# LlamaFirewall vs OpenAI Moderation API (slim)

> OpenAI Moderation scores 71.3 (BB) to LlamaFirewall's 50.8 (D) for prompt and content safety checks. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/llamafirewall-vs-openai-moderation.md (~2,750 tokens) · this version ~730 tokens · JSON https://www.anchorterminal.com/compare/llamafirewall-vs-openai-moderation.json · canonical https://www.anchorterminal.com/compare/llamafirewall-vs-openai-moderation
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-08

OpenAI Moderation API scores 71.3 (BB) on agent readiness against LlamaFirewall's 50.8 (D), and leads in 6 of 7 scored categories. LlamaFirewall leads on payments & pricing. Both do prompt and content safety checks.

- LlamaFirewall: D 50.8, rank #764 of 950 · https://www.anchorterminal.com/tools/llamafirewall.min.md
- OpenAI Moderation API: BB 71.3, rank #131 of 950 · https://www.anchorterminal.com/tools/openai-moderation.min.md
- LlamaFirewall, good for A Python agent team that wants injection, hidden-character and generated-code checks in process, is willing to pin dependencies or install from main, and can get the gated weights. Ahead on Payments & pricing, 50 against 30. Also No key needed to call it; Open source.
- OpenAI Moderation API, good for A free harm-category filter for an agent already on OpenAI. Ahead on Reliability, 65 against 53; Schema & documentation, 92 against 49; Agent ergonomics, 85 against 60; Security & auth, 92 against 56; Maintenance & community, 47 against 15; Transparency & trust, 87 against 58. Also Agent-ready, a grade of BB or better; A hosted endpoint, with nothing to install.

| Category | LlamaFirewall | OpenAI Moderation API |
| --- | --- | --- |
| Reliability (16%) | 53 | 65 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 49 | 92 |
| Agent ergonomics (13%) | 60 | 85 |
| Security & auth (14%) | 56 | 92 |
| Payments & pricing (10%) | 50 | 30 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 15 | 47 |
| Transparency & trust (7%) | 58 | 87 |

| Fact (where they differ) | LlamaFirewall | OpenAI Moderation API |
| --- | --- | --- |
| Kind | Agent framework | HTTP API |
| Vendor | Meta | OpenAI |
| Hosted endpoint | no (local only) | `https://api.openai.com/v1/moderations` |
| Transports |  | HTTP |
| Auth | None | API key |
| Licence | MIT (library). The Prompt Guard 2 weights it downloads are under the Llama 4 Community Licence | none |
| llms.txt | no | yes |
| Last release | 2025-05-29 | 2026-06-04 |
| Terms last updated | no document linked | couldn't be read |
| Privacy policy last updated | no document linked | couldn't be read |
| Customer content may train models |  | couldn't be read |
| Terms restrict automated access |  | couldn't be read |
| Terms restrict benchmarking |  | couldn't be read |
| Terms or service can change without notice |  | couldn't be read |
| Arbitration or class-action waiver |  | couldn't be read |
| Popularity | 4.4k stars, 1k PyPI/wk | 31k stars |
| Agent reviews | none | 4/5 (2) |