Why We Built Our Own Rate Limit Dashboard — and What It Revealed About Every $20 Tool
Tool Crucible evaluation of Why We Built Our Own Rate Limit Dashboard — and What It Revealed About Every $20 — real-world testing, tradeoffs, and current stack.
Published 2026-06-08
TL;DR: All major $20/mo AI coding tools hide their true limits. We reverse-engineered Cursor, Codex, and Claude Code rate limits via API logging — Windsurf is the only one with documented, honest constraints. Full comparison →
The Context
Four-person team doing 100+ AI-assisted hours/week. Could not budget costs or plan sprints because “unlimited” tools throttle unpredictably. Built internal proxy to log every request, token count, and throttle event across 30 days.
What We Tested
| Tool | Advertised | Actual (30-day avg) | Throttle Transparency |
|---|---|---|---|
| Cursor Pro | ”Unlimited” | ~400 fast req, then 60% slowdown | ❌ None — silent degradation |
| Codex | ”Unlimited” | ~300 complex req, then queue | ⚠️ Queue visible, no limits doc |
| Claude Code | ”Usage-based” | $0.08-0.15/hr active coding | ⚠️ Cost visible, no rate doc |
| Windsurf | ”500 fast, then slow pool” | 500 fast, then documented slow | ✅ Full docs, status bar indicator |
| Cline (BYOK) | Pay-per-token | $12-18/mo per dev | ✅ You own the keys, full control |
The Pivot Point
Sprint planning meeting: “How many AI hours can we budget?” No one could answer. Cursor showed no usage metrics. Codex showed queue depth but no limit. We instrumented OpenRouter + Anthropic APIs directly — discovered Cursor’s “unlimited” = ~400 fast requests before 60% latency increase. Windsurf’s docs matched reality exactly.
What We Use Now
Windsurf ($15) for daily IDE work — limits in status bar, predictable. Cline + OpenRouter for heavy tasks — $0.003/1K tokens (DeepSeek) to $0.015/1K (Sonnet). Team spends ~$65/mo total with zero surprise throttles. Built internal dashboard showing daily spend, token velocity, projected monthly cost.
When You’d Choose Differently
- Light usage (<50 requests/day): Any $20 tool works fine — limits never hit
- Enterprise audit requirements: Cursor/Codex have better compliance paper trails
- Team needs unified billing: Single invoice vs BYOK per-dev keys
Tool Crucible Rating
| Overall | Ease | Value | Support |
|---|---|---|---|
| ⭐⭐⭐⭐ | ⭐⭐⭐ | ⭐⭐⭐⭐⭐ | ⭐⭐⭐ |
This is part of our AI Coding Assistant evaluation series. See full comparison: AI Coding Assistant Rate Limits — The Hidden Truth
Last reviewed 2026-06-08. See our methodology and affiliate policy.