Gemini 3.1 Flash-Lite Preview vs Grok Code Fast 1
Compare Google and xAI AI models
Cost Comparison (1000 input + 500 output tokens, 100 requests/day)
Gemini 3.1 Flash-Lite Preview
Grok Code Fast 1
Cost Differences
Grok Code Fast 1 costs less than Gemini 3.1 Flash-Lite Preview
Feature Comparison
| Feature | Gemini 3.1 Flash-Lite Preview | Grok Code Fast 1 |
|---|---|---|
| Provider | xAI | |
| Input Price | $0.25/1M tokens | $0.20/1M tokens |
| Output Price | $1.50/1M tokens | $1.50/1M tokens |
| Context Window | 1,000,000 tokens | 256,000 tokens |
| Max Output | 8,192 tokens | 32,768 tokens |
| Category | efficient | standard |
| Capabilities | textvisioncode | textcodereasoning |
| Release Date | 3/3/2026 | 2/1/2026 |
Gemini 3.1 Flash-Lite Preview vs Grok Code Fast 1: Which Should You Choose?
Choosing between Gemini 3.1 Flash-Lite Preview and Grok Code Fast 1 depends on your priorities: cost efficiency, context length, or raw capability. Grok Code Fast 1 is the more affordable option at $0.20/1M input tokens — 20% cheaper than Gemini 3.1 Flash-Lite Preview. Meanwhile, Gemini 3.1 Flash-Lite Preview offers a significantly larger context window at 1,000,000 tokens vs 256,000 for Grok Code Fast 1.
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.
These models target different tiers: Gemini 3.1 Flash-Lite Preview is a efficient model while Grok Code Fast 1 is standard. This means they're optimized for different workloads. Grok Code Fast 1 targets more demanding workloads, while Gemini 3.1 Flash-Lite Preview provides a cost-effective option for everyday tasks.
Output costs matter too. Gemini 3.1 Flash-Lite Preview charges $1.50/1M output tokens vs $1.50 for Grok Code Fast 1.
Multimodal capabilities: Gemini 3.1 Flash-Lite Preview supports vision (image inputs) while Grok Code Fast 1 is text-only. If your application needs image understanding, this narrows your choice.
Best Use Cases
Choose Gemini 3.1 Flash-Lite Preview when:
- • 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 Code Fast 1 when:
- • Budget is a primary concern
- • You need longer outputs (up to 32,768 tokens)
- • You're already using xAI's API ecosystem
Try Different Scenarios
Use the calculator below to see how costs change with different usage patterns
Gemini 3.1 Flash-Lite Preview (Google)
Grok Code Fast 1 (xAI)
Start using Gemini 3.1 Flash-Lite Preview today
Sign Up for Google →Start using Grok Code Fast 1 today
Sign Up for xAI →