docs: add contribution guidelines and improve intro text

Add invitation for users to submit PRs or issues for new providers.
Minor text improvements to donation message.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
2026-03-25 21:22:20 +07:00
parent 97279fc784
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Penny-Pincher Provider, list of awesome cheap (or almost free) LLM provider that suitable for people who unwilling to pay for AI.
*If you find this helpful, you can support me by donate or just register with my referral link. Thank you*
If you know or think other providers, welcome to create a pull request or [create new issue by click here](https://github.com/tiennm99/penny-pincher-provider/issues/new), I will check and add to this list if I have time. Thank you!
*If you find this helpful, you can support me by donate or just register with my referral link. Thank you very much!*
## Providers support coding plans