Update models.md

Author: eric-urban

articles/cognitive-services/openai/concepts/models.md

@@ -70,7 +70,7 @@ While Davinci is the most capable, the other models provide significant speed ad
 
 Davinci is the most capable model and can perform any task the other models can perform, often with less instruction. For applications requiring deep understanding of the content, like summarization for a specific audience and creative content generation, Davinci produces the best results. The increased capabilities provided by Davinci require more compute resources, so Davinci costs more and isn't as fast as other models.
 
-Another area where Davinci excels is in understanding the intent of text. Davinci is excellent at solving many kinds of logic problems and explaining the motives of characters. Davinci has been proven to solve some of the most challenging AI problems involving cause and effect.
+Another area where Davinci excels is in understanding the intent of text. Davinci is excellent at solving many kinds of logic problems and explaining the motives of characters. Davinci has been able to solve some of the most challenging AI problems involving cause and effect.
 
 **Use for**: Complex intent, cause and effect, summarization for audience