diff --git a/docs/swagger.yaml b/docs/swagger.yaml
index 0c64c3c..3f06edf 100644
--- a/docs/swagger.yaml
+++ b/docs/swagger.yaml
@@ -1709,10 +1709,12 @@ paths:
 
         Copilot `trackCounts` includes only non-zero Development, Design,
         Quality Assurance, and Data Science keys. Fulfillment is
-        `COMPLETED / (COMPLETED + CANCELLED*) * 100`; `CANCELLED` and every
-        `CANCELLED_*` status count as cancelled, non-terminal statuses are
-        excluded, a zero denominator returns 0, and the percentage is rounded
-        to two decimal places on a 0-100 scale.
+        `COMPLETED / (COMPLETED + qualifying CANCELLED*) * 100`.
+        `CANCELLED_CLIENT_REQUEST` remains in challenge history and track counts
+        but is excluded from fulfillment because it is not a Copilot failure.
+        Other `CANCELLED` and `CANCELLED_*` statuses count as cancelled,
+        non-terminal statuses are excluded, a zero denominator returns 0, and
+        the percentage is rounded to two decimal places on a 0-100 scale.
 
         Cross-schema special-role queries require the `challenges` and `resources`
         schemas to be co-located in the challenge database, as in the supported
@@ -2842,13 +2844,14 @@ definitions:
         format: int32
         minimum: 0
         description: >
-          Anonymous-visible Copilot challenges in CANCELLED or any CANCELLED_*
-          status.
+          Anonymous-visible Copilot challenges in CANCELLED or CANCELLED_*
+          statuses included as Copilot failures. CANCELLED_CLIENT_REQUEST is
+          excluded.
       total:
         type: integer
         format: int32
         minimum: 0
-        description: Completed plus cancelled terminal challenges.
+        description: Completed plus included cancelled terminal challenges.
       rate:
         type: number
         format: double
@@ -2856,7 +2859,7 @@ definitions:
         maximum: 100
         description: >
           Completed percentage on a 0-100 scale, rounded to two decimals; zero
-          when there are no terminal outcomes.
+          when there are no included terminal outcomes.
   SpecialRoleChallengeDimension:
     type: object
     required:
diff --git a/src/services/SpecialRoleService.ts b/src/services/SpecialRoleService.ts
index 7088ad8..43a9299 100644
--- a/src/services/SpecialRoleService.ts
+++ b/src/services/SpecialRoleService.ts
@@ -17,6 +17,9 @@ const { ChallengesPrisma } = prismaManager
 const COPILOT_ROLE = 'copilot'
 const REVIEWER_ROLE = 'reviewer'
 const SPECIAL_ROLES = [COPILOT_ROLE, REVIEWER_ROLE]
+const FULFILLMENT_EXCLUDED_STATUSES = new Set([
+  'CANCELLED_CLIENT_REQUEST'
+])
 
 const REVIEWER_ROLE_NAMES_LOWER = [
   'iterative reviewer',
@@ -107,12 +110,14 @@ function getProfileTrackKey (track) {
 
