What is Rate Limiting (LLM)?
Controlling the frequency of LLM API calls to prevent abuse, manage costs, and stay within provider limits.
Rate limiting in the context of LLMs means restricting how many API calls can be made within a given time window. This serves two purposes: staying within provider-imposed rate limits (requests per minute, tokens per minute) and enforcing application-level policies (per-user limits, per-project caps).
Provider rate limits are hard constraints — exceeding them results in HTTP 429 errors. Application-level rate limits are policy decisions — you might limit a free-tier user to 100 requests/day to control costs.
GateCtr enforces both types of rate limits. Budget caps act as token-based rate limits, while the Budget Firewall blocks requests that would exceed defined thresholds. This prevents both provider errors and unexpected cost spikes.
GateCtr addresses rate limiting (llm) automatically on every API call — no configuration required. The results are visible in real-time in the GateCtr dashboard, with per-request breakdowns of tokens, cost, and savings.