diff --git a/backend/open_webui/migrations/versions/240e45fa2f01_add_precharge_fields.py b/backend/open_webui/migrations/versions/240e45fa2f01_add_precharge_fields.py
new file mode 100644
index 0000000000..f30a333b8f
--- /dev/null
+++ b/backend/open_webui/migrations/versions/240e45fa2f01_add_precharge_fields.py
@@ -0,0 +1,72 @@
+"""Add precharge fields to billing_log
+
+Revision ID: 240e45fa2f01
+Revises: f8c9d0e4a3b2
+Create Date: 2025-12-06 18:00:00.000000
+
+添加预扣费相关字段到billing_log表：
+- precharge_id: 预扣费事务ID（UUID）
+- status: 记录状态（precharge | settled | refunded）
+- estimated_tokens: 预估tokens总数
+- refund_amount: 退款金额（毫）
+"""
+
+from alembic import op
+import sqlalchemy as sa
+
+
+revision = "240e45fa2f01"
+down_revision = "f8c9d0e4a3b2"
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    """升级数据库：添加预扣费字段"""
+    connection = op.get_bind()
+    is_sqlite = connection.dialect.name == "sqlite"
+
+    if is_sqlite:
+        # SQLite: 使用batch模式
+        with op.batch_alter_table("billing_log") as batch_op:
+            batch_op.add_column(sa.Column("precharge_id", sa.String(), nullable=True))
+            batch_op.add_column(
+                sa.Column("status", sa.String(20), nullable=True, server_default="settled")
+            )
+            batch_op.add_column(sa.Column("estimated_tokens", sa.Integer(), nullable=True))
+            batch_op.add_column(sa.Column("refund_amount", sa.Integer(), nullable=True))
+            batch_op.create_index("ix_billing_log_precharge_id", ["precharge_id"])
+    else:
+        # PostgreSQL: 直接操作
+        op.add_column("billing_log", sa.Column("precharge_id", sa.String(), nullable=True))
+        op.add_column(
+            "billing_log",
+            sa.Column("status", sa.String(20), nullable=True, server_default="settled"),
+        )
+        op.add_column(
+            "billing_log", sa.Column("estimated_tokens", sa.Integer(), nullable=True)
+        )
+        op.add_column(
+            "billing_log", sa.Column("refund_amount", sa.Integer(), nullable=True)
+        )
+        op.create_index("ix_billing_log_precharge_id", "billing_log", ["precharge_id"])
+
+
+def downgrade():
+    """降级数据库：删除预扣费字段"""
+    connection = op.get_bind()
+    is_sqlite = connection.dialect.name == "sqlite"
+
+    if is_sqlite:
+        with op.batch_alter_table("billing_log") as batch_op:
+            batch_op.drop_index("ix_billing_log_precharge_id")
+            batch_op.drop_column("refund_amount")
+            batch_op.drop_column("estimated_tokens")
+            batch_op.drop_column("status")
+            batch_op.drop_column("precharge_id")
+    else:
+        op.drop_index("ix_billing_log_precharge_id", table_name="billing_log")
+        op.drop_column("billing_log", "refund_amount")
+        op.drop_column("billing_log", "estimated_tokens")
+        op.drop_column("billing_log", "status")
+        op.drop_column("billing_log", "precharge_id")
diff --git a/backend/open_webui/migrations/versions/607801a77d0d_merge_billing_and_reply_to_heads.py b/backend/open_webui/migrations/versions/607801a77d0d_merge_billing_and_reply_to_heads.py
new file mode 100644
index 0000000000..d5fdea9530
--- /dev/null
+++ b/backend/open_webui/migrations/versions/607801a77d0d_merge_billing_and_reply_to_heads.py
@@ -0,0 +1,27 @@
+"""merge billing and reply_to heads
+
+Revision ID: 607801a77d0d
+Revises: a5c220713937, e5f8a9b3c2d1
+Create Date: 2025-12-05 03:12:14.859612
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+import open_webui.internal.db
+
+
+# revision identifiers, used by Alembic.
