Model comparison
Gemini 3.1 Pro Preview vs Hy4 preview
Gemini 3.1 Pro Preview is the stronger model overall, scoring 56.7 to 45.3 on the Noometry Index. Hy4 preview costs 4.0× less per token, which makes it the better buy when Gemini 3.1 Pro Preview's lead doesn't matter for your workload.
Last verified . 3 shared benchmarks.
Google
TencentSummary
- They share 3 benchmarks with published results for both. Gemini 3.1 Pro Preview scores higher in 2 categories and Hy4 preview in 1 category; 3 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Gemini 3.1 Pro Preview leads 71.7 to 31.9.
- The biggest single-benchmark swing is ProofBench: 26% for Gemini 3.1 Pro Preview and 75% for Hy4 preview.
- Hy4 preview is cheaper at $0.75 / $2.25 per million input/output tokens, against $2 / $12 for Gemini 3.1 Pro Preview.
- Hy4 preview has downloadable open weights; the other is API-only.
Side by side
| Gemini 3.1 Pro Preview | Hy4 preview | |
|---|---|---|
| Provider | Tencent | |
| Noometry Index | 56.7 | 45.3 |
| Released | 2026-02-19 | 2026-08-28 |
| Weights | Proprietary | Open |
| Context window | 1.05M | 1.05M |
| Max output | 66K | 64K |
| Input $ / M tokens | $2 | $0.75 |
| Output $ / M tokens | $12 | $2.25 |
| Results tracked | 71 | 3 |
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Category by category
Coding Hy4 preview leads
Gemini 3.1 Pro Preview: 42.5 (#99), Hy4 preview: 51.6 (#38)
| Benchmark | Gemini 3.1 Pro Preview | Hy4 preview |
|---|---|---|
| LMArena WebDev | 1447 | 1632 |
| SWE-bench Verified | 75.6% | — |
| DeepSWE | 11.7% | — |
| SciCode | 58.9% | — |
| GSO | 22.6% | — |
| WeirdML | 72.1% | — |
| LMArena Coding | 1484 | — |
| MirrorCode | 8.9% | — |
| ALE-Bench | 1,161 | — |
| AlgoTune | 2.02 | — |
Agentic & Tool Use Not comparable
Gemini 3.1 Pro Preview: 37.7 (#34), Hy4 preview: —
| Benchmark | Gemini 3.1 Pro Preview | Hy4 preview |
|---|---|---|
| Terminal-Bench | 80.2% | — |
| APEX-Agents | 35.3% | — |
| τ²-bench Banking | 26% | — |
| DeepResearch Bench | 47.8% | — |
| PostTrainBench | 22% | — |
| BALROG | 57% | — |
| ExploitBench | 26.1% | — |
| GBAEval | 0.8% | — |
| GDP.pdf | 17% | — |
| LMArena Search | 1211 | — |
| METR Time Horizons | 77% | — |
| Vending-Bench 2 | 3,774 | — |
Reasoning Gemini 3.1 Pro Preview leads
Gemini 3.1 Pro Preview: 71.7 (#12), Hy4 preview: 31.9 (#79)
| Benchmark | Gemini 3.1 Pro Preview | Hy4 preview |
|---|---|---|
| NYT Connections (extended) | 97.4% | 68.2% |
| ARC-AGI-2 | 77.1% | — |
| SimpleBench | 79.6% | — |
| ARC-AGI-1 | 98% | — |
| CritPt | 17.7% | — |
| Chess Puzzles | 55% | — |
| EnigmaEval | 36.8% | — |
| Thematic Generalization | 79.4% | — |
| EBR-Bench | 14.3% | — |
| LMArena Hard Prompts | 1485 | — |
| Mystery Game Puzzles | 34% | — |
| DTBench | 97.1% | — |
| LMCA | 53.8% | — |
| Epoch Capabilities Index | 154.77 | — |
| ForecastBench | 59 | — |
Math Gemini 3.1 Pro Preview leads
Gemini 3.1 Pro Preview: 62.1 (#34), Hy4 preview: 55.7 (#42)
| Benchmark | Gemini 3.1 Pro Preview | Hy4 preview |
