Google: Gemma 4 31B vs Gemini 3.1 Pro Preview

Compare Google: Gemma 4 31B and Gemini 3.1 Pro Preview, both from Google AI, context windows of 262K vs 1.0M, tested across 44 shared challenges. Updated April 2026.

Which is better, Google: Gemma 4 31B or Gemini 3.1 Pro Preview?

Google: Gemma 4 31B and Gemini 3.1 Pro Preview are both competitive models. Google: Gemma 4 31B costs $0.14/M input tokens vs $2/M for Gemini 3.1 Pro Preview. Context windows: 262K vs 1049K tokens. Compare their real outputs side by side below.

Key Differences Between Google: Gemma 4 31B and Gemini 3.1 Pro Preview

Google: Gemma 4 31B is made by google while Gemini 3.1 Pro Preview is from google. Google: Gemma 4 31B has a 262K token context window compared to Gemini 3.1 Pro Preview's 1049K. On pricing, Google: Gemma 4 31B costs $0.14/M input tokens vs $2/M for Gemini 3.1 Pro Preview.

Our Verdict
Google: Gemma 4 31B
Google: Gemma 4 31B
Gemini 3.1 Pro Preview
Gemini 3.1 Pro Preview

No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.

Google: Gemma 4 31B is 30x cheaper per token — worth considering if cost matters.

Too close to call
Writing DNA

Style Comparison

Similarity
98%

Google: Gemma 4 31B uses 23.8x more emoji

Google: Gemma 4 31B
Gemini 3.1 Pro Preview
57%Vocabulary54%
18wSentence Length18w
0.37Hedging0.29
7.1Bold4.9
4.0Lists3.3
0.24Emoji0.00
0.94Headings0.72
0.16Transitions0.14
Based on 23 + 23 text responses
vs

Ask them anything yourself

Google: Gemma 4 31BGemini 3.1 Pro Preview

Some models write identically. You are paying for the brand.

178 models fingerprinted across 32 writing dimensions. Free research.

Model Similarity Index

185x

price gap between models that write identically

178

models

12

clone pairs

32

dimensions

Devstral M / S
95.7%
Qwen3 Coder / Flash
95.6%
GPT-5.4 / Mini
93.3%

279 AI models invented the same fake scientist.

We read every word. 250 models. 2.14 million words. This is what we found.

AI Hallucination Index 2026
Free preview13 of 58 slides
FAQ

Common questions