| name | anth-rate-limits |
| description | Implement Anthropic Claude API rate limiting, backoff, and quota management.
Use when handling 429 errors, optimizing request throughput,
or managing RPM/TPM limits across usage tiers.
Trigger with phrases like "anthropic rate limit", "claude 429",
"anthropic throttling", "claude retry", "anthropic backoff".
|
| allowed-tools | Read, Write, Edit |
| version | 1.0.0 |
| license | MIT |
| author | Jeremy Longshore <jeremy@intentsolutions.io> |
| tags | ["saas","ai","anthropic"] |
| compatible-with | claude-code |
Anthropic Rate Limits
Overview
The Claude API uses token-bucket rate limiting measured in three dimensions: requests per minute (RPM), input tokens per minute (ITPM), and output tokens per minute (OTPM). Limits increase automatically as you move through usage tiers.
Rate Limit Dimensions
| Dimension | Header | Description |
|---|
| RPM | anthropic-ratelimit-requests-limit | Requests per minute |
| ITPM | anthropic-ratelimit-tokens-limit | Input tokens per minute |
| OTPM | anthropic-ratelimit-tokens-limit | Output tokens per minute |
Limits are per-organization and per-model-class. Cached input tokens do NOT count toward ITPM limits.
Usage Tiers (Auto-Upgrade)
| Tier | Monthly Spend | Key Benefit |
|---|
| Tier 1 (Free) | $0 | Evaluation access |
| Tier 2 | $40+ | Higher RPM |
| Tier 3 | $200+ | Production-grade limits |
| Tier 4 | $2,000+ | High-throughput access |
| Scale | Custom | Custom limits via sales |
Check your current tier and limits at console.anthropic.com.
SDK Built-In Retry
import anthropic
client = anthropic.Anthropic(max_retries=5)
client = anthropic.Anthropic(max_retries=0)
const client = new Anthropic({ maxRetries: 5 });
Custom Rate Limiter with Header Awareness
