Gemini 3.1 Pro vs Hy3-preview
Wins 5 of 7 areas
Coding · Reasoning · Facts · Long documents · Following instructions
Wins 1 of 7 areas
Math
Gemini 3.1 Pro is the stronger all-rounder.Hy3-preview is cheaper and better at math.
Scores updated · 30 tests both models report · How we compare
Where each one wins
Tests won in each of the seven 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.
- CodingWriting and fixing software52Gemini 3.1 Pro5 of 7 tests
- ReasoningHard problems that need careful thinking30Gemini 3.1 Pro3 of 3 tests
- FactsGetting facts right instead of making them up20Gemini 3.1 Pro2 of 2 tests
- Long documentsFinding answers in very long texts10Gemini 3.1 Pro1 of 1 test
- Following instructionsDoing exactly what it is asked10Gemini 3.1 Pro1 of 1 test
- MathCompetition and research-level math01Hy3-preview1 of 1 test
- AgentsCarrying out multi-step tasks on its own33Even3 each
Math, long documents and following instructions 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.
Hy3-preview costs 95% less for the same work.
The biggest differences
The three tests each model wins by the widest margin. Scores are out of 100.
Where Gemini 3.1 Pro pulls ahead
- Follows unfamiliar, precisely checkable instructionsIFBench+29.1points ahead
- Avoids making up answers it doesn't knowAA-Omniscience · Non-hallucination+23.2points ahead
- Answers hard knowledge questions correctlyAA-Omniscience · Accuracy+22.9points ahead
Where Hy3-preview pulls ahead
- Real work tasks from 44 professionsGDPVal+13.6points ahead
- Multi-step tasks using many real software toolsMCP Atlas+9.9points ahead
- Olympiad math problems with short answersIMOAnswerBench+9points ahead
Every test, side by side
All 30 tests both models report. The winning score is in its model's colour; marks a score checked independently.
CodingGemini 3.1 Pro
- Terminal-Bench HardGemini 3.1 Pro by 2253.831.8+22
- SciCodeGemini 3.1 Pro by 10.158.748.6+10.1
- Terminal-Bench 2.1Gemini 3.1 Pro by 9.473.864.4+9.4
- LMArena · WebDevHy3-preview by 61 rating points14471508+61 rating
- SWE-bench ProHy3-preview by 3.754.257.9+3.7
- SWE-bench VerifiedGemini 3.1 Pro by 2.680.678+2.6
- SWE-bench MultilingualGemini 3.1 Pro by 1.176.975.8+1.1
AgentsEven
- GDPValHy3-preview by 13.614.728.3+13.6
- MCP AtlasHy3-preview by 9.969.279.1+9.9
- AA ApexAgentsGemini 3.1 Pro by 6.43225.6+6.4
- Terminal-Bench 4.0Gemini 3.1 Pro by 3.540.5+3.5
- BrowseCompGemini 3.1 Pro by 1.785.984.2+1.7
- τ-Bench V3 · BankingHy3-preview by 1.521.422.9+1.5
ReasoningGemini 3.1 Pro
- Humanity's Last ExamGemini 3.1 Pro by 13.54733.5+13.5
- CritPtGemini 3.1 Pro by 12.817.74.9+12.8
- GPQA DiamondGemini 3.1 Pro by 4.494.189.7+4.4
FactsGemini 3.1 Pro
- AA-Omniscience · Non-hallucinationGemini 3.1 Pro by 23.249.125.9+23.2
- AA-Omniscience · AccuracyGemini 3.1 Pro by 22.954.932+22.9
Following instructionsGemini 3.1 Pro
- IFBenchGemini 3.1 Pro by 29.177.148+29.1
Other results9 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.
- AA-OmniscienceGemini 3.1 Pro by 50.431.9-18.5+50.4
- τ²-Bench Telecom (AA run)Gemini 3.1 Pro by 28.195.667.5+28.1
- DeepSWEHy3-preview by 181028+18
- AA Agentic IndexHy3-preview by 15.310.325.6+15.3
- NL2RepoHy3-preview by 12.233.445.6+12.2
- Artificial Analysis Coding IndexGemini 3.1 Pro by 1068.858.8+10
- DeepSearchQA (F1)Hy3-preview by 9.181.991+9.1
- AA IntelligenceGemini 3.1 Pro by 4.429.725.3+4.4
- Toolathlontie48.848.5tie
Questions people ask
Which is better, Gemini 3.1 Pro or Hy3-preview?
Gemini 3.1 Pro wins five of the seven areas where both have results: coding, reasoning, facts, long documents and following instructions. Hy3-preview wins math, and costs 95% less. They are level on agents.
Which is better for coding?
Gemini 3.1 Pro. It wins 5 of the 7 coding tests both models report; Hy3-preview wins 2.
Which is cheaper?
Gemini 3.1 Pro costs $2.00 per million input tokens and $12.00 per million output tokens; Hy3-preview costs $0.14 and $0.56. That makes Hy3-preview about 95% cheaper for the same work.
How do you compare the two?
We use the 30 benchmark tests both models have published scores on. The verdict counts the 21 tests in the eight capability areas, and a gap under one point (ten on rating-style scales) counts as a tie. The other 9 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.