I don’t know about models that are suitable for code evaluation, but the following are the restrictions on the free API, and the link below is a list of models that can be used with the API. Please note that some of them are gated models (manual approval may take time).
Basically, they are listed in order of popularity, so Qwen 2.5 Code, which is at the top, may be fine.
| User Tier | Rate Limit |
|---|---|
| Signed-up Users | 1,000 requests per day |
| PRO and Enterprise Users | 20,000 requests per day |