diff --git a/.gitignore b/.gitignore
index 1ad2d79..9d66081 100644
--- a/.gitignore
+++ b/.gitignore
@@ -85,7 +85,7 @@ $RECYCLE.BIN/
 
 # End of https://www.toptal.com/developers/gitignore/api/windows,linux,macos,composer
 
-tinker.php
+_tinker*.php
 .phpunit.result.cache
 .phpunit.cache/
 composer.lock
diff --git a/README.md b/README.md
index 9d6df92..87515d2 100644
--- a/README.md
+++ b/README.md
@@ -18,7 +18,6 @@ composer require danny50610/bpe-tokeniser
 
 ### GPT-4 / GPT-3.5-Turbo (cl100k_base)
 ```php
-<?php
 use Danny50610\BpeTokeniser\EncodingFactory;
 
 $enc = EncodingFactory::createByEncodingName('cl100k_base');
@@ -26,3 +25,12 @@ $enc = EncodingFactory::createByEncodingName('cl100k_base');
 var_dump($enc->decode($enc->encode("hello world")));
 // output: string(11) "hello world"
 ```
+
+```php
+use Danny50610\BpeTokeniser\EncodingFactory;
+
+$enc = EncodingFactory::createByModelName('gpt-3.5-turbo');
+
+var_dump($enc->decode($enc->encode("hello world")));
+// output: string(11) "hello world"
+```
\ No newline at end of file