diff --git a/llmage/accounting.py b/llmage/accounting.py
index bcc8db9..38ce097 100644
--- a/llmage/accounting.py
+++ b/llmage/accounting.py
@@ -7,15 +7,14 @@ from appPublic.uniqueID import getID
 from appPublic.dictObject import DictObject
 from sqlor.dbpools import get_sor_context
 from ahserver.serverenv import ServerEnv
-# from pricing.pricing import pricing_program_charging
 from accounting.consume import consume_accounting
 from accounting.getaccount import getCustomerBalance
 
 async def llm_charging(sor, ppid, llmusage):
 	env = ServerEnv()
-	prices = await env.pricing_program_charging(sor, ppid, llmusage.usages)
+	prices = await env.pbuffered_chargin(ppid, llmusage.usages)
 	if prices is None:
-		e = Exception(f'{ppid=}, {llmusage.usage=}{llmusage.id=}  env.pricing_program_charging() return None')
+		e = Exception(f'{ppid=}, {llmusage.usage=}{llmusage.id=}  env.buffered_charging() return None')
 		exception(f'{e}')
 		raise e
 		return None
diff --git a/llmage/init.py b/llmage/init.py
index ddd9edb..2a87caa 100644
--- a/llmage/init.py
+++ b/llmage/init.py
@@ -7,6 +7,7 @@ from .keling import keling_token
 from .jimeng import jimeng_auth_headers
 from .utils import (
 	llm_query_orders,
+	llm_query_price,
 	get_llm_by_model
 )
 
@@ -15,7 +16,6 @@ from .llmclient import (
 	get_llm, 
 	inference_generator,
 	inference, 
-	llm_query_price,
 	get_llmproviders,
 	get_llms_sort_by_provider,
 	get_llmcatelogs,
diff --git a/llmage/llmclient.py b/llmage/llmclient.py
index 908a12f..dc175c8 100644
--- a/llmage/llmclient.py
+++ b/llmage/llmclient.py
@@ -177,19 +177,3 @@ async def inference(request, *args, params_kw=None, **kw):
 	f = partial(inference_generator, request, *args, params_kw=params_kw, **kw)
 	return await env.stream_response(request, f)
 	
-async def llm_query_price(llmid, config_data):
-	env = ServerEnv()
-	async with get_sor_context(env, 'llmage') as sor:
-		llms = await sor.R('llm', {'id': llmid})
-		if not llms:
-			e = Exception(f'id={llmid} llm not founnd')
-			exception(f'{e}')
-			raise e
-		llm = llms[0]
-		if llm.ppid is None:	
-			e = Exception(f'{llm=} ppid is None')
-			exception(f'{e}')
-			raise e
-		prices = await env.pricing_program_charging(sor, llm.ppid, config_data)
-		return prices
-
diff --git a/llmage/utils.py b/llmage/utils.py
index 435e14b..a2055c8 100644
--- a/llmage/utils.py
+++ b/llmage/utils.py
@@ -160,41 +160,55 @@ where a.llmcatelogid = b.id
 		return d
 	return []
 	
-async def get_llm(llmid):
-	db = DBPools()
-	dbname = get_serverenv('get_module_dbname')('llmage')
-	async with db.sqlorContext(dbname) as sor:
+class BufferedLLMs:
+	lls = {}
+	async def get_llm(self, llmid):
 		today = curDateString()
-		sql = """select x.*,
-z.input_fields
-from (
-select a.*, e.ioid, e.callbackurl, e.stream
-from llm a, upapp c, uapiset d, uapi e
-where a.upappid = c.id
-	and c.apisetid = d.id
-	and e.apisetid = d.id
-	and a.apiname = e.name
-	and a.expired_date > ${today}$
-	and a.enabled_date <= ${today}$
-) x left join uapiio z on x.ioid = z.id
-where x.id = ${llmid}$	
-"""
-		ns = {'llmid': llmid, 'today': today}
-		recs = await sor.sqlExe(sql, ns.copy())
-		if len(recs) > 0:
-			r = recs[0]
-			api = await sor_get_uapi(sor, r.upappid, r.apiname)
-			if api is None:
-				e = Exception(f'{r.upappid=},{r.apiname=} uapi not found')
-				exception(f'{e=}\n{format_exc()}')
-				raise e
-			r.inputfields = api.input_fields
-			return recs[0]
-		else:
-			debug(f'{llmid=} not found, {ns=}, {sql=}')
-			return None
-	exception(f'{db.e_except}\n{format_exc()}')
-	return None
+		k = f'{llmid}.{today}'
+		d = BufferedLLMs.llms.get(k)
+		if d:
+			return d
+		env = ServerEnv()
+		async with get_sor_context(env, 'llmage') as sor:
+			sql = """select x.*,
+	z.input_fields
+	from (
+	select a.*, e.ioid, e.callbackurl, e.stream, f.input_fields as inputfields
+	from llm a, upapp c, uapiset d, uapi e, uapiio f
+	where a.upappid = c.id
+		and c.apisetid = d.id
+		and e.apisetid = d.id
+		and e.ioid = f.id
+		and a.apiname = e.name
+		and a.expired_date > ${today}$
+		and a.enabled_date <= ${today}$
+	) x left join uapiio z on x.ioid = z.id
+	where x.id = ${llmid}$  
+	"""
+			ns = {'llmid': llmid, 'today': today}
+			recs = await sor.sqlExe(sql, ns.copy())
+			if len(recs) > 0:
+				r = recs[0]
+				dates = BufferedLLMs.llms.get(llmid, [])
+				dates.append(today)
+				cnt = len(dates)
+				if cnt > 2:
+					for i in range(0, cnt -2)
+						dat = dates[i]
+						del BufferedLLMs.llms[f'{llmid}.{dat}']
+					dates = dates[-2:]
+					BufferedLLMs.llms[llmid] = dates
+				BufferedLLMs.llms[k] = r
+				return r
+			else:
+				debug(f'{llmid=} not found, {ns=}, {sql=}')
+            return None
+		exception(f'Error: format_exc()}')
+		return None
+
+async def get_llm(llmid):
+	bllms = BufferedLLMs()
+	return await bllms.get_llm(llmid)
 
 async def get_owner_userid(sor, llm):
 	sql = '''select a.ownerid as userid from upappkey a, upapp b
@@ -210,3 +224,13 @@ async def write_llmusage(llmusage):
 	async with get_sor_context(env, 'llmage') as sor:
 		await sor.C('llmusage', llmusage)
 
+async def llm_query_price(llmid, config_data):
+	env = ServerEnv()
+	llm = await get_llm(llmid)
+	if llm.ppid is None:	
+		e = Exception(f'{llm=} ppid is None')
+		exception(f'{e}')
+		raise e
+	prices = await env.buffered_charging(llm.ppid, config_data)
+	return prices
+