#16068 [Feature]: Support Exponential Backoff for completion()
### The Feature
Configurable retry delay and exponential backoff/jitter for `completion()` api.
### Motivation, pitch
The `completion()` api only allows to configure the `num_retries` for the `completion` and `acompletion` functions. It would be useful to be able to specify the retry delay and have exponential backoff/jitter ability. Currently this is only available via the litellm `Router`.
https://docs.litellm.ai/docs/completion/input#litellm-specific-params
Thank you
### LiteLLM is hiring a founding backend engineer, are you interested in joining us and shipping to all our users?
No
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