+revision: str = '607801a77d0d'
+down_revision: Union[str, None] = ('a5c220713937', 'e5f8a9b3c2d1')
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    pass
+
+
+def downgrade() -> None:
+    pass
diff --git a/backend/open_webui/migrations/versions/e5f8a9b3c2d1_add_billing_system.py b/backend/open_webui/migrations/versions/e5f8a9b3c2d1_add_billing_system.py
new file mode 100644
index 0000000000..dfeee79bc8
--- /dev/null
+++ b/backend/open_webui/migrations/versions/e5f8a9b3c2d1_add_billing_system.py
@@ -0,0 +1,176 @@
+"""Add billing system
+
+Revision ID: e5f8a9b3c2d1
+Revises: d31026856c01
+Create Date: 2025-12-05 10:00:00.000000
+
+添加计费模块相关表和字段：
+- user 表新增 balance, total_consumed, billing_status 字段
+- 新增 model_pricing 表（模型定价）
+- 新增 billing_log 表（计费日志）
+- 新增 recharge_log 表（充值日志）
+"""
+
+from alembic import op
+import sqlalchemy as sa
+from sqlalchemy.dialects import postgresql
+
+revision = "e5f8a9b3c2d1"
+down_revision = "d31026856c01"
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    """升级数据库：添加计费系统"""
+    # 检查数据库类型
+    connection = op.get_bind()
+    is_postgresql = connection.dialect.name == "postgresql"
+
+    # 根据数据库类型选择NUMERIC类型
+    numeric_type = postgresql.NUMERIC(20, 6) if is_postgresql else sa.REAL
+
+    # 1. 修改 user 表：新增计费字段
+    op.add_column(
+        "user",
+        sa.Column(
+            "balance",
+            numeric_type,
+            server_default="0",
+            nullable=False,
+        ),
+    )
+    op.add_column(
+        "user",
+        sa.Column(
+            "total_consumed",
+            numeric_type,
+            server_default="0",
+            nullable=False,
+        ),
+    )
+    op.add_column(
+        "user",
+        sa.Column(
+            "billing_status",
+            sa.String(20),
+            server_default="active",
+            nullable=False,
+        ),
+    )
+
+    # 2. 创建 model_pricing 表
+    op.create_table(
+        "model_pricing",
+        sa.Column("id", sa.String(), nullable=False),
+        sa.Column("model_id", sa.String(), nullable=False),
+        sa.Column(
+            "input_price",
+            numeric_type,
+            nullable=False,
+        ),
+        sa.Column(
+            "output_price",
+            numeric_type,
+            nullable=False,
+        ),
+        sa.Column(
+            "enabled",
+            sa.Boolean(),
+            server_default="true" if is_postgresql else "1",
+            nullable=False,
+        ),
+        sa.Column("created_at", sa.BigInteger(), nullable=False),
+        sa.Column("updated_at", sa.BigInteger(), nullable=False),
+        sa.PrimaryKeyConstraint("id"),
+        sa.UniqueConstraint("model_id", name="uq_model_pricing_model_id"),
+    )
+
+    # 3. 创建 billing_log 表
+    op.create_table(
+        "billing_log",
+        sa.Column("id", sa.String(), nullable=False),
+        sa.Column("user_id", sa.String(), nullable=False),
+        sa.Column("model_id", sa.String(), nullable=False),
+        sa.Column(
+            "prompt_tokens", sa.Integer(), server_default="0"
+        ),
+        sa.Column(
+            "completion_tokens", sa.Integer(), server_default="0"
+        ),
+        sa.Column(
+            "total_cost",
+            numeric_type,
+            nullable=False,
+        ),
+        sa.Column(
+            "balance_after",
+            numeric_type,
+            nullable=True,
+        ),
+        sa.Column(
+            "log_type",
+            sa.String(20),
+            server_default="deduct",
+        ),
+        sa.Column("created_at", sa.BigInteger(), nullable=False),
+        sa.PrimaryKeyConstraint("id"),
+    )
+
+    # 创建 billing_log 索引
+    op.create_index(
+        "idx_billing_log_user_id", "billing_log", ["user_id"], unique=False
+    )
+    op.create_index(
+        "idx_billing_log_created_at", "billing_log", ["created_at"], unique=False
+    )
+    op.create_index(
+        "idx_billing_log_user_created",
+        "billing_log",
+        ["user_id", "created_at"],
+        unique=False,
+    )
+
+    # 4. 创建 recharge_log 表
+    op.create_table(
+        "recharge_log",
