diff --git a/.changeset/ruby-logs-telemetry-sdk-name.md b/.changeset/ruby-logs-telemetry-sdk-name.md
new file mode 100644
index 0000000..16087ce
--- /dev/null
+++ b/.changeset/ruby-logs-telemetry-sdk-name.md
@@ -0,0 +1,5 @@
+---
+"posthog-rails": patch
+---
+
+Stamp `telemetry.sdk.name = "posthog-ruby"` on forwarded logs so PostHog can attribute log volume to the Ruby SDK. Previously these records carried the OpenTelemetry SDK default (`opentelemetry`), so they could not be split out per-SDK the way the mobile SDKs are.
diff --git a/posthog-rails/lib/posthog/rails/logs/setup.rb b/posthog-rails/lib/posthog/rails/logs/setup.rb
index 27ce5da..0e34690 100644
--- a/posthog-rails/lib/posthog/rails/logs/setup.rb
+++ b/posthog-rails/lib/posthog/rails/logs/setup.rb
@@ -184,6 +184,11 @@ def resource_attributes
             # The posthog-rails name/version travel with each record via the
             # instrumentation scope (see LoggerProvider#logger above).
             {
+              # Identifies these records as the PostHog Ruby SDK so PostHog's usage
+              # report can attribute log volume to Ruby (mirrors posthog-ios/android/
+              # flutter/react-native). Overrides the OpenTelemetry SDK default of
+              # 'opentelemetry'; the posthog-rails integration name stays on the scope.
+              'telemetry.sdk.name' => 'posthog-ruby',
               'service.name' => service_name,
               'deployment.environment' => ::Rails.env.to_s
             }
diff --git a/spec/posthog/rails/logs/setup_spec.rb b/spec/posthog/rails/logs/setup_spec.rb
index ed58042..f1e7d8e 100644
--- a/spec/posthog/rails/logs/setup_spec.rb
+++ b/spec/posthog/rails/logs/setup_spec.rb
@@ -72,6 +72,7 @@
 
     context 'when the OpenTelemetry gems are available' do
       let(:exporter_args) { {} }
+      let(:resource_attrs) { {} }
       let(:otel_logger) { double('otel_logger') }
       let(:provider) { double('provider', add_log_record_processor: nil, logger: otel_logger) }
 
@@ -82,8 +83,12 @@
         resource_class.define_singleton_method(:create) { |attrs| attrs }
 
         provider_double = provider
+        captured_resource = resource_attrs
         provider_class = Class.new
-        provider_class.define_singleton_method(:new) { |**| provider_double }
+        provider_class.define_singleton_method(:new) do |**kwargs|
+          captured_resource.merge!(kwargs[:resource] || {})
+          provider_double
+        end
 
         captured = exporter_args
         exporter_class = Class.new
@@ -111,6 +116,14 @@
         expect(exporter_args[:headers]).to eq('Authorization' => 'Bearer phc_token')
       end
 
+      it 'stamps telemetry.sdk.name so PostHog attributes the records to the Ruby SDK' do
+        described_class.remember_client_options(api_key: 'phc_token', host: 'https://us.i.posthog.com')
+
+        described_class.install
+
+        expect(resource_attrs['telemetry.sdk.name']).to eq('posthog-ruby')
+      end
+
       it 'supports string-keyed init options and strips a trailing slash from the host' do
         described_class.remember_client_options('api_key' => 'phc_token', 'host' => 'https://eu.i.posthog.com/')