# GPT-5.3 Chat vs Yi-34B

> GPT-5.3 Chat is the stronger model overall, scoring 42.8 to 27.8 on the Noometry Index.

- Canonical page: https://noometry.com/compare/gpt-5-3-chat-vs-yi-34b
- Last updated: 2026-10-12
- Shared benchmarks: 17

## Summary

- They share 17 benchmarks with published results for both. GPT-5.3 Chat scores higher in 8 categories and Yi-34B in 0 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where GPT-5.3 Chat leads 38.8 to 7.5.
- Yi-34B has downloadable open weights; the other is API-only.

## Snapshot

| | GPT-5.3 Chat | Yi-34B |
|---|---|---|
| Provider | OpenAI | 01.AI |
| Noometry Index | 42.8 | 27.8 |
| Rank | 109 | 329 |
| Context | 128K | — |
| Input $/M | $1.75 | — |
| Output $/M | $14 | — |
| Weights | Proprietary | Open |

## Coding

- GPT-5.3 Chat: 41.4 (#124)
- Yi-34B: 32.3 (#274)

| Benchmark | GPT-5.3 Chat | Yi-34B |
|---|---|---|
| LMArena Coding | 1408 | 1112 |

## Reasoning

- GPT-5.3 Chat: 28.5 (#102)
- Yi-34B: 21.2 (#226)

| Benchmark | GPT-5.3 Chat | Yi-34B |
|---|---|---|
| LMArena Hard Prompts | 1399 | 1104 |
| BIG-Bench Hard | — | 71.7% |
| Epoch Capabilities Index | — | 117.39 |

## Math

- GPT-5.3 Chat: 38.2 (#142)
- Yi-34B: 21.6 (#282)

| Benchmark | GPT-5.3 Chat | Yi-34B |
|---|---|---|
| LMArena Math | 1389 | 1114 |
| MATH Level 5 | — | 5.1% |
| GSM8K | — | 76% |

## Knowledge

- GPT-5.3 Chat: 38.8 (#140)
- Yi-34B: 7.5 (#309)

| Benchmark | GPT-5.3 Chat | Yi-34B |
|---|---|---|
| LMArena Expert | 1397 | 1061 |
| GPQA Diamond | — | 14.7% |
| MMLU | — | 76.3% |

## Multilingual

- GPT-5.3 Chat: 50.3 (#124)
- Yi-34B: 29.7 (#264)

| Benchmark | GPT-5.3 Chat | Yi-34B |
|---|---|---|
| LMArena Non-English | 1382 | 1079 |
| LMArena Chinese | 1432 | 1176 |
| LMArena French | 1397 | 1081 |
| LMArena German | 1384 | 1042 |
| LMArena Japanese | 1352 | 993 |
| LMArena Korean | 1346 | 959 |
| LMArena Russian | 1400 | 1050 |
| LMArena Spanish | 1371 | 1070 |

## Instruction Following

- GPT-5.3 Chat: 72.8 (#129)
- Yi-34B: 56.2 (#274)

| Benchmark | GPT-5.3 Chat | Yi-34B |
|---|---|---|
| LMArena Instruction Following | 1378 | 1091 |

## Long Context

- GPT-5.3 Chat: 42.6 (#120)
- Yi-34B: 33.2 (#264)

| Benchmark | GPT-5.3 Chat | Yi-34B |
|---|---|---|
| LMArena Longer Query | 1396 | 1094 |

## Writing & Preference

- GPT-5.3 Chat: 63.1 (#68)
- Yi-34B: 34.1 (#273)

| Benchmark | GPT-5.3 Chat | Yi-34B |
|---|---|---|
| LMArena Text | 1389 | 1129 |
| LMArena Creative Writing | 1355 | 1108 |
| LMArena Multi-Turn | 1412 | 1113 |
| EQ-Bench Creative Writing | 1690 | — |

## FAQ

### Is GPT-5.3 Chat better than Yi-34B?

GPT-5.3 Chat is the stronger model overall, scoring 42.8 to 27.8 on the Noometry Index.

### Is GPT-5.3 Chat or Yi-34B better for coding?

GPT-5.3 Chat scores higher on coding benchmarks: 41.4 versus 32.3 in the Noometry coding category.

### How many benchmarks do GPT-5.3 Chat and Yi-34B share?

17 benchmarks have published results for both models. GPT-5.3 Chat has 18 scored results on Noometry and Yi-34B has 23.