+        sa.Column("id", sa.String(), nullable=False),
+        sa.Column("user_id", sa.String(), nullable=False),
+        sa.Column(
+            "amount",
+            numeric_type,
+            nullable=False,
+        ),
+        sa.Column("operator_id", sa.String(), nullable=False),
+        sa.Column("remark", sa.Text(), nullable=True),
+        sa.Column("created_at", sa.BigInteger(), nullable=False),
+        sa.PrimaryKeyConstraint("id"),
+    )
+
+    # 创建 recharge_log 索引
+    op.create_index(
+        "idx_recharge_log_user_id", "recharge_log", ["user_id"], unique=False
+    )
+    op.create_index(
+        "idx_recharge_log_created_at", "recharge_log", ["created_at"], unique=False
+    )
+
+
+def downgrade():
+    """降级数据库：移除计费系统"""
+    # 删除索引
+    op.drop_index("idx_recharge_log_created_at", "recharge_log")
+    op.drop_index("idx_recharge_log_user_id", "recharge_log")
+    op.drop_index("idx_billing_log_user_created", "billing_log")
+    op.drop_index("idx_billing_log_created_at", "billing_log")
+    op.drop_index("idx_billing_log_user_id", "billing_log")
+
+    # 删除表
+    op.drop_table("recharge_log")
+    op.drop_table("billing_log")
+    op.drop_table("model_pricing")
+
+    # 删除 user 表字段
+    op.drop_column("user", "billing_status")
+    op.drop_column("user", "total_consumed")
+    op.drop_column("user", "balance")
diff --git a/backend/open_webui/migrations/versions/f8c9d0e4a3b2_change_billing_to_integer_cents.py b/backend/open_webui/migrations/versions/f8c9d0e4a3b2_change_billing_to_integer_cents.py
new file mode 100644
index 0000000000..b309ae5570
--- /dev/null
+++ b/backend/open_webui/migrations/versions/f8c9d0e4a3b2_change_billing_to_integer_cents.py
@@ -0,0 +1,210 @@
+"""Change billing amounts to integer (milli-yuan precision)
+
+Revision ID: f8c9d0e4a3b2
+Revises: e5f8a9b3c2d1
+Create Date: 2025-12-06 12:00:00.000000
+
+将金额字段从 DECIMAL/REAL 改为 INTEGER，以毫为单位存储（1元 = 10000毫，精度0.0001元）
+- user.balance: Decimal -> Integer (毫)
+- user.total_consumed: Decimal -> Integer (毫)
+- model_pricing.input_price: Decimal -> Integer (毫/百万tokens)
+- model_pricing.output_price: Decimal -> Integer (毫/百万tokens)
+- billing_log.total_cost: Decimal -> Integer (毫)
+- billing_log.balance_after: Decimal -> Integer (毫)
+- recharge_log.amount: Decimal -> Integer (毫)
+
+注意：现有数据将乘以10000转换（元 -> 毫）
+"""
+
+from alembic import op
+import sqlalchemy as sa
+
+
+revision = "f8c9d0e4a3b2"
+down_revision = "607801a77d0d"  # merge billing and reply_to heads
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    """升级数据库：将金额字段改为整数（分）"""
+    connection = op.get_bind()
+    is_sqlite = connection.dialect.name == "sqlite"
+
+    if is_sqlite:
+        # SQLite 不支持直接修改列类型，需要重建表
+        # 1. user 表
+        with op.batch_alter_table("user") as batch_op:
+            # SQLite: 先转换现有数据（元 * 10000 = 毫）
+            connection.execute(sa.text("""
+                UPDATE user
+                SET balance = CAST(balance * 10000 AS INTEGER),
+                    total_consumed = CAST(total_consumed * 10000 AS INTEGER)
+            """))
+
+            # 修改列类型
+            batch_op.alter_column("balance",
+                                existing_type=sa.REAL,
+                                type_=sa.Integer(),
+                                existing_nullable=False,
+                                existing_server_default="0")
+            batch_op.alter_column("total_consumed",
+                                existing_type=sa.REAL,
+                                type_=sa.Integer(),
+                                existing_nullable=False,
+                                existing_server_default="0")
+
+        # 2. model_pricing 表
+        with op.batch_alter_table("model_pricing") as batch_op:
+            connection.execute(sa.text("""
+                UPDATE model_pricing
+                SET input_price = CAST(input_price * 10000 AS INTEGER),
+                    output_price = CAST(output_price * 10000 AS INTEGER)
+            """))
+
+            batch_op.alter_column("input_price",
+                                existing_type=sa.REAL,
+                                type_=sa.Integer(),
