Google Gemini 3.1 Flash Lite preview vs OpenAI GPT 4.1 mini
Google Gemini 3.1 Flash Lite preview vs OpenAI GPT 4.1 mini: Google Gemini 3.1 Flash Lite preview is cheaper by 37% on average. Google Gemini 3.1 Flash Lite preview from OpenRouter (1,048,576-token context, reasoning, tool calls) vs. OpenAI GPT 4.1 mini from OpenRouter (1,047,576-token context, tool calls). Use Agent Command Center to A/B both in shadow mode and pick the winner per workload.
Side-by-side cost
Live workload comparison
Same workload run through both models. The cheaper one is highlighted.
3,000
01,048,576
400
065,536
5,000
01,000,000
At this workload, Google Gemini 3.1 Flash Lite preview is 27% cheaper than OpenAI GPT 4.1 mini — a savings of $74.57/month ($895/year).
Production recipe — Agent Command Center
strategy: cost-optimized
primary:
model: google-gemini-3-1-flash-lite-preview
provider: openrouter
fallback:
model: openai-gpt-4-1-mini
provider: openrouter
shadow: { sample_rate: 0.05 } # mirror 5% of traffic to compare quality live| Google Gemini 3.1 Flash Lite preview | OpenAI GPT 4.1 mini | |
|---|---|---|
| Input price | $0.250/M | $0.400/M |
| Output price | $1.50/M | $1.60/M |
| Context window | 1,048,576 | 1,047,576 |
| Max output | 65,536 | 32,768 |
| Function calling | ✓ | ✓ |
| Vision | ✓ | ✓ |
| Audio input | ✓ | — |
| Reasoning | ✓ | — |
| Prompt caching | ✓ | ✓ |
| Structured output | ✓ | ✓ |
| Pricing verified | May 12, 2026 | May 12, 2026 |