Model comparison
GPT-5.3 Codex vs Qwen3 Coder Next
GPT-5.3 Codex is the stronger model overall, scoring 45.8 to 34.3 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.
Last verified . 1 shared benchmarks.
Alibaba (Qwen)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 48.6 to 36.3.
- 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.
Side by side
| GPT-5.3 Codex | Qwen3 Coder Next | |
|---|---|---|
| Provider | OpenAI | Alibaba (Qwen) |
| Noometry Index | 45.8 | 34.3 |
| Released | 2026-02-05 | 2026-02-02 |
| Weights | Proprietary | Open |
| Context window | 400K | 262K |
| Max output | 128K | 66K |
| Input $ / M tokens | $1.75 | $0.12 |
| Output $ / M tokens | $14 | $0.80 |
| Results tracked | 8 | 3 |
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Category by category
Coding GPT-5.3 Codex leads
GPT-5.3 Codex: 48.6 (#56), Qwen3 Coder Next: 36.3 (#210)
| Benchmark | GPT-5.3 Codex | Qwen3 Coder Next |
|---|---|---|
| WeirdML | 79.3% | 34.4% |
| SWE-bench Verified | 74.8% | — |
| LMArena WebDev | 1409 | — |
| SciCode | — | 32.3% |
| ALE-Bench | 1,655 | — |
Agentic & Tool Use Not comparable
GPT-5.3 Codex: 48.0 (#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 Not comparable
GPT-5.3 Codex: —, Qwen3 Coder Next: 22.4 (#196)
| Benchmark | GPT-5.3 Codex | Qwen3 Coder Next |
|---|---|---|
| CritPt | — | 0% |
| Epoch Capabilities Index | 156.77 | — |
Frequently asked questions
Is GPT-5.3 Codex better than Qwen3 Coder Next?
GPT-5.3 Codex is the stronger model overall, scoring 45.8 to 34.3 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: 48.6 versus 36.3 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.