xAI: Grok 4.20 Multi-Agent Beta vs Google: Gemini 3.1 Pro Preview Custom Tools: Which AI Model Is Better?
Updated March 24, 2026· Based on independent benchmark data
Quick Verdict
For speed, Google: Gemini 3.1 Pro Preview Custom Tools wins at 117 tok/s vs 0 tok/s.
Head-to-Head Comparison
| Metric | xAI: Grok 4.20 Multi-Agent Beta | Google: Gemini 3.1 Pro Preview Custom Tools |
|---|---|---|
| Intelligence Score | N/A | 57.2 |
| Coding Score | N/A | 55.5 |
| Math Score | N/A | N/A |
| Speed (tok/s) | 0 tok/s | 117 tok/s |
| Latency (TTFT) | 0.00s | 21.91s |
| Input Price / 1M tokens | $2.00 | $2.00 |
| Output Price / 1M tokens | $6.00 | $12 |
| Context Window | 2M | 1.0M |
| Max Output Tokens | N/A | 66K |
| Input Modalities | Text + Image | Text + Audio + Image + Video + File |
| Output Modalities | Text | Text |
| Free Tier | No | No |
Detailed Analysis
Speed & Latency
Google: Gemini 3.1 Pro Preview Custom Tools generates output significantly faster at 117 tok/s compared to xAI: Grok 4.20 Multi-Agent Beta's 0 tok/s, making it Infinityx faster for streaming responses. Time to first token is 0.00s for xAI: Grok 4.20 Multi-Agent Beta vs 21.91s for Google: Gemini 3.1 Pro Preview Custom Tools, which affects perceived responsiveness in interactive applications.
Pricing
Google: Gemini 3.1 Pro Preview Custom Tools is more affordable at $2.00/1M input tokens ($12/1M output), while xAI: Grok 4.20 Multi-Agent Beta costs $2.00/1M input ($6.00/1M output). For a typical workload of 100 requests per day at 2,000 tokens each, xAI: Grok 4.20 Multi-Agent Beta would cost approximately $12.00/month vs $12.00/month for Google: Gemini 3.1 Pro Preview Custom Tools in input costs alone.
Context Window
xAI: Grok 4.20 Multi-Agent Beta offers a larger context window at 2M tokens compared to Google: Gemini 3.1 Pro Preview Custom Tools's 1.0M.
Best Use Cases
Choose Google: Gemini 3.1 Pro Preview Custom Tools when you need faster output (117 tok/s).
Choose xAI: Grok 4.20 Multi-Agent Beta if:
- ✓You want lower latency (0.00s vs 21.91s TTFT)
- ✓You need a larger context window (2M vs 1.0M)
Choose Google: Gemini 3.1 Pro Preview Custom Tools if:
- ✓You need faster throughput (117 tok/s vs 0 tok/s)
Frequently Asked Questions
Which is cheaper, xAI: Grok 4.20 Multi-Agent Beta or Google: Gemini 3.1 Pro Preview Custom Tools?
Google: Gemini 3.1 Pro Preview Custom Tools is cheaper at $2.00/1M input tokens vs $2.00/1M for xAI: Grok 4.20 Multi-Agent Beta.
Is xAI: Grok 4.20 Multi-Agent Beta faster than Google: Gemini 3.1 Pro Preview Custom Tools?
Google: Gemini 3.1 Pro Preview Custom Tools is faster, producing output at 117 tok/s compared to xAI: Grok 4.20 Multi-Agent Beta's 0 tok/s.
Can xAI: Grok 4.20 Multi-Agent Beta process images?
Yes, xAI: Grok 4.20 Multi-Agent Beta supports image input. Google: Gemini 3.1 Pro Preview Custom Tools also supports images.
Which has a larger context window, xAI: Grok 4.20 Multi-Agent Beta or Google: Gemini 3.1 Pro Preview Custom Tools?
xAI: Grok 4.20 Multi-Agent Beta has a larger context window at 2M compared to Google: Gemini 3.1 Pro Preview Custom Tools's 1.0M.
Related Comparisons
Benchmark data by Artificial Analysis
Data last synced: March 24, 2026