 /**
  * Calculate Copilot fulfillment from terminal outcome counts. The percentage
- * is completed divided by completed plus every `CANCELLED`/`CANCELLED_*`
- * status, rounded to two decimal places on a 0-100 scale. It returns zero when
- * no terminal challenge exists and does not raise.
+ * is completed divided by completed plus qualifying `CANCELLED`/
+ * `CANCELLED_*` statuses, rounded to two decimal places on a 0-100 scale.
+ * Client-request cancellations are excluded because they are not Copilot
+ * failures. It returns zero when no included terminal challenge exists and
+ * does not raise.
  * @param {Number} completed number of completed public Copilot challenges
- * @param {Number} cancelled number of cancelled public Copilot challenges
- * @returns {Object} completed, cancelled, terminal total, and percentage rate
+ * @param {Number} cancelled number of included cancelled public Copilot challenges
+ * @returns {Object} completed, cancelled, included terminal total, and rate
  */
 function buildFulfillment (completed, cancelled) {
   const total = completed + cancelled
@@ -266,6 +271,7 @@ async function loadVisibleCopilotMetrics (userId) {
   let cancelled = 0
   _.forEach(rows, row => {
     const challengeCount = Number(row.challengeCount) || 0
+    const status = String(row.status || '')
     const trackKey = getProfileTrackKey({
       track: row.track,
       name: row.trackName,
@@ -274,9 +280,12 @@ async function loadVisibleCopilotMetrics (userId) {
     if (trackKey && challengeCount > 0) {
       trackCounts[trackKey] = (trackCounts[trackKey] || 0) + challengeCount
     }
-    if (row.status === 'COMPLETED') {
+    if (status === 'COMPLETED') {
       completed += challengeCount
-    } else if (String(row.status || '').startsWith('CANCELLED')) {
+    } else if (
+      status.startsWith('CANCELLED') &&
+      !FULFILLMENT_EXCLUDED_STATUSES.has(status)
+    ) {
       cancelled += challengeCount
     }
   })
diff --git a/test/unit/SpecialRoleService.test.js b/test/unit/SpecialRoleService.test.js
index 6c10a15..13d82d4 100644
--- a/test/unit/SpecialRoleService.test.js
+++ b/test/unit/SpecialRoleService.test.js
@@ -297,12 +297,24 @@ describe('special role service unit tests', () => {
     }
   })
 
-  it('getMemberRoleChallenges should return all Copilot rows and aggregate visible terminal metrics', async () => {
+  it('getMemberRoleChallenges should exclude client-request cancellations only from Copilot fulfillment', async () => {
     const { service, restore } = loadSpecialRoleService({
       onResourceQuery: async () => [],
       onChallengeQuery: async (sql) => {
         if (sql.includes('challengeType."name" AS "typeName"')) {
           return [
+            {
+              id: 'copilot-4',
+              name: 'Client-Cancelled Copilot Challenge',
+              status: 'CANCELLED_CLIENT_REQUEST',
+              startDate: new Date('2024-04-01T00:00:00Z'),
+              endDate: new Date('2024-04-02T00:00:00Z'),
+              resourceCreatedAt: new Date('2024-04-01T12:00:00Z'),
+              trackId: 'data-science',
+              trackName: 'Data Science',
+              typeId: 'challenge',
+              typeName: 'Challenge'
+            },
             {
               id: 'copilot-3',
               name: 'Newest Copilot Challenge',
@@ -363,6 +375,13 @@ describe('special role service unit tests', () => {
               trackName: 'Design',
               trackAbbreviation: 'DES',
               challengeCount: 1
+            },
+            {
+              status: 'CANCELLED_CLIENT_REQUEST',
+              track: 'DATA_SCIENCE',
+              trackName: 'Data Science',
+              trackAbbreviation: 'DS',
+              challengeCount: 1
             }
           ]
         }
@@ -373,21 +392,30 @@ describe('special role service unit tests', () => {
     try {
       const result = await service.getMemberRoleChallenges('devtest1400', 'copilot')
 
-      result.total.should.equal(3)
-      result.trackCounts.should.deep.equal({ DEVELOPMENT: 2, DESIGN: 1 })
+      result.total.should.equal(4)
+      result.trackCounts.should.deep.equal({
+        DEVELOPMENT: 2,
+        DESIGN: 1,
+        DATA_SCIENCE: 1
+      })
       result.fulfillment.should.deep.equal({
         completed: 1,
         cancelled: 1,
         total: 2,
         rate: 50
       })
-      result.challenges.should.have.length(3)
+      result.challenges.should.have.length(4)
       result.challenges.map(challenge => challenge.id).should.deep.equal([
+        'copilot-4',
         'copilot-3',
         'copilot-2',
         'copilot-1'
       ])
-      result.challenges[1].should.deep.equal({
+      result.challenges[0].should.include({
+        id: 'copilot-4',
+        status: 'CANCELLED_CLIENT_REQUEST'
+      })
+      result.challenges[2].should.deep.equal({
         id: 'copilot-2',
         name: 'Second Copilot Challenge',
         status: 'CANCELLED_ZERO_SUBMISSIONS',