diff --git a/services/logs/oas_commit b/services/logs/oas_commit
index c08a6770d..8ae9a8db5 100644
--- a/services/logs/oas_commit
+++ b/services/logs/oas_commit
@@ -1 +1 @@
-4407196dbbef4e53e6798809e856725cbc84ae05
+e9fe931e91e0b8f067d5c12518398a52062ca794
diff --git a/services/logs/v1alphaapi/client.go b/services/logs/v1alphaapi/client.go
index 55ecd19dd..32abc2f39 100644
--- a/services/logs/v1alphaapi/client.go
+++ b/services/logs/v1alphaapi/client.go
@@ -461,6 +461,15 @@ func (c *APIClient) decode(v interface{}, b []byte, contentType string) (err err
 		*s = string(b)
 		return nil
 	}
+	if r, ok := v.(*io.Reader); ok {
+		*r = bytes.NewReader(b)
+		return nil
+	}
+	// Must stay before the JSON branch: json.Unmarshal would base64-decode into *[]byte.
+	if p, ok := v.(*[]byte); ok {
+		*p = b
+		return nil
+	}
 	if f, ok := v.(*os.File); ok {
 		f, err = os.CreateTemp("", "HttpClientFile")
 		if err != nil {
diff --git a/services/logs/v1alphaapi/model_access_token.go b/services/logs/v1alphaapi/model_access_token.go
index 3bcec3867..f1b45bd8d 100644
--- a/services/logs/v1alphaapi/model_access_token.go
+++ b/services/logs/v1alphaapi/model_access_token.go
@@ -28,7 +28,7 @@ type AccessToken struct {
 	// The description of the access token.
 	Description *string `json:"description,omitempty"`
 	// The displayed name of the access token.
-	DisplayName string `json:"displayName" validate:"regexp=^[a-zA-Z][\\\\w -]*$"`
+	DisplayName string `json:"displayName" validate:"regexp=^[a-zA-Z][\\w -]*$"`
 	// Indicates if the access token can expire.
 	Expires bool `json:"expires"`
 	// An auto generated unique id which identifies the access token.
diff --git a/services/logs/v1alphaapi/model_create_access_token_payload.go b/services/logs/v1alphaapi/model_create_access_token_payload.go
index 2875374ce..327e8c0c6 100644
--- a/services/logs/v1alphaapi/model_create_access_token_payload.go
+++ b/services/logs/v1alphaapi/model_create_access_token_payload.go
@@ -23,7 +23,7 @@ type CreateAccessTokenPayload struct {
 	// The description of the access token.
 	Description *string `json:"description,omitempty"`
 	// The displayed name of the access token.
-	DisplayName string `json:"displayName" validate:"regexp=^[a-zA-Z][\\\\w -]*$"`
+	DisplayName string `json:"displayName" validate:"regexp=^[a-zA-Z][\\w -]*$"`
 	// A lifetime period for an access token in days. If unset the token will not expire.
 	Lifetime *int32 `json:"lifetime,omitempty"`
 	// The access permissions granted to the access token.
diff --git a/services/logs/v1alphaapi/model_create_logs_instance_payload.go b/services/logs/v1alphaapi/model_create_logs_instance_payload.go
index 56127e1fa..435acb203 100644
--- a/services/logs/v1alphaapi/model_create_logs_instance_payload.go
+++ b/services/logs/v1alphaapi/model_create_logs_instance_payload.go
@@ -25,7 +25,7 @@ type CreateLogsInstancePayload struct {
 	// The description of the access token.
 	Description *string `json:"description,omitempty"`
 	// The displayed name to distinguish multiple Logs instances.
-	DisplayName string `json:"displayName" validate:"regexp=^[a-zA-Z][\\\\w -]*$"`
+	DisplayName string `json:"displayName" validate:"regexp=^[a-zA-Z][\\w -]*$"`
 	// The log retention time in days.
 	RetentionDays        int32 `json:"retentionDays"`
 	AdditionalProperties map[string]interface{}
diff --git a/services/logs/v1alphaapi/model_logs_instance.go b/services/logs/v1alphaapi/model_logs_instance.go
index b83e21d63..0e898f960 100644
--- a/services/logs/v1alphaapi/model_logs_instance.go
+++ b/services/logs/v1alphaapi/model_logs_instance.go
@@ -30,7 +30,7 @@ type LogsInstance struct {
 	// The description of the Logs instance.
 	Description *string `json:"description,omitempty"`
 	// The displayed name of the Logs instance.
-	DisplayName string `json:"displayName" validate:"regexp=^[a-zA-Z][\\\\w -]*$"`
+	DisplayName string `json:"displayName" validate:"regexp=^[a-zA-Z][\\w -]*$"`
 	// A auto generated unique id which identifies the Logs instance.
