# GPT-5.3 Chat vs Grok 4.7

> Grok 4.7 is the stronger model overall, scoring 46.6 to 42.1 on the Noometry Index.

- Canonical page: https://noometry.com/compare/gpt-5-3-chat-vs-grok-4-7
- Last updated: 2026-10-10
- Shared benchmarks: 13

## Summary

- They share 13 benchmarks with published results for both. GPT-5.3 Chat scores higher in 0 categories and Grok 4.7 in 8 categories; 5 gaps are clear of the uncertainty.
- The widest gap is in coding, where Grok 4.7 leads 55.0 to 40.8.
- Grok 4.7 is cheaper at $2 / $6 per million input/output tokens, against $1.75 / $14 for GPT-5.3 Chat.
- Grok 4.7 accepts more context: 500K tokens versus 128K.

## Snapshot

| | GPT-5.3 Chat | Grok 4.7 |
|---|---|---|
| Provider | OpenAI | xAI |
| Noometry Index | 42.1 | 46.6 |
| Rank | 109 | 56 |
| Context | 128K | 500K |
| Input $/M | $1.75 | $2 |
| Output $/M | $14 | $6 |
| Weights | Proprietary | Proprietary |

## Coding

- GPT-5.3 Chat: 40.8 (#124)
- Grok 4.7: 55.0 (#23)

| Benchmark | GPT-5.3 Chat | Grok 4.7 |
|---|---|---|
| LMArena Coding | 1408 | 1423 |
| CursorBench | — | 46.3% |
| LMArena WebDev | — | 1636 |
| FrontierSWE | — | 29.5% |
| SciCode | — | 57.4% |

## Reasoning

- GPT-5.3 Chat: 27.3 (#105)
- Grok 4.7: 40.1 (#49)

| Benchmark | GPT-5.3 Chat | Grok 4.7 |
|---|---|---|
| LMArena Hard Prompts | 1399 | 1409 |
| NYT Connections (extended) | — | 76.8% |
| CritPt | — | 17.7% |

## Math

- GPT-5.3 Chat: 35.4 (#146)
- Grok 4.7: 41.1 (#73)

| Benchmark | GPT-5.3 Chat | Grok 4.7 |
|---|---|---|
| LMArena Math | 1389 | 1393 |
| ProofBench | — | 34% |

## Knowledge

- GPT-5.3 Chat: 38.2 (#137)
- Grok 4.7: 38.7 (#130)

| Benchmark | GPT-5.3 Chat | Grok 4.7 |
|---|---|---|
| LMArena Expert | 1397 | 1413 |

## Multimodal

- GPT-5.3 Chat: —
- Grok 4.7: 28.8 (#107)

| Benchmark | GPT-5.3 Chat | Grok 4.7 |
|---|---|---|
| Furniture Assembly | — | 20.8% |

## Multilingual

- GPT-5.3 Chat: 50.5 (#119)
- Grok 4.7: 51.2 (#108)

| Benchmark | GPT-5.3 Chat | Grok 4.7 |
|---|---|---|
| LMArena Non-English | 1383 | 1392 |
| LMArena Chinese | 1433 | 1476 |
| LMArena Russian | 1400 | 1396 |
| LMArena French | 1398 | — |
| LMArena German | 1384 | — |
| LMArena Japanese | 1351 | — |
| LMArena Korean | 1347 | — |
| LMArena Spanish | 1371 | — |

## Instruction Following

- GPT-5.3 Chat: 73.0 (#124)
- Grok 4.7: 74.3 (#98)

| Benchmark | GPT-5.3 Chat | Grok 4.7 |
|---|---|---|
| LMArena Instruction Following | 1378 | 1406 |

## Long Context

- GPT-5.3 Chat: 42.6 (#115)
- Grok 4.7: 43.2 (#97)

| Benchmark | GPT-5.3 Chat | Grok 4.7 |
|---|---|---|
| LMArena Longer Query | 1396 | 1416 |

## Writing & Preference

- GPT-5.3 Chat: 63.3 (#65)
- Grok 4.7: 70.1 (#23)

| Benchmark | GPT-5.3 Chat | Grok 4.7 |
|---|---|---|
| LMArena Text | 1389 | 1397 |
| LMArena Creative Writing | 1356 | 1391 |
| EQ-Bench Creative Writing | 1690 | 2007 |
| LMArena Multi-Turn | 1413 | 1389 |

## FAQ

### Is GPT-5.3 Chat better than Grok 4.7?

Grok 4.7 is the stronger model overall, scoring 46.6 to 42.1 on the Noometry Index.

### Which is cheaper, GPT-5.3 Chat or Grok 4.7?

Grok 4.7 is cheaper. It lists at $2 per million input tokens and $6 per million output tokens; GPT-5.3 Chat lists at $1.75 and $14.

### Is GPT-5.3 Chat or Grok 4.7 better for coding?

Grok 4.7 scores higher on coding benchmarks: 55.0 versus 40.8 in the Noometry coding category.

### Which has the bigger context window?

Grok 4.7 does, with 500K tokens against 128K.

### How many benchmarks do GPT-5.3 Chat and Grok 4.7 share?

13 benchmarks have published results for both models. GPT-5.3 Chat has 18 scored results on Noometry and Grok 4.7 has 21.