Gemini 3.1 Pro vs Grok 4.20 (Beta Reasoning)
Wins 2 of 3 areas
Coding · Images and charts
Wins 0 of 3 areas
—
Gemini 3.1 Pro is the stronger all-rounder.
Scores updated · 4 tests both models report · How we compare
Where each one wins
Tests won in each of the three areas where both have results. Each piece is one test, so a longer bar means more evidence; grey means the two scored within a point of each other.
Coding, reasoning and images and charts rest on a single test each.
What it costs
Prices per million tokens, roughly 750,000 words. The bars show the cost of a million tokens read plus a million written.
Every test, side by side
All 4 tests both models report. The winning score is in its model's colour; marks a score checked independently.
CodingGemini 3.1 Pro
- LMArena · WebDevGemini 3.1 Pro by 72 rating points14461374+72 rating
Images and chartsGemini 3.1 Pro
- LMArena · VisionGemini 3.1 Pro by 33 rating points12961263+33 rating
Other results1 test, not counted
Tests outside the eight areas. They are not counted above: several are summary scores built from other tests, or the same test under another name.
- Finance Agent v2Gemini 3.1 Pro by 14.54328.5+14.5
Questions people ask
Which is better, Gemini 3.1 Pro or Grok 4.20 (Beta Reasoning)?
Gemini 3.1 Pro wins two of the three areas where both have results: coding and images and charts. Grok 4.20 (Beta Reasoning) wins none. They are level on reasoning.
Which is better for coding?
Gemini 3.1 Pro. It wins the one coding test both models report.
How do you compare the two?
We use the 4 benchmark tests both models have published scores on. The verdict counts the 3 tests in the eight capability areas, and a gap under one point (ten on rating-style scales) counts as a tie. The other 1 are listed but not counted, because several are summary scores or repeat a test. Each score is the one shown on the model's own page.