diff --git a/src/experiments/ab-tests.ts b/src/experiments/ab-tests.ts
index 84edbfad2..7702fe68d 100644
--- a/src/experiments/ab-tests.ts
+++ b/src/experiments/ab-tests.ts
@@ -2,6 +2,7 @@ import type { ABTest } from '@guardian/ab-core';
 import { gpidPrebidAdUnits } from './tests/gpid-prebid';
 import { mpuWhenNoEpic } from './tests/mpu-when-no-epic';
 import { optOutFrequencyCap } from './tests/opt-out-frequency-cap';
+import { prebidKeywords } from './tests/prebid-keywords';
 import { regionSpecificPrebid } from './tests/region-specific-prebid';
 
 /**
@@ -15,4 +16,5 @@ export const concurrentTests: ABTest[] = [
 	optOutFrequencyCap,
 	gpidPrebidAdUnits,
 	regionSpecificPrebid,
+	prebidKeywords,
 ];
diff --git a/src/experiments/tests/prebid-keywords.ts b/src/experiments/tests/prebid-keywords.ts
new file mode 100644
index 000000000..442f664b2
--- /dev/null
+++ b/src/experiments/tests/prebid-keywords.ts
@@ -0,0 +1,29 @@
+import type { ABTest } from '@guardian/ab-core';
+
+export const prebidKeywords: ABTest = {
+	id: 'PrebidKeywords',
+	author: '@commercial-dev',
+	start: '2025-01-14',
+	expiry: '2025-01-31',
+	audience: 50 / 100,
+	audienceOffset: 20 / 100,
+	audienceCriteria: '',
+	successMeasure: '',
+	description:
+		'Test if adding keywords to our Prebid config affects revenue.',
+	variants: [
+		{
+			id: 'control',
+			test: (): void => {
+				/* no-op */
+			},
+		},
+		{
+			id: 'variant',
+			test: (): void => {
+				/* no-op */
+			},
+		},
+	],
+	canRun: () => true,
+};
diff --git a/src/lib/header-bidding/prebid/prebid.ts b/src/lib/header-bidding/prebid/prebid.ts
index b88eb535d..7a082f432 100644
--- a/src/lib/header-bidding/prebid/prebid.ts
+++ b/src/lib/header-bidding/prebid/prebid.ts
@@ -10,6 +10,7 @@ import type { PageTargeting } from '../../../core/targeting/build-page-targeting
 import type { Advert } from '../../../define/Advert';
 import { getParticipations, isUserInVariant } from '../../../experiments/ab';
 import { gpidPrebidAdUnits } from '../../../experiments/tests/gpid-prebid';
+import { prebidKeywords } from '../../../experiments/tests/prebid-keywords';
 import { getAdvertById } from '../../dfp/get-advert-by-id';
 import { isUserLoggedInOktaRefactor } from '../../identity/api';
 import { getPageTargeting } from '../../page-targeting';
@@ -88,6 +89,11 @@ type PbjsConfig = {
 	timeoutBuffer?: number;
 	priceGranularity: PrebidPriceGranularity;
 	userSync: UserSync;
+	ortb2?: {
+		site: {
+			keywords: string;
+		};
+	};
 	consentManagement?: ConsentManagement;
 	realTimeData?: unknown;
 	criteo?: {
@@ -364,6 +370,17 @@ const initialise = (
 		},
 	);
 
+	const shouldIncludeKeywords = isUserInVariant(prebidKeywords, 'variant');
+	const keywords = window.guardian.config.page.keywords;
+
+	if (shouldIncludeKeywords) {
+		pbjsConfig.ortb2 = {
+			site: {
+				keywords,
+			},
+		};
+	}
+
 	window.pbjs.bidderSettings = {};
 
 	if (window.guardian.config.switches.consentManagement) {