# GPT-5.5 Instant vs Yi-34B

> GPT-5.5 Instant is the stronger model overall, scoring 42.5 to 27.4 on the Noometry Index.

- Canonical page: https://noometry.com/compare/gpt-5-5-instant-vs-yi-34b
- Last updated: 2026-10-10
- Shared benchmarks: 19

## Summary

- They share 19 benchmarks with published results for both. GPT-5.5 Instant 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-5.5 Instant leads 48.9 to 7.5.
- The biggest single-benchmark swing is GPQA Diamond: 82.5% for GPT-5.5 Instant and 14.7% for Yi-34B.
- Yi-34B has downloadable open weights; the other is API-only.

## Snapshot

| | GPT-5.5 Instant | Yi-34B |
|---|---|---|
| Provider | OpenAI | 01.AI |
| Noometry Index | 42.5 | 27.4 |
| Rank | 99 | 325 |
| Context | — | — |
| Input $/M | — | — |
| Output $/M | — | — |
| Weights | Proprietary | Open |

## Coding

- GPT-5.5 Instant: 43.7 (#73)
- Yi-34B: 31.8 (#269)

| Benchmark | GPT-5.5 Instant | Yi-34B |
|---|---|---|
| LMArena Coding | 1433 | 1112 |
| SciCode | 48.6% | — |

## Reasoning

- GPT-5.5 Instant: 24.2 (#149)
- Yi-34B: 20.3 (#222)

| Benchmark | GPT-5.5 Instant | Yi-34B |
|---|---|---|
| LMArena Hard Prompts | 1426 | 1104 |
| Epoch Capabilities Index | 142.48 | 117.28 |
| CritPt | 0% | — |
| Chess Puzzles | 12% | — |
| BIG-Bench Hard | — | 71.7% |

## Math

- GPT-5.5 Instant: 26.1 (#241)
- Yi-34B: 19.8 (#277)

| Benchmark | GPT-5.5 Instant | Yi-34B |
|---|---|---|
| LMArena Math | 1420 | 1114 |
| FrontierMath (Tiers 1-3) | 26.3% | — |
| FrontierMath Tier 4 | 2.4% | — |
| OTIS Mock AIME 2024-2025 | 68.1% | — |
| MATH Level 5 | — | 5.1% |
| GSM8K | — | 76% |

## Knowledge

- GPT-5.5 Instant: 48.9 (#68)
- Yi-34B: 7.5 (#304)

| Benchmark | GPT-5.5 Instant | Yi-34B |
|---|---|---|
| GPQA Diamond | 82.5% | 14.7% |
| LMArena Expert | 1409 | 1061 |
| MMLU | — | 76.3% |

## Multimodal

- GPT-5.5 Instant: 39.3 (#48)
- Yi-34B: —

| Benchmark | GPT-5.5 Instant | Yi-34B |
|---|---|---|
| LMArena Vision | 1250 | — |
| LMArena Document | 1403 | — |

## Multilingual

- GPT-5.5 Instant: 53.0 (#76)
- Yi-34B: 29.9 (#259)

| Benchmark | GPT-5.5 Instant | Yi-34B |
|---|---|---|
| LMArena Non-English | 1417 | 1079 |
| LMArena Chinese | 1457 | 1175 |
| LMArena French | 1428 | 1080 |
| LMArena German | 1410 | 1042 |
| LMArena Japanese | 1408 | 993 |
| LMArena Korean | 1393 | 959 |
| LMArena Russian | 1430 | 1050 |
| LMArena Spanish | 1430 | 1070 |

## Instruction Following

- GPT-5.5 Instant: 74.4 (#94)
- Yi-34B: 56.4 (#269)

| Benchmark | GPT-5.5 Instant | Yi-34B |
|---|---|---|
| LMArena Instruction Following | 1407 | 1091 |

## Long Context

- GPT-5.5 Instant: 43.4 (#92)
- Yi-34B: 33.2 (#259)

| Benchmark | GPT-5.5 Instant | Yi-34B |
|---|---|---|
| LMArena Longer Query | 1422 | 1094 |

## Writing & Preference

- GPT-5.5 Instant: 62.0 (#81)
- Yi-34B: 34.3 (#268)

| Benchmark | GPT-5.5 Instant | Yi-34B |
|---|---|---|
| LMArena Text | 1419 | 1129 |
| LMArena Creative Writing | 1420 | 1108 |
| LMArena Multi-Turn | 1434 | 1113 |

## FAQ

### Is GPT-5.5 Instant better than Yi-34B?

GPT-5.5 Instant is the stronger model overall, scoring 42.5 to 27.4 on the Noometry Index.

### Is GPT-5.5 Instant or Yi-34B better for coding?

GPT-5.5 Instant scores higher on coding benchmarks: 43.7 versus 31.8 in the Noometry coding category.

### How many benchmarks do GPT-5.5 Instant and Yi-34B share?

19 benchmarks have published results for both models. GPT-5.5 Instant has 27 scored results on Noometry and Yi-34B has 23.