fix(cli): align wide and combining Unicode cost labels

litellm/proxy/client/cli/commands/statusline_script.py

@@ -28,6 +28,7 @@ import os
 import sys
 import tempfile
 import time
+import unicodedata
 import urllib.error
 import urllib.request
 from collections.abc import Callable, Mapping
@@ -301,6 +302,14 @@ def _bar(fraction: float, color: str, width: int, use_color: bool) -> str:
     return f"{color}{BAR_FULL * filled}{DIM}{BAR_EMPTY * (width - filled)}{RESET}"
 
 
+def _display_width(label: str) -> int:
+    return sum(
+        2 if unicodedata.east_asian_width(character) in ("W", "F") else 1
+        for character in label
+        if unicodedata.category(character) not in ("Mn", "Me")
+    )
+
+
 def render(model: str, session: Session | None, config_dir: Path, use_color: bool, bar_width: int = BAR_WIDTH) -> str:
     def paint(code: str, text: str) -> str:
         return f"{code}{text}{RESET}" if use_color else text
@@ -315,13 +324,14 @@ def render(model: str, session: Session | None, config_dir: Path, use_color: boo
     pct: Final = (session.baseline_spend - session.spend) / session.baseline_spend * 100
     delta: Final = paint(LITELLM_COLOR, f"{'-' if pct >= 0 else '+'}{abs(round(pct))}% vs {reference}")
     peak: Final = max(session.spend, session.baseline_spend)
-    label_width: Final = max(len(session.router_name), len(reference))
+    label_width: Final = max(_display_width(session.router_name), _display_width(reference))
     rows: Final = (
         (session.router_name, session.spend, LITELLM_COLOR),
         (reference, session.baseline_spend, BASELINE_COLOR),
     )
     lines: Final = (
-        f"{paint(DIM, label.ljust(label_width))} {_bar(amount / peak, color, bar_width, use_color)} "
+        f"{paint(DIM, label + ' ' * (label_width - _display_width(label)))} "
+        f"{_bar(amount / peak, color, bar_width, use_color)} "
         f"{paint(DIM, f'${amount:.2f}')}"
         for label, amount, color in rows
     )

tests/test_litellm/proxy/client/cli/test_statusline_script.py

@@ -265,6 +265,39 @@ class TestRender:
             "Claude Opus 5            ██████████ $0.38",
         ]
 
+    @pytest.mark.parametrize(
+        ("router_name", "baseline_name", "router_padding", "baseline_padding"),
+        (
+            ("路由-router", "Claude Opus 5", 3, 1),
+            ("智能模型路由器", "Claude Opus 5", 1, 2),
+            ("ＡＢＣ-router", "Claude Opus 5", 1, 1),
+            ("cafe\u0301-router", "Claude Opus 5", 3, 1),
+            ("a\u20dd-router", "Claude Opus 5", 6, 1),
+            ("カ\u3099-router", "Claude Opus 5", 5, 1),
+            ("auto", "基準モデル", 7, 1),
+            ("auto", "cafe\u0301", 1, 1),
+        ),
+    )
+    @pytest.mark.parametrize("use_color", (False, True))
+    def test_unicode_labels_align_cost_bars_by_terminal_columns(
+        self,
+        config_dir: Path,
+        router_name: str,
+        baseline_name: str,
+        router_padding: int,
+        baseline_padding: int,
+        use_color: bool,
+    ) -> None:
+        (config_dir / "cache" / "gateway-models.json").write_text(
+            json.dumps({"models": [{"id": "claude-opus-5", "display_name": baseline_name}]})
+        )
+        session: Final = RECORDED._replace(router_name=router_name)
+        text: Final = ANSI.sub("", render("claude-sonnet-5", session, config_dir, use_color, bar_width=10))
+        assert text.splitlines()[1:] == [
+            f"{router_name}{' ' * router_padding}████░░░░░░ $0.14",
+            f"{baseline_name}{' ' * baseline_padding}██████████ $0.38",
+        ]
+
     def test_control_characters_in_any_externally_sourced_label_never_reach_the_terminal(self, tmp_path, config_dir):
         # The transcript, the proxy payload and Claude Code's model cache all feed labels straight into a
         # terminal, and none is under this script's control. Only the control bytes are dropped (ESC, BEL,