Model comparison
Gemini 2.5 Flash-Lite vs Hy4 preview
Hy4 preview is the stronger model overall, scoring 45.3 to 37.0 on the Noometry Index. Gemini 2.5 Flash-Lite costs 7.1× less per token, which makes it the better buy when Hy4 preview's lead doesn't matter for your workload.
Last verified . 0 shared benchmarks.
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TencentSummary
- The widest gap is in math, where Hy4 preview leads 55.7 to 38.0.
- Gemini 2.5 Flash-Lite is cheaper at $0.10 / $0.40 per million input/output tokens, against $0.83 / $2.50 for Hy4 preview.
- Hy4 preview has downloadable open weights; the other is API-only.
Side by side
| Gemini 2.5 Flash-Lite | Hy4 preview | |
|---|---|---|
| Provider | Tencent | |
| Noometry Index | 37.0 | 45.3 |
| Released | 2025-06-17 | 2026-08-28 |
| Weights | Proprietary | Open |
| Context window | 1.05M | 1.05M |
| Max output | 66K | 64K |
| Input $ / M tokens | $0.10 | $0.83 |
| Output $ / M tokens | $0.40 | $2.50 |
| Results tracked | 33 | 3 |
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Category by category
Coding Hy4 preview leads
Gemini 2.5 Flash-Lite: 38.5 (#173), Hy4 preview: 51.6 (#38)
| Benchmark | Gemini 2.5 Flash-Lite | Hy4 preview |
|---|---|---|
| LMArena WebDev | — | 1632 |
| WeirdML | 35.2% | — |
| LMArena Coding | 1373 | — |
| ALE-Bench | 325.9 | — |
Agentic & Tool Use Not comparable
Gemini 2.5 Flash-Lite: 28.0 (#96), Hy4 preview: —
| Benchmark | Gemini 2.5 Flash-Lite | Hy4 preview |
|---|---|---|
| Berkeley Function Calling Leaderboard | 36.9% | — |
Reasoning Hy4 preview leads
Gemini 2.5 Flash-Lite: 22.2 (#205), Hy4 preview: 31.9 (#79)
| Benchmark | Gemini 2.5 Flash-Lite | Hy4 preview |
|---|---|---|
| Kagi LLM Benchmark | 40.5% | — |
| NYT Connections (extended) | — | 68.2% |
| LMArena Hard Prompts | 1377 | — |
| DTBench | 62.8% | — |
| LMCA | 18.1% | — |
| Epoch Capabilities Index | 133.94 | — |
Math Hy4 preview leads
Gemini 2.5 Flash-Lite: 38.0 (#144), Hy4 preview: 55.7 (#42)
| Benchmark | Gemini 2.5 Flash-Lite | Hy4 preview |
|---|---|---|
| ProofBench | — | 75% |
| Omni-MATH | 48% | — |
| LMArena Math | 1373 | — |
Knowledge Not comparable
Gemini 2.5 Flash-Lite: 32.5 (#210), Hy4 preview: —
| Benchmark | Gemini 2.5 Flash-Lite | Hy4 preview |
|---|---|---|
| MMLU-Pro | 53.7% | — |
| Vectara Hallucination Rate | 3.3% | — |
| GPQA (HELM) | 30.9% | — |
| LMArena Expert | 1373 | — |
Multimodal Not comparable
Gemini 2.5 Flash-Lite: 29.1 (#114), Hy4 preview: —
| Benchmark | Gemini 2.5 Flash-Lite | Hy4 preview |
|---|---|---|
| LMArena Vision | 1198 | — |
| VPCT | 30% | — |
Multilingual Not comparable
Gemini 2.5 Flash-Lite: 49.3 (#134), Hy4 preview: —
| Benchmark | Gemini 2.5 Flash-Lite | Hy4 preview |
|---|---|---|
| LMArena Non-English | 1369 | — |
| LMArena Chinese | 1404 | — |
| LMArena French | 1388 | — |
| LMArena German | 1389 | — |
| LMArena Japanese | 1359 | — |
| LMArena Korean | 1360 | — |
| LMArena Russian | 1373 | — |
| LMArena Spanish | 1396 | — |
Instruction Following Not comparable
Gemini 2.5 Flash-Lite: 70.0 (#168), Hy4 preview: —
| Benchmark | Gemini 2.5 Flash-Lite | Hy4 preview |
|---|---|---|
| IFEval | 81% | — |
| LMArena Instruction Following | 1367 | — |
Long Context Not comparable
Gemini 2.5 Flash-Lite: 33.3 (#262), Hy4 preview: —
| Benchmark | Gemini 2.5 Flash-Lite | Hy4 preview |
|---|---|---|
| Fiction.LiveBench | 47.2% | — |
| LMArena Longer Query | 1373 | — |
Writing & Preference Not comparable
Gemini 2.5 Flash-Lite: 56.8 (#135), Hy4 preview: —
| Benchmark | Gemini 2.5 Flash-Lite | Hy4 preview |
|---|---|---|
| LMArena Text | 1379 | — |
| LMArena Creative Writing | 1367 | — |
| WildBench | 81.8% | — |
| LMArena Multi-Turn | 1366 | — |
Frequently asked questions
Is Gemini 2.5 Flash-Lite better than Hy4 preview?
Hy4 preview is the stronger model overall, scoring 45.3 to 37.0 on the Noometry Index. Gemini 2.5 Flash-Lite costs 7.1× less per token, which makes it the better buy when Hy4 preview's lead doesn't matter for your workload.
Which is cheaper, Gemini 2.5 Flash-Lite or Hy4 preview?
Gemini 2.5 Flash-Lite is cheaper. It lists at $0.10 per million input tokens and $0.40 per million output tokens; Hy4 preview lists at $0.83 and $2.50.
Is Gemini 2.5 Flash-Lite or Hy4 preview better for coding?
Hy4 preview scores higher on coding benchmarks: 51.6 versus 38.5 in the Noometry coding category.
Which has the bigger context window?
Both accept 1.05M tokens.
How many benchmarks do Gemini 2.5 Flash-Lite and Hy4 preview share?
0 benchmarks have published results for both models. Gemini 2.5 Flash-Lite has 33 scored results on Noometry and Hy4 preview has 3.