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 22 llm guided fuzzing tools tracked. 2 score above 50 (established tier). The highest-rated is google/oss-fuzz-gen at 52/100 with 1,372 stars.

Get all 22 projects as JSON

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

Open to everyone — 100 requests/day, no key needed. Get a free key for 1,000/day.

#	Tool	Score	Tier	Stars	Language
1	google/oss-fuzz-gen LLM powered fuzzing via OSS-Fuzz.	52	Established	1,372	Python
2	cyberark/FuzzyAI A powerful tool for automated LLM fuzzing. It is designed to help developers...	51	Established	1,250	Jupyter Notebook
3	prompt-security/ps-fuzz Make your GenAI Apps Safe & Secure :rocket: Test & harden your system prompt	49	Emerging	642	Python
4	pvz122/PromeFuzz PromeFuzz: A Knowledge-Driven Approach to Fuzzing Harness Generation with...	44	Emerging	50	C++
5	fuzz4all/fuzz4all 🌌️Fuzz4All: Universal Fuzzing with Large Language Models	42	Emerging	321	Python
6	ChatAFLndss/ChatAFL Large Language Model guided Protocol Fuzzing (NDSS'24)	40	Emerging	382	C
7	mnns/LLMFuzzer 🧠 LLMFuzzer - Fuzzing Framework for Large Language Models 🧠 LLMFuzzer is the...	39	Emerging	347	Python
8	QGrain/SyzGPT [ISSTA 2025] Unlocking Low Frequency Syscalls in Kernel Fuzzing with...	37	Emerging	52	Python
9	PrVrSs/circinus LLM-powered generation-based fuzzer.	36	Emerging	3	Python
10	thebabush/llvm-jutsu Anti-LLM obfuscation via finger counting	35	Emerging	182	C++
11	Su1ph3r/indago AI-powered API security fuzzer with cross-tool integration — intelligent...	34	Emerging	4	Go
12	user1342/AutoCorpus AutoCorpus is a tool backed by a large language model (LLM) for...	32	Emerging	74	Python
13	Invicti-Security/brainstorm A smarter web fuzzing tool that combines local LLM models and ffuf to...	30	Emerging	384	Python
14	amazon-science/TurboFuzzLLM TurboFuzzLLM: Turbocharging Mutation-based Fuzzing for Effectively...	29	Experimental	22	Python
15	cuhk-s3/LegoFuzz An LLM-based fuzzing framework for C compilers testing.	29	Experimental	25	C
16	seclab-yonsei/CovRL-Fuzz CovRL-Fuzz: Fuzzing JavaScript Interpreters with Coverage-Guided...	24	Experimental	41	C
17	PrVrSs/fuzz-craft Toolkit for creating fuzzing harnesses.	22	Experimental	1	Python
18	DamianWnorowski/prompt-fuzzer LLM security testing and prompt injection detection	19	Experimental	—	Rust
19	BitcoinChatGPT/DeserializeSignature-Vulnerability-Algorithm Learn about the DeserializeSignature vulnerability in Bitcoin's ECDSA...	15	Experimental	2	Jupyter Notebook
20	BitcoinChatGPT/Signature-Malleability-Vulnerability-Algorithm Signature Malleability poses a critical security risk in blockchain systems...	14	Experimental	1	Jupyter Notebook
21	ishika-0101/entropy-chaos Test APIs by generating custom attack scenarios using large language models...	14	Experimental	—	Solidity
22	IsaacAlves7/Fruzzy 🧐📄 Fruzzy is a system for spreadsheets automation and analysis.	11	Experimental	—	C#

Comparisons in this category

oss-fuzz-gen and ps-fuzz (52 vs 49) FuzzyAI and ps-fuzz (51 vs 49) oss-fuzz-gen and LLMFuzzer (52 vs 39) oss-fuzz-gen and fuzz4all (52 vs 42) FuzzyAI and LLMFuzzer (51 vs 39) oss-fuzz-gen and PromeFuzz (52 vs 44) oss-fuzz-gen and LegoFuzz (52 vs 29) oss-fuzz-gen and circinus (52 vs 36) FuzzyAI and TurboFuzzLLM (51 vs 29)