|---|---|---|
| ProofBench | 26% | 75% |
| FrontierMath (Tiers 1-3) | 59.6% | — |
| FrontierMath Tier 4 | 26.8% | — |
| MathArena Final-Answer Competitions | 86.5% | — |
| OTIS Mock AIME 2024-2025 | 95.6% | — |
| LMArena Math | 1485 | — |
| FrontierMath (Feb 2025 set) | 36.9% | — |
| FrontierMath Tier 4 (v1) | 16.7% | — |
Knowledge Not comparable
Gemini 3.1 Pro Preview: 71.8 (#3), Hy4 preview: —
| Benchmark | Gemini 3.1 Pro Preview | Hy4 preview |
|---|---|---|
| GPQA Diamond | 94.4% | — |
| Humanity's Last Exam | 46.4% | — |
| SimpleQA Verified | 73.5% | — |
| Vectara Hallucination Rate | 10.4% | — |
| LMArena Expert | 1485 | — |
Multimodal Not comparable
Gemini 3.1 Pro Preview: 37.9 (#69), Hy4 preview: —
| Benchmark | Gemini 3.1 Pro Preview | Hy4 preview |
|---|---|---|
| LMArena Vision | 1296 | — |
| Blueprint-Bench 2 | 26.5% | — |
| Furniture Assembly | 26.7% | — |
| LMArena Document | 1444 | — |
Multilingual Not comparable
Gemini 3.1 Pro Preview: 57.0 (#12), Hy4 preview: —
| Benchmark | Gemini 3.1 Pro Preview | Hy4 preview |
|---|---|---|
| LMArena Non-English | 1477 | — |
| LMArena Chinese | 1529 | — |
| LMArena French | 1487 | — |
| LMArena German | 1491 | — |
| LMArena Japanese | 1493 | — |
| LMArena Korean | 1455 | — |
| LMArena Russian | 1498 | — |
| LMArena Spanish | 1479 | — |
Instruction Following Not comparable
Gemini 3.1 Pro Preview: 77.0 (#32), Hy4 preview: —
| Benchmark | Gemini 3.1 Pro Preview | Hy4 preview |
|---|---|---|
| LMArena Instruction Following | 1466 | — |
Long Context Not comparable
Gemini 3.1 Pro Preview: 47.4 (#18), Hy4 preview: —
| Benchmark | Gemini 3.1 Pro Preview | Hy4 preview |
|---|---|---|
| CL-bench | 20.8% | — |
| CL-bench Life | 16.9% | — |
| LMArena Longer Query | 1483 | — |
Writing & Preference Not comparable
Gemini 3.1 Pro Preview: 66.1 (#37), Hy4 preview: —
| Benchmark | Gemini 3.1 Pro Preview | Hy4 preview |
|---|---|---|
| LMArena Text | 1481 | — |
| LMArena Creative Writing | 1482 | — |
| EQ-Bench Creative Writing | 1491 | — |
| EQ-Bench 4 | 1142 | — |
| LMArena Multi-Turn | 1488 | — |
Frequently asked questions
Is Gemini 3.1 Pro Preview better than Hy4 preview?
Gemini 3.1 Pro Preview is the stronger model overall, scoring 56.7 to 45.3 on the Noometry Index. Hy4 preview costs 4.0× less per token, which makes it the better buy when Gemini 3.1 Pro Preview's lead doesn't matter for your workload.
Which is cheaper, Gemini 3.1 Pro Preview or Hy4 preview?
Hy4 preview is cheaper. It lists at $0.75 per million input tokens and $2.25 per million output tokens; Gemini 3.1 Pro Preview lists at $2 and $12.
Is Gemini 3.1 Pro Preview or Hy4 preview better for coding?
Hy4 preview scores higher on coding benchmarks: 51.6 versus 42.5 in the Noometry coding category.
Which has the bigger context window?
Both accept 1.05M tokens.
How many benchmarks do Gemini 3.1 Pro Preview and Hy4 preview share?
3 benchmarks have published results for both models. Gemini 3.1 Pro Preview has 71 scored results on Noometry and Hy4 preview has 3.