Cline vs Manus

AI Agent Reliability Comparison

Cline

1
Incidents
10.0
Avg Severity
1
Critical
0
High

Top Failure Modes

Security Vulnerability 1

Worst Incident

STUPID-2026-0030 10/10
Clinejection: an AI issue-triage workflow enabled arbitrary code execution on the CI runner

Manus

1
Incidents
7.5
Avg Severity
0
Critical
1
High

Top Failure Modes

Security Vulnerability 1

Worst Incident

STUPID-2026-0063 7.5/10
Manus AI leaked its own system prompt when a user simply asked it to read its internal directory

Comparison Summary

Metric Cline Manus
Total Incidents 1 1
Avg Severity 10.0/10 7.5/10
Critical Incidents 1 0
Top Failure Mode Security Vulnerability Security Vulnerability

Frequently Asked Questions

Is Cline or Manus more reliable?

Based on StupidLLM data, Cline has 1 documented failures (avg severity 10.0/10) while Manus has 1 (avg severity 7.5/10). Manus shows better reliability based on average severity scores.

What are the main differences between Cline and Manus failures?

Cline's most common failure mode is security vulnerability, while Manus most commonly fails via security vulnerability. Cline has 1 critical incidents vs Manus's 0.