# Gemini 3.8 Flash vs Yi-1.5-34B

> Gemini 3.8 Flash is the stronger model overall, scoring 59.5 to 30.2 on the Noometry Index.

- Canonical page: https://noometry.com/compare/gemini-3-8-flash-vs-yi-1-5-34b
- Last updated: 2026-10-10
- Shared benchmarks: 18

## Summary

- They share 18 benchmarks with published results for both. Gemini 3.8 Flash scores higher in 8 categories and Yi-1.5-34B in 0 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where Gemini 3.8 Flash leads 74.9 to 14.8.
- The biggest single-benchmark swing is GPQA Diamond: 95.4% for Gemini 3.8 Flash and 32% for Yi-1.5-34B.
- Yi-1.5-34B has downloadable open weights; the other is API-only.

## Snapshot

| | Gemini 3.8 Flash | Yi-1.5-34B |
|---|---|---|
| Provider | Google | 01.AI |
| Noometry Index | 59.5 | 30.2 |
| Rank | 13 | 286 |
| Context | 1.05M | — |
| Input $/M | $0.75 | — |
| Output $/M | $3.75 | — |
| Weights | Proprietary | Open |

## Coding

- Gemini 3.8 Flash: 56.4 (#17)
- Yi-1.5-34B: 31.9 (#267)

| Benchmark | Gemini 3.8 Flash | Yi-1.5-34B |
|---|---|---|
| LMArena Coding | 1512 | 1169 |
| DeepSWE | 73.8% | — |
| FrontierCode | 41.2% | — |
| CursorBench | 39.6% | — |
| LMArena WebDev | 1581 | — |
| FrontierSWE | 19.6% | — |
| SciCode | 56.6% | — |
| BigCodeBench Instruct | — | 33.9% |
| BigCodeBench Complete | — | 43.8% |
| ALE-Bench | 1,270 | — |

## Agentic & Tool Use

- Gemini 3.8 Flash: 40.3 (#22)
- Yi-1.5-34B: —

| Benchmark | Gemini 3.8 Flash | Yi-1.5-34B |
|---|---|---|
| APEX-Agents | 64.3% | — |
| GDP.pdf | 23.4% | — |
| Vending-Bench 2 | 5,094 | — |

## Reasoning

- Gemini 3.8 Flash: 64.7 (#13)
- Yi-1.5-34B: 21.5 (#195)

| Benchmark | Gemini 3.8 Flash | Yi-1.5-34B |
|---|---|---|
| LMArena Hard Prompts | 1506 | 1160 |
| NYT Connections (extended) | 97.4% | — |
| CritPt | 18.3% | — |
| Chess Puzzles | 61% | — |
| Mystery Game Puzzles | 47% | — |
| DTBench | 95.7% | — |
| LMCA | 52.9% | — |
| Surface Evolver Bench | 76.9% | — |
| Epoch Capabilities Index | 157.13 | — |

## Math

- Gemini 3.8 Flash: 65.2 (#22)
- Yi-1.5-34B: 25.3 (#248)

| Benchmark | Gemini 3.8 Flash | Yi-1.5-34B |
|---|---|---|
| LMArena Math | 1528 | 1182 |
| FrontierMath (Tiers 1-3) | 68.4% | — |
| FrontierMath Tier 4 | 22% | — |
| OTIS Mock AIME 2024-2025 | 98.9% | — |
| ProofBench | 48% | — |
| MATH Level 5 | — | 25.5% |

## Knowledge

- Gemini 3.8 Flash: 74.9 (#2)
- Yi-1.5-34B: 14.8 (#290)

| Benchmark | Gemini 3.8 Flash | Yi-1.5-34B |
|---|---|---|
| GPQA Diamond | 95.4% | 32% |
| LMArena Expert | 1529 | 1144 |
| Humanity's Last Exam | 44.5% | — |
| SimpleQA Verified | 69.7% | — |

## Multimodal

- Gemini 3.8 Flash: 40.9 (#33)
- Yi-1.5-34B: —

| Benchmark | Gemini 3.8 Flash | Yi-1.5-34B |
|---|---|---|
| LMArena Vision | 1312 | — |
| Blueprint-Bench 2 | 38.6% | — |
| Furniture Assembly | 31.7% | — |

## Multilingual

- Gemini 3.8 Flash: 57.9 (#5)
- Yi-1.5-34B: 32.5 (#251)

| Benchmark | Gemini 3.8 Flash | Yi-1.5-34B |
|---|---|---|
| LMArena Non-English | 1486 | 1121 |
| LMArena Chinese | 1547 | 1213 |
| LMArena French | 1502 | 1155 |
| LMArena German | 1470 | 1111 |
| LMArena Japanese | 1505 | 1021 |
| LMArena Korean | 1479 | 1005 |
| LMArena Russian | 1507 | 1091 |
| LMArena Spanish | 1492 | 1120 |

## Instruction Following

- Gemini 3.8 Flash: 78.2 (#11)
- Yi-1.5-34B: 59.4 (#252)

| Benchmark | Gemini 3.8 Flash | Yi-1.5-34B |
|---|---|---|
| LMArena Instruction Following | 1489 | 1139 |

## Long Context

- Gemini 3.8 Flash: 46.2 (#23)
- Yi-1.5-34B: 34.6 (#243)

| Benchmark | Gemini 3.8 Flash | Yi-1.5-34B |
|---|---|---|
| LMArena Longer Query | 1506 | 1144 |

## Writing & Preference

- Gemini 3.8 Flash: 72.1 (#16)
- Yi-1.5-34B: 37.6 (#252)

| Benchmark | Gemini 3.8 Flash | Yi-1.5-34B |
|---|---|---|
| LMArena Text | 1494 | 1173 |
| LMArena Creative Writing | 1485 | 1135 |
| LMArena Multi-Turn | 1503 | 1153 |
| EQ-Bench Creative Writing | 1748 | — |

## FAQ

### Is Gemini 3.8 Flash better than Yi-1.5-34B?

Gemini 3.8 Flash is the stronger model overall, scoring 59.5 to 30.2 on the Noometry Index.

### Is Gemini 3.8 Flash or Yi-1.5-34B better for coding?

Gemini 3.8 Flash scores higher on coding benchmarks: 56.4 versus 31.9 in the Noometry coding category.

### How many benchmarks do Gemini 3.8 Flash and Yi-1.5-34B share?

18 benchmarks have published results for both models. Gemini 3.8 Flash has 46 scored results on Noometry and Yi-1.5-34B has 21.