# Guardrails review

> Adding guardrails to large language models.

Devtoolwatch Board, the week of Oct 25–31, 2026. Canonical page: https://index.devtoolwatch.com/tools/guardrails/

## Guardrails at a glance

- **Category:** [Evals and observability](https://index.devtoolwatch.com/categories/evals-and-observability/)
- **Website:** [www.guardrailsai.com/docs](https://www.guardrailsai.com/docs)

## Usage data (the week of Oct 25–31, 2026)

- Board rank: #265 overall, #14 in Evals and observability, momentum score 36
- Downloads that week: 33.3k (+32% vs 4-week average)
- New GitHub stars per week (last 12 weeks): Aug 9: 30; Aug 16: 28; Aug 23: 22; Aug 30: 28; Sep 6: 43; Sep 13: 31; Sep 20: 20; Sep 27: 34; Oct 4: 26; Oct 11: 29; Oct 18: 28; Oct 25: 14

## Guardrails alternatives

| Rank | Tool | Stars | Downloads/wk |
|---|---|---|---|
| #1 | [SkillSpector](https://index.devtoolwatch.com/tools/nvidia-skillspector/) | 23.7k | – |
| #2 | [Judgeval](https://index.devtoolwatch.com/tools/judgmentlabs-judgeval/) | 1.1k | 80.2k |
| #3 | [A.I.G (AI-Infra-Guard)](https://index.devtoolwatch.com/tools/tencent-ai-infra-guard/) | 7.2k | – |
| #4 | [Langfuse](https://index.devtoolwatch.com/tools/langfuse/) | 36.8k | 9.8M |
| #5 | [Opik](https://index.devtoolwatch.com/tools/opik/) | 23.1k | 709.1k |
| #6 | [promptfoo](https://index.devtoolwatch.com/tools/promptfoo/) | 26.7k | 1.2M |

## Guardrails FAQ

### How popular is Guardrails?

Guardrails has 7.6k GitHub stars as of Nov 1, 2026. It gained 14 new stars in the week of Oct 25–31, 2026, against a 12-week average of 28 a week. Its main package had 33.3k downloads that week, +32% against its own 4-week average. That made it #14 among LLM evals and observability tools on the Devtoolwatch Board.

### What are the best alternatives to Guardrails?

Other LLM evals and observability tools on the Devtoolwatch Board in the week of Oct 25–31, 2026, by momentum: SkillSpector (#1), Judgeval (#2), A.I.G (AI-Infra-Guard) (#3), Langfuse (#4), Opik (#5). The alternatives table above has their numbers.

## Sources

1. [Devtoolwatch Board, the week of Oct 25–31, 2026](https://index.devtoolwatch.com/)