+                                existing_nullable=False)
+            batch_op.alter_column("output_price",
+                                existing_type=sa.REAL,
+                                type_=sa.Integer(),
+                                existing_nullable=False)
+
+        # 3. billing_log 表
+        with op.batch_alter_table("billing_log") as batch_op:
+            connection.execute(sa.text("""
+                UPDATE billing_log
+                SET total_cost = CAST(total_cost * 10000 AS INTEGER),
+                    balance_after = CAST(COALESCE(balance_after, 0) * 10000 AS INTEGER)
+            """))
+
+            batch_op.alter_column("total_cost",
+                                existing_type=sa.REAL,
+                                type_=sa.Integer(),
+                                existing_nullable=False)
+            batch_op.alter_column("balance_after",
+                                existing_type=sa.REAL,
+                                type_=sa.Integer(),
+                                existing_nullable=True)
+
+        # 4. recharge_log 表
+        with op.batch_alter_table("recharge_log") as batch_op:
+            connection.execute(sa.text("""
+                UPDATE recharge_log
+                SET amount = CAST(amount * 10000 AS INTEGER)
+            """))
+
+            batch_op.alter_column("amount",
+                                existing_type=sa.REAL,
+                                type_=sa.Integer(),
+                                existing_nullable=False)
+
+    else:
+        # PostgreSQL 支持直接修改
+        # 1. 先转换数据（元 * 10000 = 毫）
+        connection.execute(sa.text("""
+            UPDATE "user"
+            SET balance = CAST(balance * 10000 AS INTEGER),
+                total_consumed = CAST(total_consumed * 10000 AS INTEGER)
+        """))
+        connection.execute(sa.text("""
+            UPDATE model_pricing
+            SET input_price = CAST(input_price * 10000 AS INTEGER),
+                output_price = CAST(output_price * 10000 AS INTEGER)
+        """))
+        connection.execute(sa.text("""
+            UPDATE billing_log
+            SET total_cost = CAST(total_cost * 10000 AS INTEGER),
+                balance_after = CAST(COALESCE(balance_after, 0) * 10000 AS INTEGER)
+        """))
+        connection.execute(sa.text("""
+            UPDATE recharge_log
+            SET amount = CAST(amount * 10000 AS INTEGER)
+        """))
+
+        # 2. 修改列类型
+        op.alter_column("user", "balance", type_=sa.Integer())
+        op.alter_column("user", "total_consumed", type_=sa.Integer())
+        op.alter_column("model_pricing", "input_price", type_=sa.Integer())
+        op.alter_column("model_pricing", "output_price", type_=sa.Integer())
+        op.alter_column("billing_log", "total_cost", type_=sa.Integer())
+        op.alter_column("billing_log", "balance_after", type_=sa.Integer())
+        op.alter_column("recharge_log", "amount", type_=sa.Integer())
+
+
+def downgrade():
+    """降级数据库：将整数（分）改回 Decimal（元）"""
+    connection = op.get_bind()
+    is_sqlite = connection.dialect.name == "sqlite"
+    is_postgresql = connection.dialect.name == "postgresql"
+
+    numeric_type = sa.NUMERIC(20, 6) if is_postgresql else sa.REAL
+
+    if is_sqlite:
+        # SQLite 降级
+        with op.batch_alter_table("user") as batch_op:
+            batch_op.alter_column("balance", type_=sa.REAL)
+            batch_op.alter_column("total_consumed", type_=sa.REAL)
+
+        with op.batch_alter_table("model_pricing") as batch_op:
+            batch_op.alter_column("input_price", type_=sa.REAL)
+            batch_op.alter_column("output_price", type_=sa.REAL)
+
+        with op.batch_alter_table("billing_log") as batch_op:
+            batch_op.alter_column("total_cost", type_=sa.REAL)
+            batch_op.alter_column("balance_after", type_=sa.REAL)
+
+        with op.batch_alter_table("recharge_log") as batch_op:
+            batch_op.alter_column("amount", type_=sa.REAL)
+
+        # 转换数据（毫 / 10000 = 元）
+        connection.execute(sa.text("""
+            UPDATE user
+            SET balance = CAST(balance AS REAL) / 10000.0,
