Model comparison
Deepseek Coder v2 vs GPT-5.5 Instant
GPT-5.5 Instant is the stronger model overall, scoring 42.7 to 35.9 on the Noometry Index.
Last verified . 17 shared benchmarks.
DeepSeekSummary
- They share 17 benchmarks with published results for both. Deepseek Coder v2 scores higher in 1 category and GPT-5.5 Instant in 7 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where GPT-5.5 Instant leads 61.8 to 38.2.
- Deepseek Coder v2 has downloadable open weights; the other is API-only.
Side by side
| Deepseek Coder v2 | GPT-5.5 Instant | |
|---|---|---|
| Provider | DeepSeek | OpenAI |
| Noometry Index | 35.9 | 42.7 |
| Released | 2024-06-17 | 2026-05-05 |
| Weights | Open | Proprietary |
| Context window | — | — |
| Max output | — | — |
| Input $ / M tokens | — | — |
| Output $ / M tokens | — | — |
| Results tracked | 24 | 27 |
Sponsored placements are available on pages like this one. Advertise on Noometry
Category by category
Coding GPT-5.5 Instant leads
Deepseek Coder v2: 38.1 (#183), GPT-5.5 Instant: 44.3 (#74)
| Benchmark | Deepseek Coder v2 | GPT-5.5 Instant |
|---|---|---|
| LMArena Coding | 1251 | 1433 |
| SciCode | — | 48.6% |
| BigCodeBench Instruct | 48.2% | — |
| BigCodeBench Complete | 59.7% | — |
| HumanEval+ | 82.3% | — |
| MBPP+ | 75.1% | — |
Reasoning GPT-5.5 Instant leads
Deepseek Coder v2: 23.6 (#176), GPT-5.5 Instant: 24.9 (#155)
| Benchmark | Deepseek Coder v2 | GPT-5.5 Instant |
|---|---|---|
| LMArena Hard Prompts | 1207 | 1426 |
| CritPt | — | 0% |
| Chess Puzzles | — | 12% |
| Epoch Capabilities Index | — | 142.52 |
| WinoGrande | 83.7% | — |
Math Deepseek Coder v2 leads
Deepseek Coder v2: 34.9 (#190), GPT-5.5 Instant: 26.5 (#259)
| Benchmark | Deepseek Coder v2 | GPT-5.5 Instant |
|---|---|---|
| LMArena Math | 1241 | 1420 |
| FrontierMath (Tiers 1-3) | — | 26.3% |
| FrontierMath Tier 4 | — | 2.4% |
| OTIS Mock AIME 2024-2025 | — | 68.1% |
| GSM8K | 94.5% | — |
Knowledge GPT-5.5 Instant leads
Deepseek Coder v2: 32.3 (#212), GPT-5.5 Instant: 48.9 (#74)
| Benchmark | Deepseek Coder v2 | GPT-5.5 Instant |
|---|---|---|
| LMArena Expert | 1181 | 1409 |
| GPQA Diamond | — | 82.5% |
| ARC (AI2) Challenge | 64.3% | — |
Multimodal Not comparable
Deepseek Coder v2: —, GPT-5.5 Instant: 40.0 (#52)
| Benchmark | Deepseek Coder v2 | GPT-5.5 Instant |
|---|---|---|
| LMArena Vision | — | 1250 |
| LMArena Document | — | 1403 |
Multilingual GPT-5.5 Instant leads
Deepseek Coder v2: 36.3 (#240), GPT-5.5 Instant: 52.8 (#80)
| Benchmark | Deepseek Coder v2 | GPT-5.5 Instant |
|---|---|---|
| LMArena Non-English | 1182 | 1417 |
| LMArena Chinese | 1201 | 1456 |
| LMArena French | 1185 | 1428 |
| LMArena German | 1164 | 1411 |
| LMArena Japanese | 1126 | 1408 |
| LMArena Korean | 1104 | 1392 |
| LMArena Russian | 1188 | 1431 |
| LMArena Spanish | 1153 | 1429 |
Instruction Following GPT-5.5 Instant leads
Deepseek Coder v2: 61.7 (#242), GPT-5.5 Instant: 74.2 (#100)
| Benchmark | Deepseek Coder v2 | GPT-5.5 Instant |
|---|---|---|
| LMArena Instruction Following | 1180 | 1406 |
Long Context GPT-5.5 Instant leads
Deepseek Coder v2: 37.0 (#224), GPT-5.5 Instant: 43.4 (#96)
| Benchmark | Deepseek Coder v2 | GPT-5.5 Instant |
|---|---|---|
| LMArena Longer Query | 1219 | 1422 |
Writing & Preference GPT-5.5 Instant leads
Deepseek Coder v2: 38.2 (#253), GPT-5.5 Instant: 61.8 (#85)
| Benchmark | Deepseek Coder v2 | GPT-5.5 Instant |
|---|---|---|
| LMArena Text | 1191 | 1419 |
| LMArena Creative Writing | 1120 | 1419 |
| LMArena Multi-Turn | 1177 | 1433 |
Frequently asked questions
Is Deepseek Coder v2 better than GPT-5.5 Instant?
GPT-5.5 Instant is the stronger model overall, scoring 42.7 to 35.9 on the Noometry Index.
Is Deepseek Coder v2 or GPT-5.5 Instant better for coding?
GPT-5.5 Instant scores higher on coding benchmarks: 44.3 versus 38.1 in the Noometry coding category.
How many benchmarks do Deepseek Coder v2 and GPT-5.5 Instant share?
17 benchmarks have published results for both models. Deepseek Coder v2 has 24 scored results on Noometry and GPT-5.5 Instant has 27.