diff --git a/crates/bpe-openai/README.md b/crates/bpe-openai/README.md
index 0e25976..e5116e7 100644
--- a/crates/bpe-openai/README.md
+++ b/crates/bpe-openai/README.md
@@ -7,8 +7,6 @@ For convencience it re-exports the `bpe` crate so that depending on this crate i
 
 Supported tokenizers:
 
-- r50k
-- p50k
 - cl100k
 - o200k
 
diff --git a/crates/bpe-openai/build.rs b/crates/bpe-openai/build.rs
index 472e580..528eae6 100644
--- a/crates/bpe-openai/build.rs
+++ b/crates/bpe-openai/build.rs
@@ -7,8 +7,6 @@ use bpe::byte_pair_encoding::{read_tiktoken, BytePairEncoding};
 use serde::Serialize;
 
 fn main() {
-    serialize_tiktoken_bpe("r50k_base", include_bytes!("data/r50k_base.tiktoken.gz"), 1);
-    serialize_tiktoken_bpe("p50k_base", include_bytes!("data/p50k_base.tiktoken.gz"), 1);
     serialize_tiktoken_bpe(
         "cl100k_base",
         include_bytes!("data/cl100k_base.tiktoken.gz"),
diff --git a/crates/bpe-openai/data/p50k_base.tiktoken.gz b/crates/bpe-openai/data/p50k_base.tiktoken.gz
deleted file mode 100644
index af6f846..0000000
Binary files a/crates/bpe-openai/data/p50k_base.tiktoken.gz and /dev/null differ
diff --git a/crates/bpe-openai/data/r50k_base.tiktoken.gz b/crates/bpe-openai/data/r50k_base.tiktoken.gz
deleted file mode 100644
index 6108f82..0000000
Binary files a/crates/bpe-openai/data/r50k_base.tiktoken.gz and /dev/null differ
diff --git a/crates/bpe-openai/src/lib.rs b/crates/bpe-openai/src/lib.rs
index 2bac02d..29f6ce4 100644
--- a/crates/bpe-openai/src/lib.rs
+++ b/crates/bpe-openai/src/lib.rs
@@ -8,20 +8,6 @@ use fancy_regex::Regex;
 // The look-ahead character is dropped from the match by the Pretokenizer iterator.
 // Note: The negative look-ahead `\\s+(?!\\S)` requires `\\s+\\s` but also `\\s+$` to handle end of file without dropping a character!
 
-static BPE_R50K_BASE: LazyLock<Tokenizer> = LazyLock::new(|| {
-    let bytes = include_bytes!(concat!(env!("OUT_DIR"), "/bpe_r50k_base.dict"));
-    let bpe = rmp_serde::from_slice(bytes).expect("valid bpe data");
-    let pat = "'s|'t|'re|'ve|'m|'ll|'d| ?\\p{L}+| ?\\p{N}+| ?[^\\s\\p{L}\\p{N}]+|\\s+(?!\\S)|\\s+";
-    Tokenizer::new(bpe, Some(pat)).expect("valid regex")
-});
-
-static BPE_P50K_BASE: LazyLock<Tokenizer> = LazyLock::new(|| {
-    let bytes = include_bytes!(concat!(env!("OUT_DIR"), "/bpe_p50k_base.dict"));
-    let bpe = rmp_serde::from_slice(bytes).expect("valid bpe data");
-    let pat = "'s|'t|'re|'ve|'m|'ll|'d| ?\\p{L}+| ?\\p{N}+| ?[^\\s\\p{L}\\p{N}]+|\\s+(?!\\S)|\\s+";
-    Tokenizer::new(bpe, Some(pat)).expect("valid regex")
-});
-
 static BPE_CL100K_BASE: LazyLock<Tokenizer> = LazyLock::new(|| {
     let bytes = include_bytes!(concat!(env!("OUT_DIR"), "/bpe_cl100k_base.dict"));
     let bpe = rmp_serde::from_slice(bytes).expect("valid bpe data");
@@ -96,14 +82,6 @@ impl Tokenizer {
     }
 }
 
-pub fn r50k_base() -> &'static Tokenizer {
-    &BPE_R50K_BASE
-}
-
-pub fn p50k_base() -> &'static Tokenizer {
-    &BPE_P50K_BASE
-}
-
 pub fn cl100k_base() -> &'static Tokenizer {
     &BPE_CL100K_BASE
 }
@@ -115,23 +93,10 @@ pub fn o200k_base() -> &'static Tokenizer {
 #[cfg(test)]
 mod tests {
     use bpe::byte_pair_encoding::{create_test_string, select_test_string};
-    use tiktoken_rs::{
-        cl100k_base_singleton, o200k_base_singleton, p50k_base_singleton, r50k_base_singleton,
-        CoreBPE,
-    };
+    use tiktoken_rs::{cl100k_base_singleton, o200k_base_singleton, CoreBPE};
 
     use super::*;
 
-    #[test]
-    fn test_r50k() {
-        test_equivalence(r50k_base(), &r50k_base_singleton().lock());
-    }
-
-    #[test]
-    fn test_p50k() {
-        test_equivalence(p50k_base(), &p50k_base_singleton().lock());
-    }
-
     #[test]
     fn test_cl100k() {
         test_equivalence(cl100k_base(), &cl100k_base_singleton().lock());