+                total_consumed = CAST(total_consumed AS REAL) / 10000.0
+        """))
+        connection.execute(sa.text("""
+            UPDATE model_pricing
+            SET input_price = CAST(input_price AS REAL) / 10000.0,
+                output_price = CAST(output_price AS REAL) / 10000.0
+        """))
+        connection.execute(sa.text("""
+            UPDATE billing_log
+            SET total_cost = CAST(total_cost AS REAL) / 10000.0,
+                balance_after = CAST(balance_after AS REAL) / 10000.0
+        """))
+        connection.execute(sa.text("""
+            UPDATE recharge_log
+            SET amount = CAST(amount AS REAL) / 10000.0
+        """))
+
+    else:
+        # PostgreSQL 降级
+        op.alter_column("user", "balance", type_=numeric_type)
+        op.alter_column("user", "total_consumed", type_=numeric_type)
+        op.alter_column("model_pricing", "input_price", type_=numeric_type)
+        op.alter_column("model_pricing", "output_price", type_=numeric_type)
+        op.alter_column("billing_log", "total_cost", type_=numeric_type)
+        op.alter_column("billing_log", "balance_after", type_=numeric_type)
+        op.alter_column("recharge_log", "amount", type_=numeric_type)
+
+        connection.execute(sa.text("""
+            UPDATE "user"
+            SET balance = balance / 10000.0,
+                total_consumed = total_consumed / 10000.0
+        """))
+        connection.execute(sa.text("""
+            UPDATE model_pricing
+            SET input_price = input_price / 10000.0,
+                output_price = output_price / 10000.0
+        """))
+        connection.execute(sa.text("""
+            UPDATE billing_log
+            SET total_cost = total_cost / 10000.0,
+                balance_after = balance_after / 10000.0
+        """))
+        connection.execute(sa.text("""
+            UPDATE recharge_log
+            SET amount = amount / 10000.0
+        """))
diff --git a/backend/open_webui/models/billing.py b/backend/open_webui/models/billing.py
new file mode 100644
index 0000000000..38d732a051
--- /dev/null
+++ b/backend/open_webui/models/billing.py
@@ -0,0 +1,276 @@
+"""
+计费模块数据模型
+
+包含模型定价、计费日志、充值日志的 ORM 模型和数据访问层
+"""
+
+import time
+import uuid
+from typing import Optional
+
+from pydantic import BaseModel, ConfigDict
+from sqlalchemy import Boolean, Column, String, Integer, BigInteger, Text
+
+from open_webui.internal.db import Base, get_db
+
+
+####################
+# ModelPricing DB Schema
+####################
+
+
+class ModelPricing(Base):
+    """模型定价表"""
+
+    __tablename__ = "model_pricing"
+
+    id = Column(String, primary_key=True)
+    model_id = Column(String, unique=True, nullable=False)  # 模型标识，如 "gpt-4o"
+    input_price = Column(Integer, nullable=False)  # 输入价格（分/1k token）
+    output_price = Column(Integer, nullable=False)  # 输出价格（分/1k token）
+    enabled = Column(Boolean, default=True, nullable=False)  # 是否启用
+    created_at = Column(BigInteger, nullable=False)
+    updated_at = Column(BigInteger, nullable=False)
+
+
+class BillingLog(Base):
+    """计费日志表"""
+
+    __tablename__ = "billing_log"
+
+    id = Column(String, primary_key=True)
+    user_id = Column(String, nullable=False, index=True)
+    model_id = Column(String, nullable=False)
+    prompt_tokens = Column(Integer, default=0)
+    completion_tokens = Column(Integer, default=0)
+    total_cost = Column(Integer, nullable=False)  # 本次费用（分）
+    balance_after = Column(Integer)  # 扣费后余额（分）
+    log_type = Column(String(20), default="deduct")  # deduct/refund/precharge/settle
+    created_at = Column(BigInteger, nullable=False, index=True)
+
+    # 预扣费相关字段
+    precharge_id = Column(String, nullable=True, index=True)  # 预扣费事务ID
+    status = Column(String(20), nullable=True, default="settled")  # precharge | settled | refunded
+    estimated_tokens = Column(Integer, nullable=True)  # 预估tokens总数
+    refund_amount = Column(Integer, nullable=True)  # 退款金额（毫）
+
+
+class RechargeLog(Base):
+    """充值日志表"""
+
+    __tablename__ = "recharge_log"
+
+    id = Column(String, primary_key=True)
+    user_id = Column(String, nullable=False, index=True)
