| Signal | Gemini 3.1 Flash Lite Preview | Delta | Grok 4 Fast |
|---|---|---|---|
Capabilities | 100 | -- | |
Benchmarks | 79 | +10 | |
Pricing | 99 | -1 | |
Context window size | 96 | -4 | |
Recency | 100 | +10 | |
Output Capacity | 80 | +6 | |
| Overall Result | 3 wins | of 6 | 2 wins |
Score History
79.6
current score
Gemini 3.1 Flash Lite Preview
right now
72.5
current score
xAI
Grok 4 Fast saves you $55.00/month
That's $660.00/year compared to Gemini 3.1 Flash Lite Preview at your current usage level of 100K calls/month.
| Metric | Gemini 3.1 Flash Lite Preview | Grok 4 Fast | Winner |
|---|---|---|---|
| Overall Score | 80 | 73 | Gemini 3.1 Flash Lite Preview |
| Rank | #38 | #80 | Gemini 3.1 Flash Lite Preview |
| Quality Rank | #38 | #80 | Gemini 3.1 Flash Lite Preview |
| Adoption Rank | #38 | #80 | Gemini 3.1 Flash Lite Preview |
| Parameters | -- | -- | -- |
| Context Window | 1049K | 2000K | Grok 4 Fast |
| Pricing | $0.25/$1.50/M | $0.20/$0.50/M | -- |
| Signal Scores | |||
| Capabilities | 100 | 100 | Gemini 3.1 Flash Lite Preview |
| Benchmarks | 79 | 70 | Gemini 3.1 Flash Lite Preview |
| Pricing | 99 | 100 | Grok 4 Fast |
| Context window size | 96 | 100 | Grok 4 Fast |
| Recency | 100 | 90 | Gemini 3.1 Flash Lite Preview |
| Output Capacity | 80 | 75 | Gemini 3.1 Flash Lite Preview |
Our score (0-100) is driven by benchmark performance (90%) from Arena Elo ratings, MMLU, GPQA, HumanEval, SWE-bench, and 15+ standardized evaluations. Capabilities and context window serve as tiebreakers (10%). Learn more about our methodology.
Scores 80/100 (rank #38), placing it in the top 87% of all 290 models tracked.
Scores 73/100 (rank #80), placing it in the top 73% of all 290 models tracked.
Gemini 3.1 Flash Lite Preview has a 7-point advantage, which typically translates to noticeably better performance on complex reasoning, code generation, and multi-step tasks.
Grok 4 Fast offers 60% better value per quality point. At 1M tokens/day, you'd spend $10.50/month with Grok 4 Fast vs $26.25/month with Gemini 3.1 Flash Lite Preview - a $15.75 monthly difference.
Both models have comparable response speeds. For most applications, the latency difference is negligible.
When latency matters most: Interactive chatbots, IDE code completion, real-time translation, and user-facing applications where response time directly impacts experience. For batch processing, background summarization, or offline analysis, latency is less critical.
Code generation & review
Based on overall model capabilities and architecture for coding tasks like generating functions, debugging, and refactoring
Customer support chatbot
Suitable for user-facing chat with competitive response times. Grok 4 Fast also offers lower per-token costs for high-volume support
Long document analysis
Larger context window (2000K tokens) can process longer documents, contracts, and research papers in a single pass
Batch data extraction
Lower output pricing ($0.50/M) reduces costs when processing thousands of records daily
Creative writing & content
Higher overall composite score (80/100) correlates with better nuance, coherence, and style in long-form content
Image understanding & OCR
Supports vision input - can analyze screenshots, diagrams, photos, and scanned documents directly
Gemini 3.1 Flash Lite Preview has a moderate advantage with a 7.099999999999994-point lead in composite score. It wins on more signal dimensions, but Grok 4 Fast has specific strengths that could make it the better choice for certain workflows.
Best for Quality
Gemini 3.1 Flash Lite Preview
Marginally better benchmark scores; both are excellent
Best for Cost
Grok 4 Fast
60% lower pricing; better value at scale
Best for Reliability
Gemini 3.1 Flash Lite Preview
Higher uptime and faster response speeds
Best for Prototyping
Gemini 3.1 Flash Lite Preview
Stronger community support and better developer experience
Best for Production
Gemini 3.1 Flash Lite Preview
Wider enterprise adoption and proven at scale
by Google
| Capability | Gemini 3.1 Flash Lite Preview | Grok 4 Fast |
|---|---|---|
| Vision (Image Input) | ||
| Function Calling | ||
| Streaming | ||
| JSON Mode | ||
| Reasoning | ||
| Web Search | ||
| Image Output |
xAI
Grok 4 Fast saves you $1.29/month
That's 57% cheaper than Gemini 3.1 Flash Lite Preview at 1,000 tokens/request and 100 requests/day.
Assumes 60% input / 40% output token ratio per request. Actual costs may vary based on your usage pattern.
| Parameter | Gemini 3.1 Flash Lite Preview | Grok 4 Fast |
|---|---|---|
| Context Window | 1.0M | 2M |
| Max Output Tokens | 65,536 | 30,000 |
| Open Source | No | No |
| Created | Mar 3, 2026 | Sep 19, 2025 |