Cline vs Manus
AI Agent Reliability Comparison
According to StupidLLM's incident database of 64 documented AI agent failures, Cline has 1 incidents (avg severity 10.0/10) while Manus has 1 (avg severity 7.5/10). Here's how these two AI coding agents compare on reliability, failure modes, and real-world risk.
Cline
Top Failure Modes
Worst Incident
STUPID-2026-0030 10/10Manus
Top Failure Modes
Worst Incident
STUPID-2026-0063 7.5/10Comparison 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's incident database, 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.
Which has more critical-severity failures?
Cline has more critical failures (1 vs 0), indicating a higher likelihood of severe, production-impacting incidents.
What is the most dangerous failure mode for Cline?
Cline's most frequent failure mode is security vulnerability — its worst documented incident (STUPID-2026-0030) was rated 10/10 severity. Understanding these failure patterns helps teams decide whether Cline is safe for their specific use case.
What is the most dangerous failure mode for Manus?
Manus's most frequent failure mode is security vulnerability — its worst documented incident (STUPID-2026-0063) was rated 7.5/10 severity. Understanding these failure patterns helps teams decide whether Manus is safe for their specific use case.
Should I use Cline or Manus for production code?
Based on StupidLLM's reliability data, Manus has a lower average failure severity (7.5/10 vs 10.0/10), making it the statistically safer choice for production environments. However, both agents have documented critical incidents — no AI coding agent is risk-free.
How many verified incidents does each agent have?
Cline has 1 verified incidents out of 1 total, while Manus has 1 verified out of 1. Verified incidents are confirmed against source evidence (GitHub PRs, bug reports, news articles), making them the most reliable data points in StupidLLM's database.
How does Cline compare to other AI agents?
StupidLLM tracks 27 AI coding agents. Cline has 1 documented failures — placing it among the higher-risk agents in the database. See the full comparison matrix for context against all tracked agents.
How does Manus compare to other AI agents?
StupidLLM tracks 27 AI coding agents. Manus has 1 documented failures — placing it among the higher-risk agents in the database. See the full comparison matrix for context against all tracked agents.