[Bug]: Custom `input_cost_per_token_above_ _tokens` tiers are silently dropped unless N is 128k/200k/272k
![[Bug]: Custom `input_cost_per_token_above_ _tokens` tiers are silently dropped unless N is 128k/200k/272k](https://www.chat-gpts.plus/wp-content/uploads/2026/06/30344-fbe5ac89-768x403.jpg)
用户在使用 litellm.register_model 注册自定义模型时,配置了 input_cost_per_token_above_500k_tokens 之类的分层定价键,但在调用 litellm.cost_calculator.cost_per_token 计算成本时,系统并未使用该分层价








