Model comparison
DeepSeek-V3.2-Speciale vs GPT-5.1-Codex
DeepSeek-V3.2-Speciale and GPT-5.1-Codex score almost the same on the Noometry Index (39.1 vs 38.2), so choose on price, context window or the category you care about most.
Last verified . 0 shared benchmarks.
DeepSeekSummary
- DeepSeek-V3.2-Speciale is cheaper at $0.58 / $1.68 per million input/output tokens, against $1.25 / $10 for GPT-5.1-Codex.
- GPT-5.1-Codex accepts more context: 400K tokens versus 128K.
- DeepSeek-V3.2-Speciale has downloadable open weights; the other is API-only.
Side by side
| DeepSeek-V3.2-Speciale | GPT-5.1-Codex | |
|---|---|---|
| Provider | DeepSeek | OpenAI |
| Noometry Index | 39.1 | 38.2 |
| Released | 2025-12-01 | 2025-11-12 |
| Weights | Open | Proprietary |
| Context window | 128K | 400K |
| Max output | 128K | 128K |
| Input $ / M tokens | $0.58 | $1.25 |
| Output $ / M tokens | $1.68 | $10 |
| Results tracked | 3 | 6 |
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Category by category
Coding GPT-5.1-Codex leads
DeepSeek-V3.2-Speciale: 39.9 (#136), GPT-5.1-Codex: 41.7 (#107)
| Benchmark | DeepSeek-V3.2-Speciale | GPT-5.1-Codex |
|---|---|---|
| SWE-bench Verified (bash only) | — | 66% |
| LMArena WebDev | — | 1337 |
| WeirdML | 46.7% | — |
| ALE-Bench | — | 1,245 |
Agentic & Tool Use Not comparable
DeepSeek-V3.2-Speciale: —, GPT-5.1-Codex: 37.8 (#32)
| Benchmark | DeepSeek-V3.2-Speciale | GPT-5.1-Codex |
|---|---|---|
| Terminal-Bench | — | 60.4% |
| METR Time Horizons | — | 70.8% |
Reasoning Not comparable
DeepSeek-V3.2-Speciale: 32.1 (#65), GPT-5.1-Codex: —
| Benchmark | DeepSeek-V3.2-Speciale | GPT-5.1-Codex |
|---|---|---|
| SimpleBench | 52.6% | — |
Math Not comparable
DeepSeek-V3.2-Speciale: —, GPT-5.1-Codex: 29.3 (#218)
| Benchmark | DeepSeek-V3.2-Speciale | GPT-5.1-Codex |
|---|---|---|
| ProofBench | — | 9% |
Writing & Preference Not comparable
DeepSeek-V3.2-Speciale: 46.1 (#217), GPT-5.1-Codex: —
| Benchmark | DeepSeek-V3.2-Speciale | GPT-5.1-Codex |
|---|---|---|
| EQ-Bench Creative Writing | 1276 | — |
Frequently asked questions
Is DeepSeek-V3.2-Speciale better than GPT-5.1-Codex?
DeepSeek-V3.2-Speciale and GPT-5.1-Codex score almost the same on the Noometry Index (39.1 vs 38.2), so choose on price, context window or the category you care about most.
Which is cheaper, DeepSeek-V3.2-Speciale or GPT-5.1-Codex?
DeepSeek-V3.2-Speciale is cheaper. It lists at $0.58 per million input tokens and $1.68 per million output tokens; GPT-5.1-Codex lists at $1.25 and $10.
Is DeepSeek-V3.2-Speciale or GPT-5.1-Codex better for coding?
GPT-5.1-Codex scores higher on coding benchmarks: 41.7 versus 39.9 in the Noometry coding category.
Which has the bigger context window?
GPT-5.1-Codex does, with 400K tokens against 128K.
How many benchmarks do DeepSeek-V3.2-Speciale and GPT-5.1-Codex share?
0 benchmarks have published results for both models. DeepSeek-V3.2-Speciale has 3 scored results on Noometry and GPT-5.1-Codex has 6.