# GPT-5.3 Chat vs Yi-Lightning

> GPT-5.3 Chat is the stronger model overall, scoring 42.1 to 36.5 on the Noometry Index.

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

## Summary

- They share 17 benchmarks with published results for both. GPT-5.3 Chat scores higher in 8 categories and Yi-Lightning in 0 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in coding, where GPT-5.3 Chat leads 40.8 to 27.0.

## Snapshot

| | GPT-5.3 Chat | Yi-Lightning |
|---|---|---|
| Provider | OpenAI | 01.AI |
| Noometry Index | 42.1 | 36.5 |
| Rank | 109 | 206 |
| Context | 128K | — |
| Input $/M | $1.75 | — |
| Output $/M | $14 | — |
| Weights | Proprietary | Proprietary |

## Coding

- GPT-5.3 Chat: 40.8 (#124)
- Yi-Lightning: 27.0 (#315)

| Benchmark | GPT-5.3 Chat | Yi-Lightning |
|---|---|---|
| LMArena Coding | 1408 | 1313 |
| Aider Polyglot | — | 12.9% |

## Reasoning

- GPT-5.3 Chat: 27.3 (#105)
- Yi-Lightning: 24.9 (#137)

| Benchmark | GPT-5.3 Chat | Yi-Lightning |
|---|---|---|
| LMArena Hard Prompts | 1399 | 1302 |

## Math

- GPT-5.3 Chat: 35.4 (#146)
- Yi-Lightning: 33.5 (#173)

| Benchmark | GPT-5.3 Chat | Yi-Lightning |
|---|---|---|
| LMArena Math | 1389 | 1300 |

## Knowledge

- GPT-5.3 Chat: 38.2 (#137)
- Yi-Lightning: 34.8 (#182)

| Benchmark | GPT-5.3 Chat | Yi-Lightning |
|---|---|---|
| LMArena Expert | 1397 | 1286 |

## Multilingual

- GPT-5.3 Chat: 50.5 (#119)
- Yi-Lightning: 42.4 (#191)

| Benchmark | GPT-5.3 Chat | Yi-Lightning |
|---|---|---|
| LMArena Non-English | 1383 | 1269 |
| LMArena Chinese | 1433 | 1320 |
| LMArena French | 1398 | 1304 |
| LMArena German | 1384 | 1267 |
| LMArena Japanese | 1351 | 1228 |
| LMArena Korean | 1347 | 1192 |
| LMArena Russian | 1400 | 1255 |
| LMArena Spanish | 1371 | 1315 |

## Instruction Following

- GPT-5.3 Chat: 73.0 (#124)
- Yi-Lightning: 67.6 (#191)

| Benchmark | GPT-5.3 Chat | Yi-Lightning |
|---|---|---|
| LMArena Instruction Following | 1378 | 1278 |

## Long Context

- GPT-5.3 Chat: 42.6 (#115)
- Yi-Lightning: 39.4 (#176)

| Benchmark | GPT-5.3 Chat | Yi-Lightning |
|---|---|---|
| LMArena Longer Query | 1396 | 1297 |

## Writing & Preference

- GPT-5.3 Chat: 63.3 (#65)
- Yi-Lightning: 50.4 (#178)

| Benchmark | GPT-5.3 Chat | Yi-Lightning |
|---|---|---|
| LMArena Text | 1389 | 1302 |
| LMArena Creative Writing | 1356 | 1280 |
| LMArena Multi-Turn | 1413 | 1311 |
| EQ-Bench Creative Writing | 1690 | — |

## FAQ

### Is GPT-5.3 Chat better than Yi-Lightning?

GPT-5.3 Chat is the stronger model overall, scoring 42.1 to 36.5 on the Noometry Index.

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

GPT-5.3 Chat scores higher on coding benchmarks: 40.8 versus 27.0 in the Noometry coding category.

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

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