update readme

Author: truemagic-coder

README.md

@@ -114,13 +114,13 @@ https://github.com/user-attachments/assets/51cf6ad1-196c-44ab-99ba-0035365f1bbd
 ## Models
 
 ### Default Models 
-* `ollama` is `qwen2.5-coder:14b` (default model)
+* `ollama` is `qwen2.5-coder:14b`
 * `openai` is `gpt-4o`
 * `claude` is `claude-3-5-sonnet-20241022`
 * `gemini` is `gemini-2.0-flash`
 
 ### Select Models
-* `nemo-agent "my_prompt" --provider ollama --model nemotron`
+* `nemo-agent "my_prompt" --provider openai --model o3-mini`
 
 ### Ollama Supported Models
 * Supports any 128k input token models