diff --git a/packages/database/src/analyze-performance.ts b/packages/database/src/analyze-performance.ts
index b0079628b..c456eeffa 100644
--- a/packages/database/src/analyze-performance.ts
+++ b/packages/database/src/analyze-performance.ts
@@ -79,7 +79,13 @@ function analyzeQueryPerformance(db: Database) {
 				)
 				SELECT response_time_ms as p95_response_time
 				FROM ordered_times
-				WHERE row_num = CAST(CEIL(total_count * 0.95) AS INTEGER)
+				-- CEIL()/FLOOR() are not builtin SQLite functions in bun:sqlite; portable
+				-- ceil(x) for non-negative x = trunc(x) + (x > trunc(x)) (see analytics.repository.ts
+				-- for the same fix applied to the production query).
+				WHERE row_num = (
+					CAST(total_count * 0.95 AS INTEGER) +
+					(total_count * 0.95 > CAST(total_count * 0.95 AS INTEGER))
+				)
 				LIMIT 1
 			`,
 			params: ["claude-3-5-sonnet-20241022"],
diff --git a/packages/database/src/repositories/analytics.repository.ts b/packages/database/src/repositories/analytics.repository.ts
index f445da278..d148e3d5f 100644
--- a/packages/database/src/repositories/analytics.repository.ts
+++ b/packages/database/src/repositories/analytics.repository.ts
@@ -208,7 +208,16 @@ export class AnalyticsRepository extends BaseRepository<never> {
 				FROM model_stats ms
 				LEFT JOIN ranked_times rt
 					ON rt.model = ms.model
-					AND rt.row_num = CAST(CEIL(rt.total_count * 0.95) AS INTEGER)
+					-- p95 rank = ceil(total_count * 0.95). CEIL()/FLOOR() are not builtin SQLite
+					-- functions unless compiled with SQLITE_ENABLE_MATH_FUNCTIONS (not available in
+					-- bun:sqlite), so ceil(x) for non-negative x is computed portably as
+					-- trunc(x) + (x > trunc(x)) — CAST(x AS INTEGER) truncates toward zero, which
+					-- equals floor(x) for any x >= 0 (total_count is always a positive COUNT(*), so
+					-- this is always non-negative).
+					AND rt.row_num = (
+						CAST(rt.total_count * 0.95 AS INTEGER) +
+						(rt.total_count * 0.95 > CAST(rt.total_count * 0.95 AS INTEGER))
+					)
 				ORDER BY ms.total_requests DESC
 			`,
 			[...queryParams, ...queryParams],