# Chatgpt 4o Latest 20250326 vs Yi-1.5-34B

> Chatgpt 4o Latest 20250326 is the stronger model overall, scoring 43.2 to 30.2 on the Noometry Index.

- Canonical page: https://noometry.com/compare/chatgpt-4o-vs-yi-1-5-34b
- Last updated: 2026-10-10
- Shared benchmarks: 17

## Summary

- They share 17 benchmarks with published results for both. Chatgpt 4o Latest 20250326 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 writing & preference, where Chatgpt 4o Latest 20250326 leads 62.8 to 37.6.
- Yi-1.5-34B has downloadable open weights; the other is API-only.

## Snapshot

| | Chatgpt 4o Latest 20250326 | Yi-1.5-34B |
|---|---|---|
| Provider | OpenAI | 01.AI |
| Noometry Index | 43.2 | 30.2 |
| Rank | 84 | 286 |
| Context | — | — |
| Input $/M | — | — |
| Output $/M | — | — |
| Weights | Proprietary | Open |

## Coding

- Chatgpt 4o Latest 20250326: 41.0 (#122)
- Yi-1.5-34B: 31.9 (#267)

| Benchmark | Chatgpt 4o Latest 20250326 | Yi-1.5-34B |
|---|---|---|
| LMArena Coding | 1413 | 1169 |
| BigCodeBench Instruct | — | 33.9% |
| BigCodeBench Complete | — | 43.8% |

## Reasoning

- Chatgpt 4o Latest 20250326: 32.8 (#64)
- Yi-1.5-34B: 21.5 (#195)

| Benchmark | Chatgpt 4o Latest 20250326 | Yi-1.5-34B |
|---|---|---|
| LMArena Hard Prompts | 1424 | 1160 |
| Kagi LLM Benchmark | 75% | — |

## Math

- Chatgpt 4o Latest 20250326: 35.8 (#134)
- Yi-1.5-34B: 25.3 (#248)

| Benchmark | Chatgpt 4o Latest 20250326 | Yi-1.5-34B |
|---|---|---|
| LMArena Math | 1407 | 1182 |
| MATH Level 5 | — | 25.5% |

## Knowledge

- Chatgpt 4o Latest 20250326: 38.7 (#131)
- Yi-1.5-34B: 14.8 (#290)

| Benchmark | Chatgpt 4o Latest 20250326 | Yi-1.5-34B |
|---|---|---|
| LMArena Expert | 1400 | 1144 |
| GPQA Diamond | — | 32% |
| Confabulations | 16.6% | — |

## Multimodal

- Chatgpt 4o Latest 20250326: 38.9 (#54)
- Yi-1.5-34B: —

| Benchmark | Chatgpt 4o Latest 20250326 | Yi-1.5-34B |
|---|---|---|
| LMArena Vision | 1243 | — |

## Multilingual

- Chatgpt 4o Latest 20250326: 53.1 (#72)
- Yi-1.5-34B: 32.5 (#251)

| Benchmark | Chatgpt 4o Latest 20250326 | Yi-1.5-34B |
|---|---|---|
| LMArena Non-English | 1419 | 1121 |
| LMArena Chinese | 1456 | 1213 |
| LMArena French | 1447 | 1155 |
| LMArena German | 1424 | 1111 |
| LMArena Japanese | 1406 | 1021 |
| LMArena Korean | 1397 | 1005 |
| LMArena Russian | 1429 | 1091 |
| LMArena Spanish | 1435 | 1120 |

## Instruction Following

- Chatgpt 4o Latest 20250326: 74.2 (#102)
- Yi-1.5-34B: 59.4 (#252)

| Benchmark | Chatgpt 4o Latest 20250326 | Yi-1.5-34B |
|---|---|---|
| LMArena Instruction Following | 1403 | 1139 |

## Long Context

- Chatgpt 4o Latest 20250326: 43.1 (#104)
- Yi-1.5-34B: 34.6 (#243)

| Benchmark | Chatgpt 4o Latest 20250326 | Yi-1.5-34B |
|---|---|---|
| LMArena Longer Query | 1413 | 1144 |

## Writing & Preference

- Chatgpt 4o Latest 20250326: 62.8 (#68)
- Yi-1.5-34B: 37.6 (#252)

| Benchmark | Chatgpt 4o Latest 20250326 | Yi-1.5-34B |
|---|---|---|
| LMArena Text | 1429 | 1173 |
| LMArena Creative Writing | 1406 | 1135 |
| LMArena Multi-Turn | 1454 | 1153 |
| EQ-Bench Creative Writing | 1501 | — |

## FAQ

### Is Chatgpt 4o Latest 20250326 better than Yi-1.5-34B?

Chatgpt 4o Latest 20250326 is the stronger model overall, scoring 43.2 to 30.2 on the Noometry Index.

### Is Chatgpt 4o Latest 20250326 or Yi-1.5-34B better for coding?

Chatgpt 4o Latest 20250326 scores higher on coding benchmarks: 41.0 versus 31.9 in the Noometry coding category.

### How many benchmarks do Chatgpt 4o Latest 20250326 and Yi-1.5-34B share?

17 benchmarks have published results for both models. Chatgpt 4o Latest 20250326 has 21 scored results on Noometry and Yi-1.5-34B has 21.