Grok 4.20 0309 (Reasoning) vs Gemini 3.1 Pro Preview: The Ultimate Performance & Pricing Comparison

Deep dive into reasoning, benchmarks, and latency insights.

The Final Verdict in the Grok 4.20 0309 (Reasoning) vs Gemini 3.1 Pro Preview Showdown

After a comprehensive analysis, Gemini 3.1 Pro Preview emerges as the superior choice for users prioritizing raw intelligence and reasoning. However, Grok 4.20 0309 (Reasoning) remains a highly competitive option, especially for scenarios demanding faster response times and cost-efficiency. This detailed Grok 4.20 0309 (Reasoning) vs Gemini 3.1 Pro Preview comparison will break down every critical metric to help you make the best decision.

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Model Snapshot

Key decision metrics at a glance.

Grok 4.20 0309 (Reasoning)

xAI

Reasoning: 6
Coding: 4
Multimodal: 4
Long Context: 6
Blended Price / 1M tokens: $0.003
P95 Latency: 1000ms
Tokens per second: 246.896tokens/sec

Gemini 3.1 Pro Preview

Google

Reasoning: 6
Coding: 6
Multimodal: 5
Long Context: 7
Blended Price / 1M tokens: $0.005
P95 Latency: 1000ms
Tokens per second: 127.236tokens/sec

Overall Capabilities

The capability radar provides a holistic view of the Grok 4.20 0309 (Reasoning) vs Gemini 3.1 Pro Preview matchup. This chart illustrates each model's strengths and weaknesses at a glance, forming a cornerstone of our Grok 4.20 0309 (Reasoning) vs Gemini 3.1 Pro Preview analysis.

This radar chart visually maps the core capabilities (reasoning, coding, math proxy, multimodal, long context) of `Grok 4.20 0309 (Reasoning)` vs `Gemini 3.1 Pro Preview`.

Benchmark Breakdown

For a granular look, this chart directly compares scores across standardized benchmarks. In the critical MMLU Pro test, a key part of the Grok 4.20 0309 (Reasoning) vs Gemini 3.1 Pro Preview debate, Grok 4.20 0309 (Reasoning) scores 60 against Gemini 3.1 Pro Preview's 60. This data-driven approach is essential for any serious Grok 4.20 0309 (Reasoning) vs Gemini 3.1 Pro Preview comparison.

This grouped bar chart provides a side-by-side comparison for each benchmark metric.

Speed & Latency

Speed is a crucial factor in the Grok 4.20 0309 (Reasoning) vs Gemini 3.1 Pro Preview decision for interactive applications. The metrics below highlight the trade-offs you should weigh before shipping to production.

Time to First Token

Grok 4.20 0309 (Reasoning)300ms

Gemini 3.1 Pro Preview300ms

Tokens per Second

Grok 4.20 0309 (Reasoning)246.896

Gemini 3.1 Pro Preview127.236

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The Economics of Grok 4.20 0309 (Reasoning) vs Gemini 3.1 Pro Preview

Power is only one part of the equation. This Grok 4.20 0309 (Reasoning) vs Gemini 3.1 Pro Preview pricing analysis gives you a true sense of value.

Pricing Breakdown

Compare input and output pricing at a glance.

Real-World Cost Scenario

To process 1M input tokens and generate 250k output tokens, Grok 4.20 0309 (Reasoning) would cost $0.004, whereas Gemini 3.1 Pro Preview would cost $0.005. This practical calculation is vital for any developer considering the Grok 4.20 0309 (Reasoning) vs Gemini 3.1 Pro Preview choice.

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Which Model Wins the Grok 4.20 0309 (Reasoning) vs Gemini 3.1 Pro Preview Battle for You?

Choose Grok 4.20 0309 (Reasoning) if...

You need the most advanced reasoning capabilities available.

Your use case demands cutting-edge AI performance.

Choose Gemini 3.1 Pro Preview if...

You are developing at scale where operational costs are critical.

You prioritize cost-effectiveness over maximum performance.

Your workload requires consistent, reliable performance.

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Your Questions about the Grok 4.20 0309 (Reasoning) vs Gemini 3.1 Pro Preview Comparison

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