 	Id string `json:"id"`
 	// The Logs instance's ingest logs via OTLP URL
diff --git a/services/logs/v1alphaapi/model_update_access_token_payload.go b/services/logs/v1alphaapi/model_update_access_token_payload.go
index a0416caa5..58cc19ae3 100644
--- a/services/logs/v1alphaapi/model_update_access_token_payload.go
+++ b/services/logs/v1alphaapi/model_update_access_token_payload.go
@@ -22,7 +22,7 @@ type UpdateAccessTokenPayload struct {
 	// The description of the access token.
 	Description *string `json:"description,omitempty"`
 	// The displayed name of the access token.
-	DisplayName          *string `json:"displayName,omitempty" validate:"regexp=^[a-zA-Z][\\\\w -]*$"`
+	DisplayName          *string `json:"displayName,omitempty" validate:"regexp=^[a-zA-Z][\\w -]*$"`
 	AdditionalProperties map[string]interface{}
 }
 
diff --git a/services/logs/v1alphaapi/model_update_logs_instance_payload.go b/services/logs/v1alphaapi/model_update_logs_instance_payload.go
index f4c4bfe89..e0cbc51b8 100644
--- a/services/logs/v1alphaapi/model_update_logs_instance_payload.go
+++ b/services/logs/v1alphaapi/model_update_logs_instance_payload.go
@@ -24,7 +24,7 @@ type UpdateLogsInstancePayload struct {
 	// The description of the Logs instance.
 	Description *string `json:"description,omitempty"`
 	// The displayed name to distinguish multiple Logs instances.
-	DisplayName *string `json:"displayName,omitempty" validate:"regexp=^[a-zA-Z][\\\\w -]*$"`
+	DisplayName *string `json:"displayName,omitempty" validate:"regexp=^[a-zA-Z][\\w -]*$"`
 	// The log retention time in days.
 	RetentionDays        *int32 `json:"retentionDays,omitempty"`
 	AdditionalProperties map[string]interface{}
diff --git a/services/logs/v1api/client.go b/services/logs/v1api/client.go
index 4c8754812..801071086 100644
--- a/services/logs/v1api/client.go
+++ b/services/logs/v1api/client.go
@@ -461,6 +461,15 @@ func (c *APIClient) decode(v interface{}, b []byte, contentType string) (err err
 		*s = string(b)
 		return nil
 	}
+	if r, ok := v.(*io.Reader); ok {
+		*r = bytes.NewReader(b)
+		return nil
+	}
+	// Must stay before the JSON branch: json.Unmarshal would base64-decode into *[]byte.
+	if p, ok := v.(*[]byte); ok {
+		*p = b
+		return nil
+	}
 	if f, ok := v.(*os.File); ok {
 		f, err = os.CreateTemp("", "HttpClientFile")
 		if err != nil {
diff --git a/services/logs/v1api/model_access_token.go b/services/logs/v1api/model_access_token.go
index ed184e386..349c32dd8 100644
--- a/services/logs/v1api/model_access_token.go
+++ b/services/logs/v1api/model_access_token.go
@@ -28,7 +28,7 @@ type AccessToken struct {
 	// The description of the access token.
 	Description *string `json:"description,omitempty"`
 	// The displayed name of the access token.
-	DisplayName string `json:"displayName" validate:"regexp=^[a-zA-Z][\\\\w -]*$"`
+	DisplayName string `json:"displayName" validate:"regexp=^[a-zA-Z][\\w -]*$"`
 	// Indicates if the access token can expire.
 	Expires bool `json:"expires"`
 	// An auto generated unique id which identifies the access token.
diff --git a/services/logs/v1api/model_create_access_token_payload.go b/services/logs/v1api/model_create_access_token_payload.go
index 9630d8a46..010f20f36 100644
--- a/services/logs/v1api/model_create_access_token_payload.go
+++ b/services/logs/v1api/model_create_access_token_payload.go
@@ -23,7 +23,7 @@ type CreateAccessTokenPayload struct {
 	// The description of the access token.
 	Description *string `json:"description,omitempty"`
 	// The displayed name of the access token.
-	DisplayName string `json:"displayName" validate:"regexp=^[a-zA-Z][\\\\w -]*$"`
+	DisplayName string `json:"displayName" validate:"regexp=^[a-zA-Z][\\w -]*$"`
 	// A lifetime period for an access token in days. If unset the token will not expire.
 	Lifetime *int32 `json:"lifetime,omitempty"`
 	// The access permissions granted to the access token.
diff --git a/services/logs/v1api/model_create_logs_instance_payload.go b/services/logs/v1api/model_create_logs_instance_payload.go
index 206908ef3..067ad8742 100644
--- a/services/logs/v1api/model_create_logs_instance_payload.go
+++ b/services/logs/v1api/model_create_logs_instance_payload.go
@@ -25,7 +25,7 @@ type CreateLogsInstancePayload struct {
 	// The description of the access token.
