[AGE-345] [bug] Some models are not working in the playground

[mmabrouk]

The following models return an error when used to run prompts in the Playground

• OpenRouter model
  https://jam.dev/c/e6f1b8d2-d054-4002-9246-5ab9cf675223

• Perplexity AI model
  https://jam.dev/c/ad692a59-3327-49d6-a030-b177e79cd927

• groq/llama2-70b-4096 model
  https://jam.dev/c/72be261e-dd33-4c18-8026-da7268532b9a

  Let's test the calls locally and see why are they failing.

_{From SyncLinear.com | AGE-345}