LLMBrake vs Helicone
Per-user AI cost limits: Helicone gateway rate limits vs the in-process llmbrake library.
At a glance
| Helicone | LLMBrake | |
|---|---|---|
| Request path | Drawback: App → Helicone gateway → provider | Advantage: App → provider |
| Prompts and responses | Drawback: Stored by default (omit headers available; still sent through the gateway) | Advantage: Never read; only metadata (customer, model, tokens, cost) |
| Per-user $ limit | Advantage: Helicone-RateLimit-Policy: "500;w=3600;u=cents;s=user" + Helicone-User-Id |
Advantage: Monthly budgetUsd per customer, as a number or a function of plan |
| Window | Drawback: Rolling window (minimum 60 s) | Advantage: Calendar month, matching your billing |
| Near the limit | Drawback: No model downgrade in the rate-limit feature | Advantage: downgradeAt + downgradeMap |
| At the limit | Drawback: 429 from the gateway |
Advantage: Typed BudgetExceededError before the provider is called |
| Cost | Drawback: Free tier 10k requests/month; Pro $79/month + usage (cloud) | Advantage: Free, MIT |
| Dashboards, request logs | Advantage: Yes | Soon Hosted dashboard, early access for founding members |
Notes
- Helicone per-user limits need the
Helicone-User-Idheader; limits can also be segmented by a custom property. Self-hostable (Apache 2.0). Pricing per Helicone's pricing page, October 2026. - LLMBrake v0.1.0 covers chat-completions-style usage. Verify the bundled price table against your provider. Concurrent calls can overshoot the cap slightly.
Sources
- Helicone, Custom rate limits: https://docs.helicone.ai/features/advanced-usage/custom-rate-limits
- Helicone, Omit logs: https://docs.helicone.ai/features/advanced-usage/omit-logs
- Helicone, Pricing: https://www.helicone.ai/pricing
- LLMBrake README: https://github.com/llmbrake/llmbrake#readme
Disclosure: LLMBrake is our project. Helicone details from its docs, checked October 11, 2026. Corrections: issues.
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