# ERNIE 5.1 vs Grok-2 (Dec 2024)

> ERNIE 5.1 is the stronger model overall, scoring 43.8 to 33.7 on the Noometry Index.

- Canonical page: https://noometry.com/compare/ernie-5-1-vs-grok-2
- Last updated: 2026-10-10
- Shared benchmarks: 17

## Summary

- They share 17 benchmarks with published results for both. ERNIE 5.1 scores higher in 8 categories and Grok-2 (Dec 2024) in 0 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in math, where ERNIE 5.1 leads 40.3 to 20.8.

## Snapshot

| | ERNIE 5.1 | Grok-2 (Dec 2024) |
|---|---|---|
| Provider | Baidu | xAI |
| Noometry Index | 43.8 | 33.7 |
| Rank | 83 | 239 |
| Context | — | — |
| Input $/M | — | — |
| Output $/M | — | — |
| Weights | Proprietary | Proprietary |

## Coding

- ERNIE 5.1: 44.0 (#76)
- Grok-2 (Dec 2024): 33.3 (#258)

| Benchmark | ERNIE 5.1 | Grok-2 (Dec 2024) |
|---|---|---|
| LMArena Coding | 1488 | 1287 |
| WeirdML | — | 22.2% |
| LiveBench Coding | — | 46.4% |

## Agentic & Tool Use

- ERNIE 5.1: —
- Grok-2 (Dec 2024): —

| Benchmark | ERNIE 5.1 | Grok-2 (Dec 2024) |
|---|---|---|
| LMArena Search | 1227 | — |

## Reasoning

- ERNIE 5.1: 21.9 (#211)
- Grok-2 (Dec 2024): 16.9 (#299)

| Benchmark | ERNIE 5.1 | Grok-2 (Dec 2024) |
|---|---|---|
| LMArena Hard Prompts | 1481 | 1272 |
| SimpleBench | — | 22.7% |
| NYT Connections (extended) | 23.4% | — |
| LiveBench Reasoning | — | 54.8% |
| DTBench | — | 65.2% |
| LiveBench Data Analysis | — | 54.5% |
| Epoch Capabilities Index | — | 130.48 |
| LiveBench | — | 54.3% |

## Math

- ERNIE 5.1: 40.3 (#92)
- Grok-2 (Dec 2024): 20.8 (#284)

| Benchmark | ERNIE 5.1 | Grok-2 (Dec 2024) |
|---|---|---|
| LMArena Math | 1481 | 1283 |
| OTIS Mock AIME 2024-2025 | — | 11.5% |
| LiveBench Math | — | 54.9% |
| MATH Level 5 | — | 63.5% |
| FrontierMath (Feb 2025 set) | — | 0.7% |

## Knowledge

- ERNIE 5.1: 41.9 (#102)
- Grok-2 (Dec 2024): 29.8 (#233)

| Benchmark | ERNIE 5.1 | Grok-2 (Dec 2024) |
|---|---|---|
| LMArena Expert | 1492 | 1254 |
| GPQA Diamond | — | 53.8% |
| Confabulations | — | 20.1% |

## Multilingual

- ERNIE 5.1: 55.5 (#29)
- Grok-2 (Dec 2024): 43.1 (#188)

| Benchmark | ERNIE 5.1 | Grok-2 (Dec 2024) |
|---|---|---|
| LMArena Non-English | 1454 | 1282 |
| LMArena Chinese | 1508 | 1289 |
| LMArena French | 1488 | 1318 |
| LMArena German | 1470 | 1287 |
| LMArena Japanese | 1422 | 1244 |
| LMArena Korean | 1427 | 1237 |
| LMArena Russian | 1459 | 1286 |
| LMArena Spanish | 1473 | 1281 |

## Instruction Following

- ERNIE 5.1: 76.7 (#37)
- Grok-2 (Dec 2024): 66.9 (#202)

| Benchmark | ERNIE 5.1 | Grok-2 (Dec 2024) |
|---|---|---|
| LMArena Instruction Following | 1460 | 1270 |
| LiveBench Instruction Following | — | 69.6% |

## Long Context

- ERNIE 5.1: 44.7 (#59)
- Grok-2 (Dec 2024): 38.8 (#190)

| Benchmark | ERNIE 5.1 | Grok-2 (Dec 2024) |
|---|---|---|
| LMArena Longer Query | 1462 | 1276 |

## Writing & Preference

- ERNIE 5.1: 65.1 (#52)
- Grok-2 (Dec 2024): 48.6 (#198)

| Benchmark | ERNIE 5.1 | Grok-2 (Dec 2024) |
|---|---|---|
| LMArena Text | 1468 | 1305 |
| LMArena Creative Writing | 1441 | 1284 |
| LMArena Multi-Turn | 1471 | 1290 |
| Short-Story Creative Writing | — | 63.6% |
| LiveBench Language | — | 45.6% |

## FAQ

### Is ERNIE 5.1 better than Grok-2 (Dec 2024)?

ERNIE 5.1 is the stronger model overall, scoring 43.8 to 33.7 on the Noometry Index.

### Is ERNIE 5.1 or Grok-2 (Dec 2024) better for coding?

ERNIE 5.1 scores higher on coding benchmarks: 44.0 versus 33.3 in the Noometry coding category.

### How many benchmarks do ERNIE 5.1 and Grok-2 (Dec 2024) share?

17 benchmarks have published results for both models. ERNIE 5.1 has 19 scored results on Noometry and Grok-2 (Dec 2024) has 34.