# GPT-5.3 Codex vs Qwen3 Coder Next

> GPT-5.3 Codex is the stronger model overall, scoring 45.5 to 33.8 on the Noometry Index. Qwen3 Coder Next costs 17× less per token, which makes it the better buy when GPT-5.3 Codex's lead doesn't matter for your workload.

- Canonical page: https://noometry.com/compare/gpt-5-3-codex-vs-qwen3-coder-next
- Last updated: 2026-10-10
- Shared benchmarks: 1

## Summary

- They share 1 benchmark with published results for both. GPT-5.3 Codex scores higher in 1 category and Qwen3 Coder Next in 0 categories; one gap is clear of the uncertainty.
- The widest gap is in coding, where GPT-5.3 Codex leads 48.5 to 35.8.
- The biggest single-benchmark swing is WeirdML: 79.3% for GPT-5.3 Codex and 34.4% for Qwen3 Coder Next.
- Qwen3 Coder Next is cheaper at $0.12 / $0.80 per million input/output tokens, against $1.75 / $14 for GPT-5.3 Codex.
- GPT-5.3 Codex accepts more context: 400K tokens versus 262K.
- Qwen3 Coder Next has downloadable open weights; the other is API-only.

## Snapshot

| | GPT-5.3 Codex | Qwen3 Coder Next |
|---|---|---|
| Provider | OpenAI | Alibaba (Qwen) |
| Noometry Index | 45.5 | 33.8 |
| Rank | 61 | 229 |
| Context | 400K | 262K |
| Input $/M | $1.75 | $0.12 |
| Output $/M | $14 | $0.80 |
| Weights | Proprietary | Open |

## Coding

- GPT-5.3 Codex: 48.5 (#51)
- Qwen3 Coder Next: 35.8 (#206)

| Benchmark | GPT-5.3 Codex | Qwen3 Coder Next |
|---|---|---|
| WeirdML | 79.3% | 34.4% |
| SWE-bench Verified | 74.8% | — |
| LMArena WebDev | 1408 | — |
| SciCode | — | 32.3% |
| ALE-Bench | 1,655 | — |

## Agentic & Tool Use

- GPT-5.3 Codex: 47.8 (#9)
- Qwen3 Coder Next: —

| Benchmark | GPT-5.3 Codex | Qwen3 Coder Next |
|---|---|---|
| Terminal-Bench | 78.4% | — |
| METR Time Horizons | 74.5% | — |
| Vending-Bench 2 | 5,940 | — |

## Reasoning

- GPT-5.3 Codex: —
- Qwen3 Coder Next: 21.7 (#191)

| Benchmark | GPT-5.3 Codex | Qwen3 Coder Next |
|---|---|---|
| CritPt | — | 0% |
| Epoch Capabilities Index | 156.84 | — |

## FAQ

### Is GPT-5.3 Codex better than Qwen3 Coder Next?

GPT-5.3 Codex is the stronger model overall, scoring 45.5 to 33.8 on the Noometry Index. Qwen3 Coder Next costs 17× less per token, which makes it the better buy when GPT-5.3 Codex's lead doesn't matter for your workload.

### Which is cheaper, GPT-5.3 Codex or Qwen3 Coder Next?

Qwen3 Coder Next is cheaper. It lists at $0.12 per million input tokens and $0.80 per million output tokens; GPT-5.3 Codex lists at $1.75 and $14.

### Is GPT-5.3 Codex or Qwen3 Coder Next better for coding?

GPT-5.3 Codex scores higher on coding benchmarks: 48.5 versus 35.8 in the Noometry coding category.

### Which has the bigger context window?

GPT-5.3 Codex does, with 400K tokens against 262K.

### How many benchmarks do GPT-5.3 Codex and Qwen3 Coder Next share?

1 benchmark has published results for both models. GPT-5.3 Codex has 8 scored results on Noometry and Qwen3 Coder Next has 3.