# Grok Build 0.1 vs Phi-4

> Grok Build 0.1 is the stronger model overall, scoring 36.4 to 31.2 on the Noometry Index. Phi-4 costs 14× less per token, which makes it the better buy when Grok Build 0.1's lead doesn't matter for your workload.

- Canonical page: https://noometry.com/compare/grok-build-0-1-vs-phi-4
- Last updated: 2026-10-11
- Shared benchmarks: 0

## Summary

- The widest gap is in reasoning, where Grok Build 0.1 leads 32.2 to 17.7.
- Phi-4 is cheaper at $0.07 / $0.14 per million input/output tokens, against $1 / $2 for Grok Build 0.1.
- Grok Build 0.1 accepts more context: 256K tokens versus 128K.
- Phi-4 has downloadable open weights; the other is API-only.

## Snapshot

| | Grok Build 0.1 | Phi-4 |
|---|---|---|
| Provider | xAI | Microsoft |
| Noometry Index | 36.4 | 31.2 |
| Rank | 216 | 279 |
| Context | 256K | 128K |
| Input $/M | $1 | $0.07 |
| Output $/M | $2 | $0.14 |
| Weights | Proprietary | Open |

## Coding

- Grok Build 0.1: 43.1 (#91)
- Phi-4: 34.4 (#239)

| Benchmark | Grok Build 0.1 | Phi-4 |
|---|---|---|
| SciCode | 50.2% | — |
| BigCodeBench Instruct | — | 45.5% |
| LiveBench Coding | — | 30.7% |
| LMArena Coding | — | 1231 |
| BigCodeBench Complete | — | 55.4% |

## Agentic & Tool Use

- Grok Build 0.1: 22.7 (#129)
- Phi-4: 22.8 (#128)

| Benchmark | Grok Build 0.1 | Phi-4 |
|---|---|---|
| Berkeley Function Calling Leaderboard | — | 28.8% |
| BALROG | — | 11.6% |
| GBAEval | 2.4% | — |

## Reasoning

- Grok Build 0.1: 32.2 (#77)
- Phi-4: 17.7 (#291)

| Benchmark | Grok Build 0.1 | Phi-4 |
|---|---|---|
| CritPt | 9.1% | — |
| Chess Puzzles | — | 1% |
| LiveBench Reasoning | — | 47.8% |
| LMArena Hard Prompts | — | 1220 |
| LiveBench Data Analysis | — | 45.2% |
| Epoch Capabilities Index | — | 130.42 |
| LiveBench | — | 41.6% |

## Math

- Grok Build 0.1: —
- Phi-4: 20.8 (#285)

| Benchmark | Grok Build 0.1 | Phi-4 |
|---|---|---|
| OTIS Mock AIME 2024-2025 | — | 13.8% |
| LiveBench Math | — | 42% |
| LMArena Math | — | 1246 |
| MATH Level 5 | — | 64.9% |

## Knowledge

- Grok Build 0.1: —
- Phi-4: 32.6 (#209)

| Benchmark | Grok Build 0.1 | Phi-4 |
|---|---|---|
| GPQA Diamond | — | 56.1% |
| Confabulations | — | 29.4% |
| Vectara Hallucination Rate | — | 3.7% |
| LMArena Expert | — | 1203 |
| MMLU | — | 84.8% |

## Multilingual

- Grok Build 0.1: —
- Phi-4: 37.2 (#237)

| Benchmark | Grok Build 0.1 | Phi-4 |
|---|---|---|
| LMArena Non-English | — | 1197 |
| LMArena Chinese | — | 1212 |
| LMArena French | — | 1224 |
| LMArena German | — | 1222 |
| LMArena Japanese | — | 1158 |
| LMArena Korean | — | 1151 |
| LMArena Russian | — | 1209 |
| LMArena Spanish | — | 1234 |

## Instruction Following

- Grok Build 0.1: —
- Phi-4: 60.4 (#251)

| Benchmark | Grok Build 0.1 | Phi-4 |
|---|---|---|
| LiveBench Instruction Following | — | 58.4% |
| LMArena Instruction Following | — | 1201 |

## Long Context

- Grok Build 0.1: —
- Phi-4: 36.9 (#226)

| Benchmark | Grok Build 0.1 | Phi-4 |
|---|---|---|
| LMArena Longer Query | — | 1217 |

## Writing & Preference

- Grok Build 0.1: —
- Phi-4: 40.5 (#244)

| Benchmark | Grok Build 0.1 | Phi-4 |
|---|---|---|
| LMArena Text | — | 1217 |
| LMArena Creative Writing | — | 1182 |
| Short-Story Creative Writing | — | 62.6% |
| LMArena Multi-Turn | — | 1206 |
| LiveBench Language | — | 25.6% |

## FAQ

### Is Grok Build 0.1 better than Phi-4?

Grok Build 0.1 is the stronger model overall, scoring 36.4 to 31.2 on the Noometry Index. Phi-4 costs 14× less per token, which makes it the better buy when Grok Build 0.1's lead doesn't matter for your workload.

### Which is cheaper, Grok Build 0.1 or Phi-4?

Phi-4 is cheaper. It lists at $0.07 per million input tokens and $0.14 per million output tokens; Grok Build 0.1 lists at $1 and $2.

### Is Grok Build 0.1 or Phi-4 better for coding?

Grok Build 0.1 scores higher on coding benchmarks: 43.1 versus 34.4 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 Phi-4 share?

0 benchmarks have published results for both models. Grok Build 0.1 has 3 scored results on Noometry and Phi-4 has 37.