Model comparison
Gemini 2.5 Pro vs Hy4 preview
Gemini 2.5 Pro and Hy4 preview score almost the same on the Noometry Index (45.0 vs 45.3), so choose on price, context window or the category you care about most.
Last verified . 1 shared benchmarks.
Google
TencentSummary
- They share 1 benchmark with published results for both. Gemini 2.5 Pro scores higher in 0 categories and Hy4 preview in 3 categories; 3 gaps are clear of the uncertainty.
- The widest gap is in math, where Hy4 preview leads 55.7 to 32.5.
- Hy4 preview is cheaper at $0.75 / $2.25 per million input/output tokens, against $1.25 / $10 for Gemini 2.5 Pro.
- Hy4 preview has downloadable open weights; the other is API-only.
Side by side
| Gemini 2.5 Pro | Hy4 preview | |
|---|---|---|
| Provider | Tencent | |
| Noometry Index | 45.0 | 45.3 |
| Released | 2025-03-25 | 2026-08-28 |
| Weights | Proprietary | Open |
| Context window | 1.05M | 1.05M |
| Max output | 66K | 64K |
| Input $ / M tokens | $1.25 | $0.75 |
| Output $ / M tokens | $10 | $2.25 |
| Results tracked | 78 | 3 |
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Category by category
Coding Hy4 preview leads
Gemini 2.5 Pro: 42.4 (#101), Hy4 preview: 51.6 (#38)
| Benchmark | Gemini 2.5 Pro | Hy4 preview |
|---|---|---|
| LMArena WebDev | 1227 | 1632 |
| SWE-bench Verified | 57.6% | — |
| SWE-bench Verified (bash only) | 53.6% | — |
| Aider Polyglot | 83.1% | — |
| SciCode | 42.8% | — |
| GSO | 3.9% | — |
| WeirdML | 54% | — |
| LiveBench Coding | 85.9% | — |
| LMArena Coding | 1452 | — |
| CadEval | 64% | — |
| ALE-Bench | 785.52 | — |
| AlgoTune | 1.51 | — |
Agentic & Tool Use Not comparable
Gemini 2.5 Pro: 29.2 (#88), Hy4 preview: —
| Benchmark | Gemini 2.5 Pro | Hy4 preview |
|---|---|---|
| Terminal-Bench | 32.6% | — |
| GDPval | 23.3% | — |
| Remote Labor Index | 0.8% | — |
| TheAgentCompany | 30.3% | — |
| τ²-bench Banking | 13.7% | — |
| DeepResearch Bench | 42.8% | — |
| BALROG | 43.3% | — |
| LMArena Search | 1142 | — |
| METR Time Horizons | 55.4% | — |
| Vending-Bench 2 | 573.64 | — |
Reasoning Hy4 preview leads
Gemini 2.5 Pro: 28.8 (#99), Hy4 preview: 31.9 (#79)
| Benchmark | Gemini 2.5 Pro | Hy4 preview |
|---|---|---|
| ARC-AGI-2 | 4.9% | — |
| SimpleBench | 62.4% | — |
| Kagi LLM Benchmark | 70.3% | — |
| NYT Connections (extended) | — | 68.2% |
| ARC-AGI-1 | 41% | — |
| CritPt | 2% | — |
| Chess Puzzles | 20% | — |
| EnigmaEval | 5.6% | — |
| LiveBench Reasoning | 89.8% | — |
| LMArena Hard Prompts | 1455 | — |
| DTBench | 82.4% | — |
| LiveBench Data Analysis | 79.9% | — |
| LMCA | 34.8% | — |
| Epoch Capabilities Index | 145.32 | — |
| ForecastBench | 61.3 | — |
| LiveBench | 82.3% | — |
Math Hy4 preview leads
Gemini 2.5 Pro: 32.5 (#213), Hy4 preview: 55.7 (#42)
| Benchmark | Gemini 2.5 Pro | Hy4 preview |
|---|---|---|
| FrontierMath (Tiers 1-3) | 24.6% | — |
| FrontierMath Tier 4 | 0% | — |
