diff --git a/api/migrations/versions/87a6537b4074_202512171846.py b/api/migrations/versions/87a6537b4074_202512171846.py
new file mode 100644
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+++ b/api/migrations/versions/87a6537b4074_202512171846.py
@@ -0,0 +1,74 @@
+"""202512171846
+
+Revision ID: 87a6537b4074
+Revises: 64ddbf3c3bcc
+Create Date: 2025-12-17 18:45:16.574812
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision: str = '87a6537b4074'
+down_revision: Union[str, None] = '64ddbf3c3bcc'
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_table('prompt_model_config',
+    sa.Column('id', sa.UUID(), nullable=False),
+    sa.Column('tenant_id', sa.UUID(), nullable=False, comment='Tenant ID'),
+    sa.Column('system_prompt', sa.Text(), nullable=False, comment='System Prompt'),
+    sa.Column('created_at', sa.DateTime(), nullable=True, comment='Creation Time'),
+    sa.Column('updated_at', sa.DateTime(), nullable=True, comment='Update Time'),
+    sa.ForeignKeyConstraint(['tenant_id'], ['tenants.id'], ),
+    sa.PrimaryKeyConstraint('id')
+    )
+    op.create_index(op.f('ix_prompt_model_config_id'), 'prompt_model_config', ['id'], unique=False)
+    op.create_table('prompt_opt_session_list',
+    sa.Column('id', sa.UUID(), nullable=False, comment='Session ID'),
+    sa.Column('tenant_id', sa.UUID(), nullable=False, comment='Tenant ID'),
+    sa.Column('user_id', sa.UUID(), nullable=False, comment='User ID'),
+    sa.Column('created_at', sa.DateTime(), nullable=True, comment='Creation Time'),
+    sa.ForeignKeyConstraint(['tenant_id'], ['tenants.id'], ),
+    sa.ForeignKeyConstraint(['user_id'], ['users.id'], ),
+    sa.PrimaryKeyConstraint('id')
+    )
+    op.create_index(op.f('ix_prompt_opt_session_list_created_at'), 'prompt_opt_session_list', ['created_at'], unique=False)
+    op.create_index(op.f('ix_prompt_opt_session_list_id'), 'prompt_opt_session_list', ['id'], unique=False)
+    op.create_table('prompt_opt_session_history',
+    sa.Column('id', sa.UUID(), nullable=False),
+    sa.Column('tenant_id', sa.UUID(), nullable=False, comment='Tenant ID'),
+    sa.Column('session_id', sa.UUID(), nullable=False, comment='Session ID'),
+    sa.Column('user_id', sa.UUID(), nullable=False, comment='User ID'),
+    sa.Column('role', sa.String(), nullable=False, comment='Message Role'),
+    sa.Column('content', sa.Text(), nullable=False, comment='Message Content'),
+    sa.Column('created_at', sa.DateTime(), nullable=True, comment='Creation Time'),
+    sa.ForeignKeyConstraint(['session_id'], ['prompt_opt_session_list.id'], ),
+    sa.ForeignKeyConstraint(['tenant_id'], ['tenants.id'], ),
+    sa.ForeignKeyConstraint(['user_id'], ['users.id'], ),
+    sa.PrimaryKeyConstraint('id')
+    )
+    op.create_index(op.f('ix_prompt_opt_session_history_created_at'), 'prompt_opt_session_history', ['created_at'], unique=False)
+    op.create_index(op.f('ix_prompt_opt_session_history_id'), 'prompt_opt_session_history', ['id'], unique=False)
+    op.create_index('ix_prompt_opt_session_history_session_user_created', 'prompt_opt_session_history', ['session_id', 'user_id', 'created_at'], unique=False)
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_index('ix_prompt_opt_session_history_session_user_created', table_name='prompt_opt_session_history')
+    op.drop_index(op.f('ix_prompt_opt_session_history_id'), table_name='prompt_opt_session_history')
+    op.drop_index(op.f('ix_prompt_opt_session_history_created_at'), table_name='prompt_opt_session_history')
+    op.drop_table('prompt_opt_session_history')
+    op.drop_index(op.f('ix_prompt_opt_session_list_id'), table_name='prompt_opt_session_list')
+    op.drop_index(op.f('ix_prompt_opt_session_list_created_at'), table_name='prompt_opt_session_list')
+    op.drop_table('prompt_opt_session_list')
+    op.drop_index(op.f('ix_prompt_model_config_id'), table_name='prompt_model_config')
+    op.drop_table('prompt_model_config')
+    # ### end Alembic commands ###