+    amount = Column(Integer, nullable=False)  # 充值金额（分）
+    operator_id = Column(String, nullable=False)  # 操作员ID
+    remark = Column(Text)  # 备注
+    created_at = Column(BigInteger, nullable=False)
+
+
+####################
+# Pydantic Models
+####################
+
+
+class ModelPricingModel(BaseModel):
+    """模型定价 Pydantic 模型（以分为单位）"""
+
+    id: str
+    model_id: str
+    input_price: int  # 分/1k tokens
+    output_price: int  # 分/1k tokens
+    enabled: bool
+    created_at: int
+    updated_at: int
+
+    model_config = ConfigDict(from_attributes=True)
+
+
+class BillingLogModel(BaseModel):
+    """计费日志 Pydantic 模型（以分为单位）"""
+
+    id: str
+    user_id: str
+    model_id: str
+    prompt_tokens: int
+    completion_tokens: int
+    total_cost: int  # 分
+    balance_after: Optional[int]  # 分
+    log_type: str
+    created_at: int
+
+    # 预扣费相关字段
+    precharge_id: Optional[str] = None
+    status: Optional[str] = "settled"
+    estimated_tokens: Optional[int] = None
+    refund_amount: Optional[int] = None
+
+    model_config = ConfigDict(from_attributes=True)
+
+
+class RechargeLogModel(BaseModel):
+    """充值日志 Pydantic 模型（以分为单位）"""
+
+    id: str
+    user_id: str
+    amount: int  # 分
+    operator_id: str
+    remark: Optional[str]
+    created_at: int
+
+    model_config = ConfigDict(from_attributes=True)
+
+
+####################
+# Data Access Layer
+####################
+
+
+class ModelPricingTable:
+    """模型定价数据访问层"""
+
+    def get_by_model_id(self, model_id: str) -> Optional[ModelPricingModel]:
+        """根据模型ID获取定价"""
+        try:
+            with get_db() as db:
+                pricing = (
+                    db.query(ModelPricing)
+                    .filter_by(model_id=model_id, enabled=True)
+                    .first()
+                )
+                return ModelPricingModel.model_validate(pricing) if pricing else None
+        except Exception:
+            return None
+
+    def get_all(self) -> list[ModelPricingModel]:
+        """获取所有定价"""
+        with get_db() as db:
+            pricings = db.query(ModelPricing).filter_by(enabled=True).all()
+            return [ModelPricingModel.model_validate(p) for p in pricings]
+
+    def upsert(
+        self, model_id: str, input_price: int, output_price: int
+    ) -> ModelPricingModel:
+        """创建或更新定价"""
+        with get_db() as db:
+            existing = db.query(ModelPricing).filter_by(model_id=model_id).first()
+            now = int(time.time())
+
+            if existing:
+                # 更新
+                existing.input_price = input_price
+                existing.output_price = output_price
+                existing.updated_at = now
+                db.commit()
+                db.refresh(existing)
+                return ModelPricingModel.model_validate(existing)
+            else:
+                # 创建
+                new_pricing = ModelPricing(
+                    id=str(uuid.uuid4()),
+                    model_id=model_id,
+                    input_price=input_price,
+                    output_price=output_price,
+                    enabled=True,
+                    created_at=now,
+                    updated_at=now,
+                )
+                db.add(new_pricing)
+                db.commit()
+                db.refresh(new_pricing)
+                return ModelPricingModel.model_validate(new_pricing)
+
+    def delete_by_model_id(self, model_id: str) -> bool:
+        """删除定价（软删除，设置 enabled=False）"""
+        try:
+            with get_db() as db:
+                result = (
+                    db.query(ModelPricing)
+                    .filter_by(model_id=model_id)
+                    .update({"enabled": False})
+                )
+                db.commit()
+                return result > 0
+        except Exception:
+            return False
+
+
+class BillingLogTable:
+    """计费日志数据访问层"""
+
+    def get_by_user_id(
+        self, user_id: str, limit: int = 50, offset: int = 0
+    ) -> list[BillingLogModel]:
+        """获取用户计费日志"""
+        with get_db() as db:
+            logs = (
