Devin vs Sakana Ai Scientist
AI Agent Reliability Comparison
According to StupidLLM's incident database of 64 documented AI agent failures, Devin has 12 incidents (avg severity 4.9/10) while Sakana Ai Scientist has 1 (avg severity 2.0/10). Here's how these two AI coding agents compare on reliability, failure modes, and real-world risk.
Devin
Top Failure Modes
Worst Incident
STUPID-2026-0001 10/10Sakana Ai Scientist
Top Failure Modes
Worst Incident
STUPID-2026-0040 2/10Comparison Summary
| Metric | Devin | Sakana Ai Scientist |
|---|---|---|
| Total Incidents | 12 | 1 |
| Avg Severity | 4.9/10 | 2.0/10 |
| Critical Incidents | 3 | 0 |
| Top Failure Mode | Scope Explosion | Ignored Instructions |
Frequently Asked Questions
Is Devin or Sakana Ai Scientist more reliable?
Based on StupidLLM's incident database, Devin has 12 documented failures (avg severity 4.9/10) while Sakana Ai Scientist has 1 (avg severity 2.0/10). Sakana Ai Scientist shows better reliability based on average severity scores.
What are the main differences between Devin and Sakana Ai Scientist failures?
Devin's most common failure mode is scope explosion, while Sakana Ai Scientist most commonly fails via ignored instructions. Devin has 3 critical incidents vs Sakana Ai Scientist's 0.
Which has more critical-severity failures?
Devin has more critical failures (3 vs 0), indicating a higher likelihood of severe, production-impacting incidents.
What is the most dangerous failure mode for Devin?
Devin's most frequent failure mode is scope explosion — its worst documented incident (STUPID-2026-0001) was rated 10/10 severity. Understanding these failure patterns helps teams decide whether Devin is safe for their specific use case.
What is the most dangerous failure mode for Sakana Ai Scientist?
Sakana Ai Scientist's most frequent failure mode is ignored instructions — its worst documented incident (STUPID-2026-0040) was rated 2/10 severity. Understanding these failure patterns helps teams decide whether Sakana Ai Scientist is safe for their specific use case.
Should I use Devin or Sakana Ai Scientist for production code?
Based on StupidLLM's reliability data, Sakana Ai Scientist has a lower average failure severity (2.0/10 vs 4.9/10), 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?
Devin has 12 verified incidents out of 12 total, while Sakana Ai Scientist 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 Devin compare to other AI agents?
StupidLLM tracks 27 AI coding agents. Devin has 12 documented failures — placing it in the mid-range for reliability. See the full comparison matrix for context against all tracked agents.
How does Sakana Ai Scientist compare to other AI agents?
StupidLLM tracks 27 AI coding agents. Sakana Ai Scientist has 1 documented failures — placing it among the more reliable agents tracked. See the full comparison matrix for context against all tracked agents.