Can Gemma 4 Beat Gemini 3.1 Pro at Coding?

Is a $20/month Google AI Pro account worth it versus running Gemma 4 31B on OpenRouter pay-as-you-go? This Ship-Bench run was designed to answer that question across a realistic coding workflow rather than a single coding prompt. Hypothesis: Gemini's larger model size would show clear advantages over Gemma's smaller 31B parameters especially when it comes to working through problems. Key Insights Gemini finished with an 86.6 average across the five roles and passed 4 of 5 gates, while Gemma fini