# Grok Build 0.1 vs Mercury 2

> Mercury 2 is the stronger model overall, scoring 38.8 to 35.8 on the Noometry Index.

- Canonical page: https://noometry.com/compare/grok-build-0-1-vs-mercury-2
- Last updated: 2026-10-10
- Shared benchmarks: 2

## Summary

- They share 2 benchmarks with published results for both. Grok Build 0.1 scores higher in 2 categories and Mercury 2 in 0 categories; 2 gaps are clear of the uncertainty.
- The widest gap is in coding, where Grok Build 0.1 leads 42.5 to 33.2.
- The biggest single-benchmark swing is SciCode: 50.2% for Grok Build 0.1 and 38.7% for Mercury 2.
- Mercury 2 is cheaper at $0.25 / $0.75 per million input/output tokens, against $1 / $2 for Grok Build 0.1.
- Grok Build 0.1 accepts more context: 256K tokens versus 128K.

## Snapshot

| | Grok Build 0.1 | Mercury 2 |
|---|---|---|
| Provider | xAI | Inception |
| Noometry Index | 35.8 | 38.8 |
| Rank | 214 | 167 |
| Context | 256K | 128K |
| Input $/M | $1 | $0.25 |
| Output $/M | $2 | $0.75 |
| Weights | Proprietary | Proprietary |

## Coding

- Grok Build 0.1: 42.5 (#90)
- Mercury 2: 33.2 (#250)

| Benchmark | Grok Build 0.1 | Mercury 2 |
|---|---|---|
| SciCode | 50.2% | 38.7% |
| LMArena WebDev | — | 1170 |
| WeirdML | — | 43.2% |
| LMArena Coding | — | 1391 |
| ALE-Bench | — | 785.58 |

## Agentic & Tool Use

- Grok Build 0.1: 22.5 (#122)
- Mercury 2: —

| Benchmark | Grok Build 0.1 | Mercury 2 |
|---|---|---|
| GBAEval | 2.4% | — |

## Reasoning

- Grok Build 0.1: 31.3 (#73)
- Mercury 2: 23.0 (#170)

| Benchmark | Grok Build 0.1 | Mercury 2 |
|---|---|---|
| CritPt | 9.1% | 0.8% |
| LMArena Hard Prompts | — | 1362 |

## Knowledge

- Grok Build 0.1: —
- Mercury 2: 35.6 (#170)

| Benchmark | Grok Build 0.1 | Mercury 2 |
|---|---|---|
| Vectara Hallucination Rate | — | 12.3% |
| LMArena Expert | — | 1358 |

## Multilingual

- Grok Build 0.1: —
- Mercury 2: 46.8 (#153)

| Benchmark | Grok Build 0.1 | Mercury 2 |
|---|---|---|
| LMArena Non-English | — | 1331 |
| LMArena Chinese | — | 1416 |
| LMArena Russian | — | 1303 |

## Instruction Following

- Grok Build 0.1: —
- Mercury 2: 70.4 (#161)

| Benchmark | Grok Build 0.1 | Mercury 2 |
|---|---|---|
| LMArena Instruction Following | — | 1328 |

## Long Context

- Grok Build 0.1: —
- Mercury 2: 40.4 (#149)

| Benchmark | Grok Build 0.1 | Mercury 2 |
|---|---|---|
| LMArena Longer Query | — | 1329 |

## Writing & Preference

- Grok Build 0.1: —
- Mercury 2: 54.0 (#151)

| Benchmark | Grok Build 0.1 | Mercury 2 |
|---|---|---|
| LMArena Text | — | 1355 |
| LMArena Creative Writing | — | 1289 |
| LMArena Multi-Turn | — | 1358 |

## FAQ

### Is Grok Build 0.1 better than Mercury 2?

Mercury 2 is the stronger model overall, scoring 38.8 to 35.8 on the Noometry Index.

### Which is cheaper, Grok Build 0.1 or Mercury 2?

Mercury 2 is cheaper. It lists at $0.25 per million input tokens and $0.75 per million output tokens; Grok Build 0.1 lists at $1 and $2.

### Is Grok Build 0.1 or Mercury 2 better for coding?

Grok Build 0.1 scores higher on coding benchmarks: 42.5 versus 33.2 in the Noometry coding category.

### Which has the bigger context window?

Grok Build 0.1 does, with 256K tokens against 128K.

### How many benchmarks do Grok Build 0.1 and Mercury 2 share?

2 benchmarks have published results for both models. Grok Build 0.1 has 3 scored results on Noometry and Mercury 2 has 17.