diff --git a/scripts/bench_jsonable_encoder.py b/scripts/bench_jsonable_encoder.py
deleted file mode 100644
index f4eadc931d..0000000000
--- a/scripts/bench_jsonable_encoder.py
+++ /dev/null
@@ -1,69 +0,0 @@
-"""
-Benchmark: lazy allowed_keys allocation in jsonable_encoder.
-
-Usage:
-    uv run python scripts/bench_jsonable_encoder.py
-
-Run against both branches to compare:
-    git stash      # unpatched
-    uv run python scripts/bench_jsonable_encoder.py
-    git stash pop  # patched
-    uv run python scripts/bench_jsonable_encoder.py
-
-Reference results (20 rounds x 300 iters, mean, Python 3.12, FastAPI 0.136.1):
-
-    Payload                               mean µs/call    stdev
-    ------------------------------------------------------------
-    small dict (3 keys)          before:      5.37µs      0.95
-                                  after:      4.93µs      0.65   -8.2%
-    large dict (300 items, nested)
-                                 before:  12,158.80µs    557.40
-                                  after:  11,431.07µs    506.29  -6.0%
-"""
-
-import statistics
-import timeit
-from typing import Any
-
-from fastapi.encoders import jsonable_encoder
-
-LARGE_ITEMS: list[dict[str, Any]] = [
-    {
-        "id": i,
-        "name": f"item-{i}",
-        "values": list(range(25)),
-        "meta": {"active": True, "group": i % 10, "tag": f"t{i % 5}"},
-    }
-    for i in range(300)
-]
-LARGE_METADATA: dict[str, Any] = {
-    "source": "benchmark",
-    "version": 1,
-    "flags": {"a": True, "b": False, "c": True},
-    "notes": ["x" * 50, "y" * 50, "z" * 50],
-}
-LARGE_PAYLOAD: dict[str, Any] = {"items": LARGE_ITEMS, "metadata": LARGE_METADATA}
-SMALL_PAYLOAD: dict[str, Any] = {"name": "foo", "value": 123}
-
-ROUNDS = 20
-ITERS = 300
-
-
-def bench(payload: dict[str, Any]) -> tuple[float, float]:
-    times = []
-    for _ in range(ROUNDS):
-        t = timeit.timeit(lambda: jsonable_encoder(payload), number=ITERS)
-        times.append(t / ITERS * 1e6)
-    return statistics.mean(times), statistics.stdev(times)
-
-
-if __name__ == "__main__":
-    print(f"{'Payload':<35} {'mean µs/call':>14} {'stdev':>8}")
-    print("-" * 60)
-    for label, payload in [
-        ("small dict (3 keys)", SMALL_PAYLOAD),
-        ("large dict (300 items, nested)", LARGE_PAYLOAD),
-    ]:
-        mean, sd = bench(payload)
-        print(f"{label:<35} {mean:>12.2f}µs {sd:>6.2f}")
-    print(f"\n({ROUNDS} rounds x {ITERS} iters each)")