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Augustus vs RedForge

Augustus

github.com

RedForge

github.com

Side by side

FigureAugustusRedForge
Price fromFreeFree
Free planYesYes
Free trial——
Open source——
WindowsYes—
macOSYes—
LinuxYesYes
API—Yes
Self-hostedYesYes
Plans published11
Spec score · AI Security Testing Tools8.2 (#10)7.7 (#17)
DetectorsIt includes 90+ detectors such as pattern matching, LLM-as-a-judge, HarmJudge, Perspective API, and unsafe content detection.The README lists seven detector types, including YARA-style, similarity, refusal, regex, keyword, code, and unsafe-content detectors.
LicenseThe repository identifies Augustus as licensed under Apache 2.0.The project is released under the Apache 2.0 license, and the README says probe payloads are released under CC0.
ProvidersIt supports 28 LLM provider categories with 43 generator variants, including OpenAI, Anthropic, Azure OpenAI, AWS Bedrock, Vertex AI, Ollama, and custom REST endpoints.The README lists provider adapters for OpenAI, Anthropic, Google Gemini, AWS Bedrock, Azure OpenAI, Mistral, Ollama, HuggingFace, and generic REST endpoints.
PurposeAugustus is a Go-based LLM vulnerability scanner for security professionals that tests models against adversarial attacks and produces vulnerability reports.RedForge is an LLM security testing platform for red teaming and vulnerability scanning.
ReportsScan results can be output as tables, JSON, JSONL, or HTML reports.Scans automatically produce JSON, JSONL audit, and failures reports, with additional HTML, Markdown, SARIF, JSON, audit, and failures formats.

Plans

Augustus

  • AugustusFree

Augustus pricing →

RedForge

  • RedForgeFree

RedForge pricing →

In their own words

Augustus

Augustus is a free, self-hosted Go scanner for security professionals assessing large language models. It runs adversarial probes and produces vulnerability reports, with more than 210 probes across 47 attack categories, including jailbreaks, prompt injection, data extraction, safety benchmarks, and agent attacks. It supports 28 provider categories and 43 generator variants, including hosted providers, Ollama, and custom REST endpoints. More than 90 detectors cover approaches such as pattern matching, LLM-as-a-judge, HarmJudge, Perspective API, and unsafe-content detection; seven prompt transformations include encoding, paraphrase, poetry, low-resource-language translation, and case changes. Results can be written as tables, JSON, JSONL, or HTML. The project lists concurrent scanning, rate limits, retries, and timeout handling. Augustus compiles to a portable single binary and can be installed with Go or built from source; the README requires Go 1.27.0 or later. It is Apache 2.0 licensed. The project is intended for authorized security testing, and users are told to test only systems they own or have permission to assess. Provider API use may require credentials.

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RedForge

RedForge is a free, open-source LLM security testing platform for red teaming and vulnerability scanning. It runs on Linux, through an API and as self-hosted software. The project lists more than 49 probes, full OWASP LLM Top 10 coverage and YAML probe additions without Python. Attack modules include PAIR, Crescendo multi-turn escalation, Skeleton Key, many-shot jailbreaking and GCG adversarial suffixes. Its mutation engine expands two payloads into 37 variants using encoding, Unicode, cognitive reframing and structural injection strategies. Provider adapters cover OpenAI, Anthropic, Google Gemini, AWS Bedrock, Azure OpenAI, Mistral, Ollama, HuggingFace and generic REST endpoints. Ollama runs locally without an API key. Scans create JSON, JSONL audit and failures reports, with HTML, Markdown and SARIF also available. Compliance reports cover NIST AI RMF, EU AI Act, ISO/IEC 42001, GDPR and OWASP LLM Top 10. RedForge is Apache 2.0 software for authorized use.

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