 	Description *string `json:"description,omitempty"`
 	// The displayed name to distinguish multiple Logs instances.
-	DisplayName string `json:"displayName" validate:"regexp=^[a-zA-Z][\\\\w -]*$"`
+	DisplayName string `json:"displayName" validate:"regexp=^[a-zA-Z][\\w -]*$"`
 	// The log retention time in days.
 	RetentionDays        int32 `json:"retentionDays"`
 	AdditionalProperties map[string]interface{}
diff --git a/services/logs/v1api/model_logs_instance.go b/services/logs/v1api/model_logs_instance.go
index 360e4fbfa..079849e51 100644
--- a/services/logs/v1api/model_logs_instance.go
+++ b/services/logs/v1api/model_logs_instance.go
@@ -30,7 +30,7 @@ type LogsInstance struct {
 	// The description of the Logs instance.
 	Description *string `json:"description,omitempty"`
 	// The displayed name of the Logs instance.
-	DisplayName string `json:"displayName" validate:"regexp=^[a-zA-Z][\\\\w -]*$"`
+	DisplayName string `json:"displayName" validate:"regexp=^[a-zA-Z][\\w -]*$"`
 	// A auto generated unique id which identifies the Logs instance.
 	Id string `json:"id"`
 	// The Logs instance's ingest logs via OTLP URL
diff --git a/services/logs/v1api/model_update_access_token_payload.go b/services/logs/v1api/model_update_access_token_payload.go
index ef966a135..fb224c2a4 100644
--- a/services/logs/v1api/model_update_access_token_payload.go
+++ b/services/logs/v1api/model_update_access_token_payload.go
@@ -22,7 +22,7 @@ type UpdateAccessTokenPayload struct {
 	// The description of the access token.
 	Description *string `json:"description,omitempty"`
 	// The displayed name of the access token.
-	DisplayName          *string `json:"displayName,omitempty" validate:"regexp=^[a-zA-Z][\\\\w -]*$"`
+	DisplayName          *string `json:"displayName,omitempty" validate:"regexp=^[a-zA-Z][\\w -]*$"`
 	AdditionalProperties map[string]interface{}
 }
 
diff --git a/services/logs/v1api/model_update_logs_instance_payload.go b/services/logs/v1api/model_update_logs_instance_payload.go
index d589408b9..93b73c298 100644
--- a/services/logs/v1api/model_update_logs_instance_payload.go
+++ b/services/logs/v1api/model_update_logs_instance_payload.go
@@ -24,7 +24,7 @@ type UpdateLogsInstancePayload struct {
 	// The description of the Logs instance.
 	Description *string `json:"description,omitempty"`
 	// The displayed name to distinguish multiple Logs instances.
-	DisplayName *string `json:"displayName,omitempty" validate:"regexp=^[a-zA-Z][\\\\w -]*$"`
+	DisplayName *string `json:"displayName,omitempty" validate:"regexp=^[a-zA-Z][\\w -]*$"`
 	// The log retention time in days.
 	RetentionDays        *int32 `json:"retentionDays,omitempty"`
 	AdditionalProperties map[string]interface{}
diff --git a/services/logs/v1betaapi/client.go b/services/logs/v1betaapi/client.go
index 386ce585b..cb9f0f1a8 100644
--- a/services/logs/v1betaapi/client.go
+++ b/services/logs/v1betaapi/client.go
@@ -461,6 +461,15 @@ func (c *APIClient) decode(v interface{}, b []byte, contentType string) (err err
 		*s = string(b)
 		return nil
 	}
+	if r, ok := v.(*io.Reader); ok {
+		*r = bytes.NewReader(b)
+		return nil
+	}
+	// Must stay before the JSON branch: json.Unmarshal would base64-decode into *[]byte.
+	if p, ok := v.(*[]byte); ok {
+		*p = b
+		return nil
+	}
 	if f, ok := v.(*os.File); ok {
 		f, err = os.CreateTemp("", "HttpClientFile")
 		if err != nil {
diff --git a/services/logs/v1betaapi/model_access_token.go b/services/logs/v1betaapi/model_access_token.go
index 540b9ecda..caafe3ad5 100644
--- a/services/logs/v1betaapi/model_access_token.go
+++ b/services/logs/v1betaapi/model_access_token.go
@@ -28,7 +28,7 @@ type AccessToken struct {
 	// The description of the access token.
 	Description *string `json:"description,omitempty"`
 	// The displayed name of the access token.
-	DisplayName string `json:"displayName" validate:"regexp=^[a-zA-Z][\\\\w -]*$"`
+	DisplayName string `json:"displayName" validate:"regexp=^[a-zA-Z][\\w -]*$"`
 	// Indicates if the access token can expire.
