diff --git a/novelai_api/Tokenizer.py b/novelai_api/Tokenizer.py
index f153e21..7905a33 100644
--- a/novelai_api/Tokenizer.py
+++ b/novelai_api/Tokenizer.py
@@ -1,6 +1,7 @@
 from pathlib import Path
 from typing import List, Union
 
+import sentencepiece
 import tokenizers
 
 from novelai_api.ImagePreset import ImageModel
@@ -47,11 +48,18 @@ def get_tokenizer_name(cls, model: Model) -> str:
     # TODO: check differences from NAI tokenizer (from my limited testing, there is None)
     _CLIP_TOKENIZER = SimpleTokenizer()
 
+    _NERDSTASH_PATH = tokenizers_path / "nerdstash_tokenizer.model"
+    _NERDSTASH_TOKENIZER = sentencepiece.SentencePieceProcessor()
+    _NERDSTASH_TOKENIZER.LoadFromFile(str(_NERDSTASH_PATH))
+    _NERDSTASH_TOKENIZER.encode = _NERDSTASH_TOKENIZER.EncodeAsIds
+    _NERDSTASH_TOKENIZER.decode = _NERDSTASH_TOKENIZER.DecodeIds
+
     _tokenizers = {
         "gpt2": _GPT2_TOKENIZER,
         "gpt2-genji": _GENJI_TOKENIZER,
         "pile": _PILE_TOKENIZER,
         "clip": _CLIP_TOKENIZER,
+        "nerdstash": _NERDSTASH_TOKENIZER,
     }
 
     @classmethod
@@ -69,7 +77,7 @@ def encode(cls, model: AnyModel, o: str) -> List[int]:
         if isinstance(tokenizer, tokenizers.Tokenizer):
             return tokenizer.encode(o).ids
 
-        if isinstance(tokenizer, SimpleTokenizer):
+        if isinstance(tokenizer, (sentencepiece.SentencePieceProcessor, SimpleTokenizer)):
             return tokenizer.encode(o)
 
         raise ValueError(f"Tokenizer {tokenizer} ({tokenizer_name}) not recognized")
diff --git a/novelai_api/tokenizers/nerdstash_tokenizer.model b/novelai_api/tokenizers/nerdstash_tokenizer.model
new file mode 100644
index 0000000..b95958a
Binary files /dev/null and b/novelai_api/tokenizers/nerdstash_tokenizer.model differ
diff --git a/pyproject.toml b/pyproject.toml
index de2d557..f907648 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -23,6 +23,7 @@ jsonschema = "^4.17.0"
 tokenizers = "^0.13.1"
 ftfy = "^6.1.1"
 regex = "^2022.10.31"
+sentencepiece = "^0.1.98"
 
 [tool.poetry.group.dev.dependencies]
 pytest-asyncio = "^0.20.1"