As an "Explore" free trial API user, you receive an initial credit of $5 that expires after three months if this is your first OpenAI account. Upgrading to the pay-as-you-go plan will increase your usage limit to $120/month.
If you're a current API customer looking to increase your usage limit beyond your existing tier, please review your Usage Limits page for information on advancing to the next tier. Should your needs exceed what's available in the 'Increasing your limits' tier or you have an unique use case, click on 'Need help?' to submit a request for a higher limit. Our team will assess your request and respond as soon as we can.