diff --git a/README.md b/README.md
index 239480d..8d43428 100644
--- a/README.md
+++ b/README.md
@@ -177,6 +177,7 @@ People are writing great tools and papers for improving outputs from GPT. Here a
 - [Outlines](https://github.com/normal-computing/outlines): A Python library that provides a domain-specific language to simplify prompting and constrain generation.
 - [Parea AI](https://www.parea.ai): A platform for debugging, testing, and monitoring LLM apps.
 - [Portkey](https://portkey.ai/): A platform for observability, model management, evals, and security for LLM apps.
+- [PromprArena AI](https://promptarena.ai/): A community-driven platform for exploring, submitting, and evaluating prompts tailored for leading AI models like OpenAI, Claude, DeepSeek, Llama and Gemini.
 - [Promptify](https://github.com/promptslab/Promptify): A small Python library for using language models to perform NLP tasks.
 - [PromptPerfect](https://promptperfect.jina.ai/prompts): A paid product for testing and improving prompts.
 - [Prompttools](https://github.com/hegelai/prompttools): Open-source Python tools for testing and evaluating models, vector DBs, and prompts.