# GPT-6.1 Sol vs Yi-Lightning

> GPT-6.1 Sol is the stronger model overall, scoring 65.6 to 37.1 on the Noometry Index.

- Canonical page: https://noometry.com/compare/gpt-6-1-sol-vs-yi-lightning
- Last updated: 2026-10-10
- Shared benchmarks: 12

## Summary

- They share 12 benchmarks with published results for both. GPT-6.1 Sol scores higher in 8 categories and Yi-Lightning in 0 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in math, where GPT-6.1 Sol leads 93.7 to 36.2.

## Snapshot

| | GPT-6.1 Sol | Yi-Lightning |
|---|---|---|
| Provider | OpenAI | 01.AI |
| Noometry Index | 65.6 | 37.1 |
| Rank | 6 | 209 |
| Context | 1.05M | — |
| Input $/M | $2 | — |
| Output $/M | $10 | — |
| Weights | Proprietary | Proprietary |

## Coding

- GPT-6.1 Sol: 63.2 (#8)
- Yi-Lightning: 27.4 (#320)

| Benchmark | GPT-6.1 Sol | Yi-Lightning |
|---|---|---|
| LMArena Coding | 1487 | 1312 |
| DeepSWE | 75.2% | — |
| FrontierCode | 50.2% | — |
| Aider Polyglot | — | 12.9% |
| LMArena WebDev | 1755 | — |
| SciCode | 55.8% | — |

## Agentic & Tool Use

- GPT-6.1 Sol: 39.6 (#26)
- Yi-Lightning: —

| Benchmark | GPT-6.1 Sol | Yi-Lightning |
|---|---|---|
| APEX-Agents | 60% | — |
| GDP.pdf | 32% | — |

## Reasoning

- GPT-6.1 Sol: 81.9 (#2)
- Yi-Lightning: 25.9 (#139)

| Benchmark | GPT-6.1 Sol | Yi-Lightning |
|---|---|---|
| LMArena Hard Prompts | 1466 | 1302 |
| ARC-AGI-2 | 94.2% | — |
| NYT Connections (extended) | 95.5% | — |
| ARC-AGI-1 | 98.5% | — |
| CritPt | 31.7% | — |
| Chess Puzzles | 61% | — |
| EBR-Bench | 54.3% | — |
| Mystery Game Puzzles | 80% | — |
| Epoch Capabilities Index | 166.09 | — |

## Math

- GPT-6.1 Sol: 93.7 (#1)
- Yi-Lightning: 36.2 (#172)

| Benchmark | GPT-6.1 Sol | Yi-Lightning |
|---|---|---|
| LMArena Math | 1464 | 1300 |
| FrontierMath (Tiers 1-3) | 93.7% | — |
| FrontierMath Tier 4 | 100% | — |
| OTIS Mock AIME 2024-2025 | 100% | — |
| ProofBench | 99% | — |

## Knowledge

- GPT-6.1 Sol: 71.8 (#4)
- Yi-Lightning: 35.4 (#185)

| Benchmark | GPT-6.1 Sol | Yi-Lightning |
|---|---|---|
| LMArena Expert | 1502 | 1286 |
| GPQA Diamond | 95.4% | — |
| SimpleQA Verified | 73.9% | — |

## Multimodal

- GPT-6.1 Sol: 52.7 (#5)
- Yi-Lightning: —

| Benchmark | GPT-6.1 Sol | Yi-Lightning |
|---|---|---|
| LMArena Vision | 1288 | — |
| Furniture Assembly | 80% | — |

## Multilingual

- GPT-6.1 Sol: 54.3 (#46)
- Yi-Lightning: 42.2 (#196)

| Benchmark | GPT-6.1 Sol | Yi-Lightning |
|---|---|---|
| LMArena Non-English | 1438 | 1269 |
| LMArena Chinese | 1477 | 1320 |
| LMArena Russian | 1455 | 1255 |
| LMArena French | — | 1305 |
| LMArena German | — | 1267 |
| LMArena Japanese | — | 1228 |
| LMArena Korean | — | 1192 |
| LMArena Spanish | — | 1315 |

## Instruction Following

- GPT-6.1 Sol: 77.0 (#29)
- Yi-Lightning: 67.4 (#196)

| Benchmark | GPT-6.1 Sol | Yi-Lightning |
|---|---|---|
| LMArena Instruction Following | 1468 | 1278 |

## Long Context

- GPT-6.1 Sol: 44.9 (#54)
- Yi-Lightning: 39.4 (#181)

| Benchmark | GPT-6.1 Sol | Yi-Lightning |
|---|---|---|
| LMArena Longer Query | 1465 | 1297 |

## Writing & Preference

- GPT-6.1 Sol: 63.6 (#63)
- Yi-Lightning: 50.2 (#184)

| Benchmark | GPT-6.1 Sol | Yi-Lightning |
|---|---|---|
| LMArena Text | 1447 | 1302 |
| LMArena Creative Writing | 1432 | 1280 |
| LMArena Multi-Turn | 1449 | 1311 |

## FAQ

### Is GPT-6.1 Sol better than Yi-Lightning?

GPT-6.1 Sol is the stronger model overall, scoring 65.6 to 37.1 on the Noometry Index.

### Is GPT-6.1 Sol or Yi-Lightning better for coding?

GPT-6.1 Sol scores higher on coding benchmarks: 63.2 versus 27.4 in the Noometry coding category.

### How many benchmarks do GPT-6.1 Sol and Yi-Lightning share?

12 benchmarks have published results for both models. GPT-6.1 Sol has 34 scored results on Noometry and Yi-Lightning has 18.