| OTIS Mock AIME 2024-2025 | 84.7% | — |
| ProofBench | — | 75% |
| Omni-MATH | 41.6% | — |
| LiveBench Math | 90.2% | — |
| LMArena Math | 1450 | — |
| MATH Level 5 | 95.9% | — |
| FrontierMath (Feb 2025 set) | 14.1% | — |
| FrontierMath Tier 4 (v1) | 4.2% | — |
Knowledge Not comparable
Gemini 2.5 Pro: 56.0 (#46), Hy4 preview: —
| Benchmark | Gemini 2.5 Pro | Hy4 preview |
|---|---|---|
| GPQA Diamond | 85.3% | — |
| Humanity's Last Exam | 21.6% | — |
| MMLU-Pro | 86.3% | — |
| Confabulations | 10.6% | — |
| Vectara Hallucination Rate | 7% | — |
| GPQA (HELM) | 74.9% | — |
| LMArena Expert | 1452 | — |
Multimodal Not comparable
Gemini 2.5 Pro: 45.2 (#18), Hy4 preview: —
| Benchmark | Gemini 2.5 Pro | Hy4 preview |
|---|---|---|
| LMArena Vision | 1263 | — |
| GeoBench | 86% | — |
| VPCT | 48% | — |
| LMArena Document | 1421 | — |
| SpatialViz-Bench | 44.7% | — |
Multilingual Not comparable
Gemini 2.5 Pro: 55.3 (#31), Hy4 preview: —
| Benchmark | Gemini 2.5 Pro | Hy4 preview |
|---|---|---|
| LMArena Non-English | 1451 | — |
| LMArena Chinese | 1507 | — |
| LMArena French | 1472 | — |
| LMArena German | 1487 | — |
| LMArena Japanese | 1461 | — |
| LMArena Korean | 1434 | — |
| LMArena Russian | 1461 | — |
| LMArena Spanish | 1473 | — |
Instruction Following Not comparable
Gemini 2.5 Pro: 75.0 (#75), Hy4 preview: —
| Benchmark | Gemini 2.5 Pro | Hy4 preview |
|---|---|---|
| LiveBench Instruction Following | 80.6% | — |
| IFEval | 84% | — |
| LMArena Instruction Following | 1437 | — |
Long Context Not comparable
Gemini 2.5 Pro: 59.8 (#5), Hy4 preview: —
| Benchmark | Gemini 2.5 Pro | Hy4 preview |
|---|---|---|
| Fiction.LiveBench | 91.7% | — |
| LMArena Longer Query | 1449 | — |
Writing & Preference Not comparable
Gemini 2.5 Pro: 63.7 (#62), Hy4 preview: —
| Benchmark | Gemini 2.5 Pro | Hy4 preview |
|---|---|---|
| LMArena Text | 1458 | — |
| LMArena Creative Writing | 1454 | — |
| Short-Story Creative Writing | 83.8% | — |
| EQ-Bench Creative Writing | 1421 | — |
| WildBench | 85.7% | — |
| LMArena Multi-Turn | 1453 | — |
| LiveBench Language | 67.8% | — |
Frequently asked questions
Is Gemini 2.5 Pro better than Hy4 preview?
Gemini 2.5 Pro and Hy4 preview score almost the same on the Noometry Index (45.0 vs 45.3), so choose on price, context window or the category you care about most.
Which is cheaper, Gemini 2.5 Pro or Hy4 preview?
Hy4 preview is cheaper. It lists at $0.75 per million input tokens and $2.25 per million output tokens; Gemini 2.5 Pro lists at $1.25 and $10.
Is Gemini 2.5 Pro or Hy4 preview better for coding?
Hy4 preview scores higher on coding benchmarks: 51.6 versus 42.4 in the Noometry coding category.
Which has the bigger context window?
Both accept 1.05M tokens.
How many benchmarks do Gemini 2.5 Pro and Hy4 preview share?
1 benchmark has published results for both models. Gemini 2.5 Pro has 78 scored results on Noometry and Hy4 preview has 3.