# DBRX vs GPT-5.3 Codex

> GPT-5.3 Codex is the stronger model overall, scoring 45.5 to 29.0 on the Noometry Index.

- Canonical page: https://noometry.com/compare/dbrx-vs-gpt-5-3-codex
- Last updated: 2026-10-10
- Shared benchmarks: 0

## Summary

- The widest gap is in coding, where GPT-5.3 Codex leads 48.5 to 32.3.
- DBRX has downloadable open weights; the other is API-only.

## Snapshot

| | DBRX | GPT-5.3 Codex |
|---|---|---|
| Provider | Databricks | OpenAI |
| Noometry Index | 29.0 | 45.5 |
| Rank | 307 | 61 |
| Context | — | 400K |
| Input $/M | — | $1.75 |
| Output $/M | — | $14 |
| Weights | Open | Proprietary |

## Coding

- DBRX: 32.3 (#262)
- GPT-5.3 Codex: 48.5 (#51)

| Benchmark | DBRX | GPT-5.3 Codex |
|---|---|---|
| SWE-bench Verified | — | 74.8% |
| LMArena WebDev | — | 1408 |
| WeirdML | — | 79.3% |
| LMArena Coding | 1132 | — |
| ALE-Bench | — | 1,655 |
| HumanEval+ | 70.1% | — |
| MBPP+ | 55.8% | — |

## Agentic & Tool Use

- DBRX: —
- GPT-5.3 Codex: 47.8 (#9)

| Benchmark | DBRX | GPT-5.3 Codex |
|---|---|---|
| Terminal-Bench | — | 78.4% |
| METR Time Horizons | — | 74.5% |
| Vending-Bench 2 | — | 5,940 |

## Reasoning

- DBRX: 20.5 (#218)
- GPT-5.3 Codex: —

| Benchmark | DBRX | GPT-5.3 Codex |
|---|---|---|
| LMArena Hard Prompts | 1113 | — |
| Epoch Capabilities Index | — | 156.84 |

## Math

- DBRX: 22.3 (#265)
- GPT-5.3 Codex: —

| Benchmark | DBRX | GPT-5.3 Codex |
|---|---|---|
| LMArena Math | 1145 | — |
| MATH Level 5 | 11.7% | — |

## Knowledge

- DBRX: 14.9 (#289)
- GPT-5.3 Codex: —

| Benchmark | DBRX | GPT-5.3 Codex |
|---|---|---|
| GPQA Diamond | 32.9% | — |
| LMArena Expert | 1076 | — |

## Multilingual

- DBRX: 29.4 (#263)
- GPT-5.3 Codex: —

| Benchmark | DBRX | GPT-5.3 Codex |
|---|---|---|
| LMArena Non-English | 1071 | — |
| LMArena Chinese | 1068 | — |
| LMArena French | 1095 | — |
| LMArena German | 1057 | — |
| LMArena Japanese | 990 | — |
| LMArena Korean | 993 | — |
| LMArena Russian | 1078 | — |
| LMArena Spanish | 1064 | — |

## Instruction Following

- DBRX: 57.7 (#265)
- GPT-5.3 Codex: —

| Benchmark | DBRX | GPT-5.3 Codex |
|---|---|---|
| LMArena Instruction Following | 1112 | — |

## Long Context

- DBRX: 33.7 (#253)
- GPT-5.3 Codex: —

| Benchmark | DBRX | GPT-5.3 Codex |
|---|---|---|
| LMArena Longer Query | 1112 | — |

## Writing & Preference

- DBRX: 33.7 (#271)
- GPT-5.3 Codex: —

| Benchmark | DBRX | GPT-5.3 Codex |
|---|---|---|
| LMArena Text | 1119 | — |
| LMArena Creative Writing | 1104 | — |
| LMArena Multi-Turn | 1111 | — |

## FAQ

### Is DBRX better than GPT-5.3 Codex?

GPT-5.3 Codex is the stronger model overall, scoring 45.5 to 29.0 on the Noometry Index.

### Is DBRX or GPT-5.3 Codex better for coding?

GPT-5.3 Codex scores higher on coding benchmarks: 48.5 versus 32.3 in the Noometry coding category.

### How many benchmarks do DBRX and GPT-5.3 Codex share?

0 benchmarks have published results for both models. DBRX has 21 scored results on Noometry and GPT-5.3 Codex has 8.