Gemini 3.1 Pro Preview vs Grok 4.1 Fast (Reasoning): The Ultimate Performance & Pricing Comparison

Deep dive into reasoning, benchmarks, and latency insights.

Model Snapshot

Key decision metrics at a glance.

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
113.882tokens/sec
Grok 4.1 Fast (Reasoning)
xAI
Reasoning
9
Coding
3
Multimodal
3
Long Context
5
Blended Price / 1M tokens
$0.000
P95 Latency
1000ms
Tokens per second
158.483tokens/sec

Overall Capabilities

The capability radar provides a holistic view of the Gemini 3.1 Pro Preview vs Grok 4.1 Fast (Reasoning) matchup. This chart illustrates each model's strengths and weaknesses at a glance, forming a cornerstone of our Gemini 3.1 Pro Preview vs Grok 4.1 Fast (Reasoning) analysis.

This radar chart visually maps the core capabilities (reasoning, coding, math proxy, multimodal, long context) of `Gemini 3.1 Pro Preview` vs `Grok 4.1 Fast (Reasoning)`.

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 Gemini 3.1 Pro Preview vs Grok 4.1 Fast (Reasoning) debate, Gemini 3.1 Pro Preview scores 60 against Grok 4.1 Fast (Reasoning)'s 90. This data-driven approach is essential for any serious Gemini 3.1 Pro Preview vs Grok 4.1 Fast (Reasoning) comparison.

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

Speed & Latency

Speed is a crucial factor in the Gemini 3.1 Pro Preview vs Grok 4.1 Fast (Reasoning) decision for interactive applications. The metrics below highlight the trade-offs you should weigh before shipping to production.

Time to First Token
Gemini 3.1 Pro Preview300ms
Grok 4.1 Fast (Reasoning)300ms
Tokens per Second
Gemini 3.1 Pro Preview113.882
Grok 4.1 Fast (Reasoning)158.483

The Economics of Gemini 3.1 Pro Preview vs Grok 4.1 Fast (Reasoning)

Power is only one part of the equation. This Gemini 3.1 Pro Preview vs Grok 4.1 Fast (Reasoning) pricing analysis gives you a true sense of value.

Pricing Breakdown
Compare input and output pricing at a glance.

Which Model Wins the Gemini 3.1 Pro Preview vs Grok 4.1 Fast (Reasoning) Battle for You?

Choose Gemini 3.1 Pro Preview if...
Cost is a secondary concern to power in your Gemini 3.1 Pro Preview vs Grok 4.1 Fast (Reasoning) decision.
You need the most advanced reasoning capabilities available.
Your use case demands cutting-edge AI performance.
Choose Grok 4.1 Fast (Reasoning) if...
You need a highly responsive model for user-facing applications.
Your budget is a primary consideration in the Gemini 3.1 Pro Preview vs Grok 4.1 Fast (Reasoning) choice.
You are developing at scale where operational costs are critical.

Your Questions about the Gemini 3.1 Pro Preview vs Grok 4.1 Fast (Reasoning) Comparison