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Summary
Gemini 3.1 Flash Lite Preview from Google scored 17.5 on Terminal-Bench (Terminus-2), placing it top 25 (rank 19 of 21) on this benchmark. This places the model in the weak band for Terminal-Bench (Terminus-2). Below the threshold for production reliance on this benchmark family. Consider only for narrow, fully-tested tasks.
Model details
- Provider: Google
- Model key:
google/gemini-3.1-flash-lite-preview - Context length: 1,048,576 tokens
- License: Proprietary
- Open weights: no
Benchmark methodology
Benchmark goal: To evaluate the model's ability to understand and execute complex coding and system administration tasks, debug issues, and generate accurate solutions across various domains.
Scoring metrics:
- Score: Binary score (1 for successful completion, 0 for failure) for each task.
Analysis
Key takeaways:
- The Gemini 3.1 Flash Lite Preview demonstrates limited capability in complex, multi-step technical problem-solving and code generation tasks.
- Its performance is notably better on diagnostic or single-step code modification tasks than on proactive system setup or algorithmic implementations.
- Significant improvements are needed in understanding and interacting with operating system environments, debugging complex codebases, and generating robust, functional solutions.
Failure modes observed
Common failure modes:
- Inability to generate executable code that achieves the desired outcome.
- Lack of understanding of shell environments and command execution flow, leading to incorrect or incomplete commands.
- Failure to correctly debug and fix provided code snippets, often missing the core issue or proposing ineffective solutions.
- Issues with file system interactions, such as creating files in specified locations or with specific content.
- Poor performance on tasks requiring continuous interaction or state tracking, like the maze exploration tasks.
Example: One recurring failure is seen in tasks involving system configuration (e.g., Git server, Nginx, Jupyter setup). The model often provides plausible-looking commands but they either contain subtle errors, are not executed in the correct sequence, or fail to account for environmental specifics, leading to non-functional setups.
Secondary metrics
- Readability score: 0.0
- Toxicity score: 0.000
- Ethics score: 0.000
Run this evaluation yourself
LayerLens evaluates Gemini 3.1 Flash Lite Preview continuously across 11+ benchmarks. To replicate this Terminal-Bench (Terminus-2) evaluation on your own model, traces, or a different benchmark configuration, open the model in $LayerLens/$.
Source: LayerLens evaluation 69a743435a24fc3a34525ba5. Updated 2026-03-03.