Your rate limit depends on your usage tier, and is currently measured in requests per minute, tokens per minute, and tokens per day. If you exceed any of the rate limits you will get a 429 error - “Your account has hit a rate limit."
Remember, rate limits are set at the organization level and are defined by usage tiers. Each tier has different spend and rate limits. You can view your organization's current tier and limits in the Anthropic Console. More information on usage tiers and rate limits can be found in our API docs.