Update README.md

README.md

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 This model is created by finetuning [`EleutherAI/pythia-12b-deduped`](https://huggingface.co/EleutherAI/pythia-12b-deduped) on the [`Dahoas/synthetic-instruct-gptj-pairwise`](https://huggingface.co/datasets/Dahoas/synthetic-instruct-gptj-pairwise).
 
-You can try a [demo](https://cloud.lambdalabs.com/demos/ml/pythia-12b-deduped-synthetic-instruct) of the model hosted on [Lambda Cloud](https://lambdalabs.com/service/gpu-cloud).
+You can try a [demo](https://cloud.lambdalabs.com/demos/ml/gpt-neox-side-by-side) of the model hosted on [Lambda Cloud](https://lambdalabs.com/service/gpu-cloud).
 
 ### Model Details