diff --git a/errors.go b/errors.go
index 5a86b256d27ba64dd37144a72e2cd939ef1d2ca2..1c77c1f709bb2d9eae94074006568e3c38759305 100644
--- a/errors.go
+++ b/errors.go
@@ -11,7 +11,6 @@ var markerSymbol = "fantasy.error"
 
 // AIError is a custom error type for AI SDK related errors.
 type AIError struct {
-	Name    string
 	Message string
 	Cause   error
 	marker  string
@@ -28,9 +27,8 @@ func (e *AIError) Unwrap() error {
 }
 
 // NewAIError creates a new AI SDK Error.
-func NewAIError(name, message string, cause error) *AIError {
+func NewAIError(message string, cause error) *AIError {
 	return &AIError{
-		Name:    name,
 		Message: message,
 		Cause:   cause,
 		marker:  markerSymbol,
@@ -61,7 +59,7 @@ func NewAPICallError(message, url string, requestDump string, statusCode int, re
 	}
 
 	return &APICallError{
-		AIError:         NewAIError("AI_APICallError", message, cause),
+		AIError:         NewAIError(message, cause),
 		URL:             url,
 		RequestDump:     requestDump,
 		StatusCode:      statusCode,
@@ -80,7 +78,7 @@ type InvalidArgumentError struct {
 // NewInvalidArgumentError creates a new invalid argument error.
 func NewInvalidArgumentError(argument, message string, cause error) *InvalidArgumentError {
 	return &InvalidArgumentError{
-		AIError:  NewAIError("AI_InvalidArgumentError", message, cause),
+		AIError:  NewAIError(message, cause),
 		Argument: argument,
 	}
 }
@@ -94,7 +92,7 @@ type InvalidPromptError struct {
 // NewInvalidPromptError creates a new invalid prompt error.
 func NewInvalidPromptError(prompt any, message string, cause error) *InvalidPromptError {
 	return &InvalidPromptError{
-		AIError: NewAIError("AI_InvalidPromptError", fmt.Sprintf("Invalid prompt: %s", message), cause),
+		AIError: NewAIError(fmt.Sprintf("Invalid prompt: %s", message), cause),
 		Prompt:  prompt,
 	}
 }
@@ -112,7 +110,7 @@ func NewInvalidResponseDataError(data any, message string) *InvalidResponseDataE
 		message = fmt.Sprintf("Invalid response data: %s.", string(dataJSON))
 	}
 	return &InvalidResponseDataError{
-		AIError: NewAIError("AI_InvalidResponseDataError", message, nil),
+		AIError: NewAIError(message, nil),
 		Data:    data,
 	}
 }
@@ -129,7 +127,7 @@ func NewUnsupportedFunctionalityError(functionality, message string) *Unsupporte
 		message = fmt.Sprintf("'%s' functionality not supported.", functionality)
 	}
 	return &UnsupportedFunctionalityError{
-		AIError:       NewAIError("AI_UnsupportedFunctionalityError", message, nil),
+		AIError:       NewAIError(message, nil),
 		Functionality: functionality,
 	}
 }
diff --git a/providers/openaicompat/language_model_hooks.go b/providers/openaicompat/language_model_hooks.go
index 5fa06818531331feb18b90d88f1c1948b1b961e8..f9f16b33f7cc97d46d059b444b9edf07d5ed28e0 100644
--- a/providers/openaicompat/language_model_hooks.go
+++ b/providers/openaicompat/language_model_hooks.go
@@ -86,7 +86,7 @@ func StreamExtraFunc(chunk openaisdk.ChatCompletionChunk, yield func(fantasy.Str
 		if err != nil {
 			yield(fantasy.StreamPart{
 				Type:  fantasy.StreamPartTypeError,
-				Error: fantasy.NewAIError("Unexpected", "error unmarshalling delta", err),
+				Error: fantasy.NewAIError("error unmarshalling delta", err),
 			})
 			return ctx, false
 		}
diff --git a/providers/openrouter/language_model_hooks.go b/providers/openrouter/language_model_hooks.go
index 60488360bd2a7d07175c2a2a073df4171ebf850f..59a1935be43a96e297c9f590b6f844bba2388632 100644
--- a/providers/openrouter/language_model_hooks.go
+++ b/providers/openrouter/language_model_hooks.go
@@ -180,7 +180,7 @@ func languageModelStreamExtra(chunk openaisdk.ChatCompletionChunk, yield func(fa
 	if err != nil {
 		yield(fantasy.StreamPart{
 			Type:  fantasy.StreamPartTypeError,
-			Error: fantasy.NewAIError("Unexpected", "error unmarshalling delta", err),
+			Error: fantasy.NewAIError("error unmarshalling delta", err),
 		})
 		return ctx, false
 	}
diff --git a/retry.go b/retry.go
index 0908bb7a5535ed435ad74c18a8fc241791e28450..4ef40d71361953837c718434559dc1a0df94c91e 100644
--- a/retry.go
+++ b/retry.go
@@ -34,7 +34,7 @@ type RetryError struct {
 // NewRetryError creates a new retry error.
 func NewRetryError(message string, reason RetryReason, errors []error) *RetryError {
 	return &RetryError{
-		AIError: NewAIError("AI_RetryError", message, nil),
+		AIError: NewAIError(message, nil),
 		Reason:  reason,
 		Errors:  errors,
 	}