LLM Guided Fuzzing LLM Tools

Tools that use LLMs to generate test cases, mutations, or fuzzing strategies for security testing of software, protocols, compilers, and LLM systems themselves. Does NOT include general vulnerability research, cryptographic algorithm exploits, or non-LLM-based fuzzing techniques.

There are 21 llm guided fuzzing tools tracked. 3 score above 50 (established tier). The highest-rated is google/oss-fuzz-gen at 59/100 with 1,372 stars.

Get all 21 projects as JSON

curl "https://pt-edge.onrender.com/api/v1/datasets/quality?domain=llm-tools&subcategory=llm-guided-fuzzing&limit=20"

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#	Tool	Score	Tier	Stars	Language
1	google/oss-fuzz-gen LLM powered fuzzing via OSS-Fuzz.	59	Established	1,372	Python
2	cyberark/FuzzyAI A powerful tool for automated LLM fuzzing. It is designed to help developers...	58	Established	1,250	Jupyter Notebook
3	prompt-security/ps-fuzz Make your GenAI Apps Safe & Secure :rocket: Test & harden your system prompt	56	Established	642	Python
4	fuzz4all/fuzz4all 🌌️Fuzz4All: Universal Fuzzing with Large Language Models	49	Emerging	321	Python
5	ChatAFLndss/ChatAFL Large Language Model guided Protocol Fuzzing (NDSS'24)	47	Emerging	382	C
6	mnns/LLMFuzzer 🧠 LLMFuzzer - Fuzzing Framework for Large Language Models 🧠 LLMFuzzer is the...	46	Emerging	347	Python
7	pvz122/PromeFuzz PromeFuzz: A Knowledge-Driven Approach to Fuzzing Harness Generation with...	46	Emerging	50	C++
8	QGrain/SyzGPT [ISSTA 2025] Unlocking Low Frequency Syscalls in Kernel Fuzzing with...	44	Emerging	52	Python
9	PrVrSs/circinus LLM-powered generation-based fuzzer.	40	Emerging	3	Python
10	user1342/AutoCorpus AutoCorpus is a tool backed by a large language model (LLM) for...	39	Emerging	74	Python
11	thebabush/llvm-jutsu Anti-LLM obfuscation via finger counting	39	Emerging	182	C++
12	Invicti-Security/brainstorm A smarter web fuzzing tool that combines local LLM models and ffuf to...	37	Emerging	384	Python
13	Su1ph3r/indago AI-powered API security fuzzer with cross-tool integration — intelligent...	36	Emerging	4	Go
14	cuhk-s3/LegoFuzz An LLM-based fuzzing framework for C compilers testing.	36	Emerging	25	C
15	amazon-science/TurboFuzzLLM TurboFuzzLLM: Turbocharging Mutation-based Fuzzing for Effectively...	35	Emerging	22	Python
16	seclab-yonsei/CovRL-Fuzz CovRL-Fuzz: Fuzzing JavaScript Interpreters with Coverage-Guided...	31	Emerging	41	C
17	BitcoinChatGPT/Signature-Malleability-Vulnerability-Algorithm Signature Malleability poses a critical security risk in blockchain systems...	21	Experimental	1	Jupyter Notebook
18	DamianWnorowski/prompt-fuzzer LLM security testing and prompt injection detection	21	Experimental	—	Rust
19	ishika-0101/entropy-chaos Test APIs by generating custom attack scenarios using large language models...	14	Experimental	—	Solidity
20	karineek/SearchGEM5 SearchSYS: Testing System Simulators Project	14	Experimental	7	C
21	demining/Jacobian-Curve-Algorithm-Vulnerability Jacobian Curve Coordinate Manipulation: Exploring the Vulnerability of a...	11	Experimental	4	Python

Comparisons in this category

oss-fuzz-gen and ps-fuzz (59 vs 56) FuzzyAI and ps-fuzz (58 vs 56) oss-fuzz-gen and LLMFuzzer (59 vs 46) oss-fuzz-gen and fuzz4all (59 vs 49) FuzzyAI and LLMFuzzer (58 vs 46) oss-fuzz-gen and PromeFuzz (59 vs 46) oss-fuzz-gen and LegoFuzz (59 vs 36) oss-fuzz-gen and circinus (59 vs 40) FuzzyAI and TurboFuzzLLM (58 vs 35) ps-fuzz and prompt-fuzzer (56 vs 21)