+                db.query(BillingLog)
+                .filter_by(user_id=user_id)
+                .order_by(BillingLog.created_at.desc())
+                .limit(limit)
+                .offset(offset)
+                .all()
+            )
+            return [BillingLogModel.model_validate(log) for log in logs]
+
+    def count_by_user_id(self, user_id: str) -> int:
+        """统计用户日志数量"""
+        with get_db() as db:
+            return db.query(BillingLog).filter_by(user_id=user_id).count()
+
+
+class RechargeLogTable:
+    """充值日志数据访问层"""
+
+    def get_by_user_id(
+        self, user_id: str, limit: int = 50, offset: int = 0
+    ) -> list[RechargeLogModel]:
+        """获取用户充值日志"""
+        with get_db() as db:
+            logs = (
+                db.query(RechargeLog)
+                .filter_by(user_id=user_id)
+                .order_by(RechargeLog.created_at.desc())
+                .limit(limit)
+                .offset(offset)
+                .all()
+            )
+            return [RechargeLogModel.model_validate(log) for log in logs]
+
+    def get_by_user_id_with_operator_name(
+        self, user_id: str, limit: int = 50, offset: int = 0
+    ) -> list[dict]:
+        """获取用户充值日志,包含操作员姓名"""
+        from open_webui.models.users import User
+
+        with get_db() as db:
+            logs = (
+                db.query(RechargeLog, User.name.label("operator_name"))
+                .join(User, RechargeLog.operator_id == User.id)
+                .filter(RechargeLog.user_id == user_id)
+                .order_by(RechargeLog.created_at.desc())
+                .limit(limit)
+                .offset(offset)
+                .all()
+            )
+
+            # 转换为字典格式
+            return [
+                {
+                    "id": log.RechargeLog.id,
+                    "user_id": log.RechargeLog.user_id,
+                    "amount": log.RechargeLog.amount,  # 整数（分）
+                    "operator_id": log.RechargeLog.operator_id,
+                    "operator_name": log.operator_name,
+                    "remark": log.RechargeLog.remark,
+                    "created_at": log.RechargeLog.created_at,
+                }
+                for log in logs
+            ]
+
+
+# 单例实例
+ModelPricings = ModelPricingTable()
+BillingLogs = BillingLogTable()
+RechargeLogs = RechargeLogTable()
diff --git a/backend/open_webui/models/users.py b/backend/open_webui/models/users.py
index d54ed4a72c..50d2d9258b 100644
--- a/backend/open_webui/models/users.py
+++ b/backend/open_webui/models/users.py
@@ -11,7 +11,7 @@ from open_webui.utils.misc import throttle
 
 
 from pydantic import BaseModel, ConfigDict
-from sqlalchemy import BigInteger, Column, String, Text, Date
+from sqlalchemy import BigInteger, Column, String, Text, Date, Integer
 from sqlalchemy import or_
 
 import datetime
@@ -48,6 +48,11 @@ class User(Base):
     updated_at = Column(BigInteger)
     created_at = Column(BigInteger)
 
+    # 计费相关字段（以分为单位存储）
+    balance = Column(Integer, default=0, nullable=False)  # 账户余额（分）
+    total_consumed = Column(Integer, default=0, nullable=False)  # 累计消费（分）
+    billing_status = Column(String(20), default="active", nullable=False)  # active/frozen
+
 
 class UserSettings(BaseModel):
     ui: Optional[dict] = {}
@@ -79,6 +84,11 @@ class UserModel(BaseModel):
     updated_at: int  # timestamp in epoch
     created_at: int  # timestamp in epoch
 
+    # 计费相关字段（以分为单位）
+    balance: Optional[int] = 0
+    total_consumed: Optional[int] = 0
+    billing_status: Optional[str] = "active"
+
     model_config = ConfigDict(from_attributes=True)
 
 
@@ -272,6 +282,11 @@ class UsersTable:
                         query = query.order_by(User.role.asc())
                     else:
                         query = query.order_by(User.role.desc())
+                elif order_by == "balance":
+                    if direction == "asc":
+                        query = query.order_by(User.balance.asc())
+                    else:
+                        query = query.order_by(User.balance.desc())
 
             else:
                 query = query.order_by(User.created_at.desc())