# IPEX-LLM API - [IPEX-LLM `transformers`-style API](./transformers.md) - [Hugging Face `transformers` AutoModel](./transformers.md#hugging-face-transformers-automodel) - AutoModelForCausalLM - AutoModel - AutoModelForSpeechSeq2Seq - AutoModelForSeq2SeqLM - AutoModelForSequenceClassification - AutoModelForMaskedLM - AutoModelForQuestionAnswering - AutoModelForNextSentencePrediction - AutoModelForMultipleChoice - AutoModelForTokenClassification - [IPEX-LLM PyTorch API](./optimize.md) - [Optimize Model](./optimize.md#optimize-model) - [Load Optimized Model](./optimize.md#load-optimized-model)