 	Expires bool `json:"expires"`
 	// An auto generated unique id which identifies the access token.
diff --git a/services/logs/v1betaapi/model_create_access_token_payload.go b/services/logs/v1betaapi/model_create_access_token_payload.go
index a2e69efa4..ebd7578fd 100644
--- a/services/logs/v1betaapi/model_create_access_token_payload.go
+++ b/services/logs/v1betaapi/model_create_access_token_payload.go
@@ -23,7 +23,7 @@ type CreateAccessTokenPayload struct {
 	// The description of the access token.
 	Description *string `json:"description,omitempty"`
 	// The displayed name of the access token.
-	DisplayName string `json:"displayName" validate:"regexp=^[a-zA-Z][\\\\w -]*$"`
+	DisplayName string `json:"displayName" validate:"regexp=^[a-zA-Z][\\w -]*$"`
 	// A lifetime period for an access token in days. If unset the token will not expire.
 	Lifetime *int32 `json:"lifetime,omitempty"`
 	// The access permissions granted to the access token.
diff --git a/services/logs/v1betaapi/model_create_logs_instance_payload.go b/services/logs/v1betaapi/model_create_logs_instance_payload.go
index 06c83e7fa..5546c6ff5 100644
--- a/services/logs/v1betaapi/model_create_logs_instance_payload.go
+++ b/services/logs/v1betaapi/model_create_logs_instance_payload.go
@@ -25,7 +25,7 @@ type CreateLogsInstancePayload struct {
 	// The description of the access token.
 	Description *string `json:"description,omitempty"`
 	// The displayed name to distinguish multiple Logs instances.
-	DisplayName string `json:"displayName" validate:"regexp=^[a-zA-Z][\\\\w -]*$"`
+	DisplayName string `json:"displayName" validate:"regexp=^[a-zA-Z][\\w -]*$"`
 	// The log retention time in days.
 	RetentionDays        int32 `json:"retentionDays"`
 	AdditionalProperties map[string]interface{}
diff --git a/services/logs/v1betaapi/model_logs_instance.go b/services/logs/v1betaapi/model_logs_instance.go
index 068c43965..22363b522 100644
--- a/services/logs/v1betaapi/model_logs_instance.go
+++ b/services/logs/v1betaapi/model_logs_instance.go
@@ -30,7 +30,7 @@ type LogsInstance struct {
 	// The description of the Logs instance.
 	Description *string `json:"description,omitempty"`
 	// The displayed name of the Logs instance.
-	DisplayName string `json:"displayName" validate:"regexp=^[a-zA-Z][\\\\w -]*$"`
+	DisplayName string `json:"displayName" validate:"regexp=^[a-zA-Z][\\w -]*$"`
 	// A auto generated unique id which identifies the Logs instance.
 	Id string `json:"id"`
 	// The Logs instance's ingest logs via OTLP URL
diff --git a/services/logs/v1betaapi/model_update_access_token_payload.go b/services/logs/v1betaapi/model_update_access_token_payload.go
index 84f7a19ac..546a68481 100644
--- a/services/logs/v1betaapi/model_update_access_token_payload.go
+++ b/services/logs/v1betaapi/model_update_access_token_payload.go
@@ -22,7 +22,7 @@ type UpdateAccessTokenPayload struct {
 	// The description of the access token.
 	Description *string `json:"description,omitempty"`
 	// The displayed name of the access token.
-	DisplayName          *string `json:"displayName,omitempty" validate:"regexp=^[a-zA-Z][\\\\w -]*$"`
+	DisplayName          *string `json:"displayName,omitempty" validate:"regexp=^[a-zA-Z][\\w -]*$"`
 	AdditionalProperties map[string]interface{}
 }
 
diff --git a/services/logs/v1betaapi/model_update_logs_instance_payload.go b/services/logs/v1betaapi/model_update_logs_instance_payload.go
index 3b9aa529c..1837150e2 100644
--- a/services/logs/v1betaapi/model_update_logs_instance_payload.go
+++ b/services/logs/v1betaapi/model_update_logs_instance_payload.go
@@ -24,7 +24,7 @@ type UpdateLogsInstancePayload struct {
 	// The description of the Logs instance.
 	Description *string `json:"description,omitempty"`
 	// The displayed name to distinguish multiple Logs instances.
-	DisplayName *string `json:"displayName,omitempty" validate:"regexp=^[a-zA-Z][\\\\w -]*$"`
+	DisplayName *string `json:"displayName,omitempty" validate:"regexp=^[a-zA-Z][\\w -]*$"`
 	// The log retention time in days.
 	RetentionDays        *int32 `json:"retentionDays,omitempty"`
 	AdditionalProperties map[string]interface{}