diff --git a/assets/configure_mykey.py b/assets/configure_mykey.py
index b9ed19d7e..de685e6cc 100644
--- a/assets/configure_mykey.py
+++ b/assets/configure_mykey.py
@@ -90,6 +90,7 @@
             'name': 'deepseek', 'apikey': 'sk-<your-deepseek-key>',
             'apibase': 'https://api.deepseek.com', 'model': 'deepseek-v4-pro',
             'api_mode': 'chat_completions', 'reasoning_effort': 'high',
+            'context_win': 1000000, 'max_tokens': 384000,
         },
         'key_hint': '在 https://platform.deepseek.com/api_keys 获取',
         'model_choices': ['deepseek-v4-pro', 'deepseek-v4-flash'],
@@ -266,6 +267,7 @@
             'apibase': 'https://api.xiaomimimo.com/v1',
             'model': 'mimo-v2.5-pro',
             'api_mode': 'chat_completions',
+            'context_win': 1000000, 'max_tokens': 128000,
         },
         'key_hint': '在 https://x.xiaomi.com/ 获取 API Key',
         'model_choices': ['mimo-v2.5-pro', 'mimo-v2-flash'],
diff --git a/frontends/cost_tracker.py b/frontends/cost_tracker.py
index 744258982..d322f6533 100644
--- a/frontends/cost_tracker.py
+++ b/frontends/cost_tracker.py
@@ -39,15 +39,15 @@ def elapsed_seconds(self) -> float:
         return max(0.0, time.time() - self.started_at)
 
 
-# GA's real context budget lives on `BaseSession.context_win` (chars). The
-# trim trigger is `context_win * 3` (see llmcore.trim_messages_history), so
-# `/cost` compares actual-history chars against that cap for consistent units.
+# GA's real context budget lives on `BaseSession.context_win` (chars).
+# `/cost` displays this value directly so users see the actual context window.
 def context_window_chars(backend) -> int:
-    """`context_win * 3` — the char cap before `trim_messages_history` kicks
-    in. Reads dynamically so a `mykey.py` override propagates. Returns 0 on
-    bad/missing backend so the caller can hide the row."""
+    """Returns the actual context_win (no multiplier). The internal trim
+    trigger is `context_win * 3` (see llmcore.trim_messages_history), but the
+    display should show the real model capacity. Returns 0 on bad/missing
+    backend so the caller can hide the row."""
     try:
-        return int(getattr(backend, 'context_win', 0)) * 3
+        return int(getattr(backend, 'context_win', 0))
     except (TypeError, ValueError):
         return 0
 
diff --git a/frontends/tui_v3.py b/frontends/tui_v3.py
index 0684d538d..f046dc349 100644
--- a/frontends/tui_v3.py
+++ b/frontends/tui_v3.py
@@ -2333,7 +2333,7 @@ def _indent_rows(rows: list[str], width: int) -> list[str]:
 
 
 def _cost_str(agent) -> str:
-    """Context-window usage view (cc/v2 style): used / cap of context_win*3."""
+    """Context-window usage view (cc/v2 style): used / cap of context_win."""
     try:
         from frontends import cost_tracker
         be = agent.llmclient.backend
@@ -4478,8 +4478,8 @@ def _cmd(self, raw: str) -> None:
             try:
                 from frontends import cost_tracker as _ct
                 cap = _ct.context_window_chars(be) if be is not None else 0
-                used = _ct.context_chars_used(be) if be is not None else 0
-                ctx_use = _t('status.ctx.fmt', used=used, cap=cap * 3) if cap else _t('status.ctx.unknown')
+                used = _ct.current_input_chars(be) if be is not None else 0
+                ctx_use = _t('status.ctx.fmt', used=used, cap=cap) if cap else _t('status.ctx.unknown')
             except Exception:
                 ctx_use = _t('status.ctx.unknown')
             cwd = os.getcwd().replace(os.path.expanduser('~'), '~')
diff --git a/llmcore.py b/llmcore.py
index cc9f34a7f..f0f317a60 100644
--- a/llmcore.py
+++ b/llmcore.py
@@ -530,7 +530,7 @@ def __init__(self, cfg):
         self.model = cfg.get('model', '')
         default_context_win = 30000
         if 'deepseek' in self.model.lower():
-            default_context_win = 70000; self.cut_msg_interval = 25; self.trim_keep_rate = 0.3
+            default_context_win = 1000000; self.cut_msg_interval = 25; self.trim_keep_rate = 0.3
         self.context_win = cfg.get('context_win', default_context_win)
         self.history = []; self.lock = threading.Lock(); self.system = ""
         self.name = cfg.get('name', self.model)