Hy4 is the stronger all-rounder.Gemini 3.1 Pro is better at reasoning.
Scores updated · 16 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.
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.
Hy4 costs 76% less for the same work.
The biggest differences
The tests each model wins by the widest margin, up to three each. Scores are out of 100.
Where Hy4 pulls ahead
- Multi-step tasks using many real software toolsMCP Atlas+14.5points ahead
- Command-line tasks in a real terminalTerminal-Bench 2.1+11.6points ahead
- Long, multi-file coding tasks in real codebasesSWE-bench Pro+11.5points ahead
Where Gemini 3.1 Pro pulls ahead
- Graduate-level biology, physics and chemistry questionsGPQA Diamond+1.8points ahead
Every test, side by side
All 16 tests both models report. The winning score is in its model's colour; marks a score checked independently.
CodingHy4
- LMArena · WebDevHy4 by 184 rating points14471631+184 rating
- Terminal-Bench 2.1Hy4 by 11.673.885.4+11.6
- SWE-bench ProHy4 by 11.554.265.7+11.5
- SWE-bench MultilingualHy4 by 676.982.9+6
ReasoningGemini 3.1 Pro
- GPQA DiamondGemini 3.1 Pro by 1.894.192.3+1.8
- CritPttie17.716.9tie
Other results8 tests, 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.
- DeepSWEHy4 by 54.31064.3+54.3
- CyberGymHy4 by 39.638.878.4+39.6
- SWE-MarathonHy4 by 27.9431.9+27.9
- NL2RepoHy4 by 25.533.458.9+25.5
- ToolathlonHy4 by 25.348.874.1+25.3
- Program BenchGemini 3.1 Pro by 2239.517.5+22
- PostTrainBenchHy4 by 1421.635.6+14
- OfficeQA ProGemini 3.1 Pro by 6.372.566.2+6.3
Questions people ask
Which is better, Gemini 3.1 Pro or Hy4?
Hy4 wins two of the three areas where both have results: coding and agents. Gemini 3.1 Pro wins reasoning.
Which is better for coding?
Hy4. It wins 4 of the 4 coding tests both models report; Gemini 3.1 Pro wins none.
Which is cheaper?
Gemini 3.1 Pro costs $2.00 per million input tokens and $12.00 per million output tokens; Hy4 costs $0.83 and $2.50. That makes Hy4 about 76% cheaper for the same work.
How do you compare the two?
We use the 16 benchmark tests both models have published scores on. The verdict counts the 8 tests in the eight capability areas, and a gap under one point (ten on rating-style scales) counts as a tie. The other 8 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.