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Are there any proven open-source frameworks for detecting jailbreak attempts in custom LLM applications before they reach the inference endpoint?

ChatGPTgpt-65 queries11/1/2026
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The searches the AI actually ran for this prompt.

SEED QUERY
Are there any proven open-source frameworks for detecting jailbreak attempts in custom LLM applications before they reach the inference endpoint?
5 real searches · 1 real-search pass
open source runtime prompt injection jailbreak detection frameworks LLM Guard Vigil Rebuff Prompt Guard 2026Google ↗
OBSERVEDComparison
GitHub llm-guard prompt injection scanner documentation open sourceGoogle ↗
OBSERVEDInstruction
Vigil prompt injection scanner GitHub open source LLMGoogle ↗
OBSERVEDComparison
Meta Prompt Guard 86M model official announcement jailbreak prompt injectionGoogle ↗
OBSERVEDOther / navigational
NeMo Guardrails jailbreak detection input rails documentationGoogle ↗
OBSERVEDInstruction

Badge and edge weight = share of passes that produced the query. Hover a query for its intent and routing format.

Query classes

Google's semantic query class for every sub-query: what kind of answer each search is after, simulated vs real.

ChatGPT real searches (5)
Short factOther / navigational20%Comparison40%ConsequenceReasonDefinitionInstruction40%Yes / no

Classes come from the query-classifier (a local Laya model). 5 of 5 calls are low-confidence (under 50%) — hover a query in the table to see its confidence.

Searches and sources

ChatGPT5 real searches · gpt-6
open source runtime prompt injection jailbreak detection frameworks LLM Guard Vigil Rebuff Prompt Guard 2026 Google ↗
GitHub llm-guard prompt injection scanner documentation open source Google ↗
Vigil prompt injection scanner GitHub open source LLM Google ↗
Meta Prompt Guard 86M model official announcement jailbreak prompt injection Google ↗
NeMo Guardrails jailbreak detection input rails documentation Google ↗

Queries

5 queries · click a column to sort
Query / typeSearchIntentQuery classRouting formatClusterFreq ↓Weight
open source runtime prompt injection jailbreak detection frameworks LLM Guard Vigil Rebuff Prompt Guard 2026
OBSERVED
Google ↗
AI Mode ↗
—Comparison——1x
of 1
GitHub llm-guard prompt injection scanner documentation open source
OBSERVED
Google ↗
AI Mode ↗
—Instruction——1x
of 1
Vigil prompt injection scanner GitHub open source LLM
OBSERVED
Google ↗
AI Mode ↗
—Comparison——1x
of 1
Meta Prompt Guard 86M model official announcement jailbreak prompt injection
OBSERVED
Google ↗
AI Mode ↗
—Other / navigational——1x
of 1
NeMo Guardrails jailbreak detection input rails documentation
OBSERVED
Google ↗
AI Mode ↗
—Instruction——1x
of 1