain a valid model provider name.")


# region Text Completion


TEXT_COMPLETION_REQUEST_BODY_MAPPING: dict[
    BedrockModelProvider, Callable[[str, BedrockTextPromptExecutionSettings], Any]
] = {
    BedrockModelProvider.AMAZON: bedrock_amazon_titan.get_text_completion_request_body,
    BedrockModelProvider.ANTHROPIC: bedrock_anthropic_claude.get_text_completion_request_body,
    BedrockModelProvider.COHERE: bedrock_cohere.get_text_completion_request_body,
    BedrockModelProvider.AI21LABS: bedrock_ai21_labs.get_text_completion_request_body,
    BedrockModelProvider.META: bedrock_meta_llama.get_text_completion_request_body,
    BedrockModelProvider.MISTRALAI: bedrock_mistralai.get_text_completion_request_body,
}

TEXT_COMPLETION_RESPONSE_MAPPING: dict[BedrockModelProvider, Callable[[dict[str, Any], str], list[TextContent]]] = {
    BedrockModelProvider.AMAZON: bedrock_amazon_titan.parse_text_completion_response,

View on GitHub (pinned to c028a0c7dc)

Solutions

1. Use the full Bedrock model ID including the provider prefix, e.g. 'anthropic.claude-3-5-sonnet-20240620-v1:0', 'amazon.titan-embed-text-v2:0', 'meta.llama3-8b-instruct-v1:0'.
2. If using a cross-region or provisioned inference profile ARN, resolve the underlying base model ID first, or pass an explicit model_provider argument to bypass string matching.
3. If the provider is genuinely new (not in the BedrockModelProvider enum), request a library update; do not edit the enum in a fork unless you own the build.
4. Validate the model_id against your Bedrock account's list of available foundation models before constructing the service.

Example fix

// before
service = BedrockChatCompletion(model_id="claude-3-sonnet")
// after
service = BedrockChatCompletion(model_id="anthropic.claude-3-5-sonnet-20240620-v1:0")

SUPPORTED_PROVIDERS = ("ai21", "amazon", "anthropic", "cohere", "meta", "mistral")

def has_valid_bedrock_provider(model_id: str) -> bool:
    return any(p in model_id for p in SUPPORTED_PROVIDERS)

SUPPORTED_PROVIDERS = ("ai21", "amazon", "anthropic", "cohere", "meta", "mistral")

def is_valid_bedrock_model_id(model_id: object) -> bool:
    return isinstance(model_id, str) and any(p in model_id for p in SUPPORTED_PROVIDERS)

try:
    service = BedrockChatCompletion(model_id=model_id)
except ValueError as e:
    if "does not contain a valid model provider name" in str(e):
        raise ValueError(f"Use a full Bedrock model ID like 'anthropic.claude-3-5-sonnet-...'. Got: {model_id}") from e
    raise

When it happens

Trigger: Any Bedrock text/chat/embedding call that goes through get_*_request_body or parse_*_response without an explicit model_provider argument. Fires for a model_id like 'my-custom-model', 'llama-3-8b' (missing 'meta'), or an ARN/provisioned-model ID that does not contain one of the six provider keywords.

Common situations: User passes a short model alias instead of the full Bedrock model ID (e.g. 'claude-3' instead of 'anthropic.claude-3-sonnet'); using a new provider Bedrock added that SK has not mapped yet; passing an inference-profile ARN; copy-paste typo in the model ID.

Related errors

• The Amazon Bedrock Chat Model ID is missing.
• The Amazon Bedrock Text Model ID is missing.
• The Amazon Bedrock Text Embedding Model ID is missing.
• Unsupported AI21 model: {modelId}
• Unsupported Amazon model: {modelId}

AI-assisted analysis of microsoft/semantic-kernel@c028a0c7dc (2026-08-13). Data as JSON: /api/errors/ea8245fca8df7dbf. Report an issue: GitHub.