Gemini 3.1 Flash-Lite Preview vs Grok 3 Mini
Compare Google and xAI AI models
Cost Comparison (1000 input + 500 output tokens, 100 requests/day)
Gemini 3.1 Flash-Lite Preview
Grok 3 Mini
Cost Differences
Grok 3 Mini costs less than Gemini 3.1 Flash-Lite Preview
Feature Comparison
| Feature | Gemini 3.1 Flash-Lite Preview | Grok 3 Mini |
|---|---|---|
| Provider | xAI | |
| Input Price | $0.25/1M tokens | $0.30/1M tokens |
| Output Price | $1.50/1M tokens | $0.50/1M tokens |
| Context Window | 1,000,000 tokens | 128,000 tokens |
| Max Output | 8,192 tokens | 131,072 tokens |
| Category | efficient | efficient |
| Capabilities | textvisioncode | textreasoningcode |
| Release Date | 3/3/2026 | 2/17/2025 |
Gemini 3.1 Flash-Lite Preview vs Grok 3 Mini: Which Should You Choose?
Choosing between Gemini 3.1 Flash-Lite Preview and Grok 3 Mini depends on your priorities: cost efficiency, context length, or raw capability. Grok 3 Mini is the more affordable option at $0.30/1M input tokens. Meanwhile, Gemini 3.1 Flash-Lite Preview offers a significantly larger context window at 1,000,000 tokens vs 128,000 for Grok 3 Mini.
These models come from different providers — Google and xAI — which means different API ecosystems, SDKs, rate limits, and terms of service. If you're already integrated with Google, switching to xAIinvolves migration effort beyond just pricing. Factor in your existing infrastructure when deciding.
Both models are in the efficient category, making this a direct head-to-head comparison. At scale — say 10,000 requests per day — the cost difference adds up: Grok 3 Mini would save you roughly $135.00/month compared to Gemini 3.1 Flash-Lite Preview. For startups and indie developers, that difference can be significant.
Output costs matter too. Gemini 3.1 Flash-Lite Preview charges $1.50/1M output tokens vs $0.50 for Grok 3 Mini. For generation-heavy workloads (content creation, code generation, summarization), output pricing often dominates your bill. Grok 3 Mini has the edge here at $0.50/1M output tokens.
Multimodal capabilities: Gemini 3.1 Flash-Lite Preview supports vision (image inputs) while Grok 3 Mini is text-only. If your application needs image understanding, this narrows your choice.
Best Use Cases
Choose Gemini 3.1 Flash-Lite Preview when:
- • Budget is a primary concern
- • You need a larger context window (1,000,000 tokens)
- • You're already using Google's API ecosystem
- • You're running high-volume, latency-sensitive workloads
Choose Grok 3 Mini when:
- • You need longer outputs (up to 131,072 tokens)
- • You're already using xAI's API ecosystem
- • You're running high-volume, latency-sensitive workloads
Try Different Scenarios
Use the calculator below to see how costs change with different usage patterns
Gemini 3.1 Flash-Lite Preview (Google)
Grok 3 Mini (xAI)
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