Refactor: Use Chat Completions API

[arindamlahiri]

Fixes #52

Changes

• Refactored the code to use the Chat Completions API
  • Updated openai package to latest version - v4
• Default model - gpt-3.5-turbo
• User can switch to gpt-4
• Removed top_p param as OpenAI suggests to only alter either temperature or top_p. Keeping both made gpt-3.5-turbo not follow the constraints

# with top_p
> ai ask "biggest country in the world?"
> Command is `The biggest country in the world by land area is Russia.`

# without top_p
> ai ask "biggest country in the world?"
> Sorry, Can't answer that.

/claim #52

[algora-pbc]

💵 To receive payouts, sign up on Algora, link your Github account and connect with Stripe/Alipay.

[abhagsain]

Thanks for the PR, but we want to refactor it to GPT3.5 (Chat Model) so users can switch to GPT4 if they want to.

[arindamlahiri]

Got it. Will refactor it to use the new Chat completions API

[arindamlahiri]

Updated the PR description to reflect the new changes

[arindamlahiri]

@abhagsain can you please check this? I have refactored the code to use the new Chat Completions API

[abhagsain]

@abhagsain can you please check this? I have refactored the code to use the new Chat Completions API

Hi, @arindamlahiri
I just checked, and it's not working as expected.
The issue is for an existing user who already has AI CLI installed. It will pick the text-davinci-003 model. (because it's saved in the config.json).
Users can switch to the turbo model manually, but it would be a good UX if we had checks in place to see if the user is using the deprecated model and replace it with the new one. (Let's fallback to the cheapest one)
Also, please change the README.md as well.

Thanks

[arindamlahiri]

Hi @abhagsain
The required changes are done. Added a fallback to gpt-3.5-turbo in case the saved model is not in our defined list.

In the README, I have updated the pricing section and references to the default model.
Let me know if you want any other changes in the README.

[abhagsain]

✅ LGTM

Thanks @arindamlahiri