Model comparison
GPT-5.5 Instant vs Qwen2.5 Plus 1127
GPT-5.5 Instant is the stronger model overall, scoring 42.5 to 38.1 on the Noometry Index.
Last verified . 14 shared benchmarks.
Alibaba (Qwen)Summary
- They share 14 benchmarks with published results for both. GPT-5.5 Instant scores higher in 6 categories and Qwen2.5 Plus 1127 in 2 categories; 7 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where GPT-5.5 Instant leads 48.9 to 34.9.
Side by side
| GPT-5.5 Instant | Qwen2.5 Plus 1127 | |
|---|---|---|
| Provider | OpenAI | Alibaba (Qwen) |
| Noometry Index | 42.5 | 38.1 |
| Released | 2026-05-05 | — |
| Weights | Proprietary | Proprietary |
| Context window | — | — |
| Max output | — | — |
| Input $ / M tokens | — | — |
| Output $ / M tokens | — | — |
| Results tracked | 27 | 14 |
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Category by category
Coding GPT-5.5 Instant leads
GPT-5.5 Instant: 43.7 (#73), Qwen2.5 Plus 1127: 37.9 (#171)
| Benchmark | GPT-5.5 Instant | Qwen2.5 Plus 1127 |
|---|---|---|
| LMArena Coding | 1433 | 1314 |
| SciCode | 48.6% | — |
Reasoning Too close to call
GPT-5.5 Instant: 24.2 (#149), Qwen2.5 Plus 1127: 24.8 (#139)
| Benchmark | GPT-5.5 Instant | Qwen2.5 Plus 1127 |
|---|---|---|
| LMArena Hard Prompts | 1426 | 1299 |
| CritPt | 0% | — |
| Chess Puzzles | 12% | — |
| Epoch Capabilities Index | 142.48 | — |
Math Qwen2.5 Plus 1127 leads
GPT-5.5 Instant: 26.1 (#241), Qwen2.5 Plus 1127: 33.5 (#175)
| Benchmark | GPT-5.5 Instant | Qwen2.5 Plus 1127 |
|---|---|---|
| LMArena Math | 1420 | 1298 |
| FrontierMath (Tiers 1-3) | 26.3% | — |
| FrontierMath Tier 4 | 2.4% | — |
| OTIS Mock AIME 2024-2025 | 68.1% | — |
Knowledge GPT-5.5 Instant leads
GPT-5.5 Instant: 48.9 (#68), Qwen2.5 Plus 1127: 34.9 (#179)
| Benchmark | GPT-5.5 Instant | Qwen2.5 Plus 1127 |
|---|---|---|
| LMArena Expert | 1409 | 1289 |
| GPQA Diamond | 82.5% | — |
Multimodal Not comparable
GPT-5.5 Instant: 39.3 (#48), Qwen2.5 Plus 1127: —
| Benchmark | GPT-5.5 Instant | Qwen2.5 Plus 1127 |
|---|---|---|
| LMArena Vision | 1250 | — |
| LMArena Document | 1403 | — |
Multilingual GPT-5.5 Instant leads
GPT-5.5 Instant: 53.0 (#76), Qwen2.5 Plus 1127: 42.1 (#196)
| Benchmark | GPT-5.5 Instant | Qwen2.5 Plus 1127 |
|---|---|---|
| LMArena Non-English | 1417 | 1265 |
| LMArena Chinese | 1457 | 1314 |
| LMArena German | 1410 | 1231 |
| LMArena Japanese | 1408 | 1207 |
| LMArena Russian | 1430 | 1271 |
| LMArena French | 1428 | — |
| LMArena Korean | 1393 | — |
| LMArena Spanish | 1430 | — |
Instruction Following GPT-5.5 Instant leads
GPT-5.5 Instant: 74.4 (#94), Qwen2.5 Plus 1127: 67.4 (#194)
| Benchmark | GPT-5.5 Instant | Qwen2.5 Plus 1127 |
|---|---|---|
| LMArena Instruction Following | 1407 | 1275 |
Long Context GPT-5.5 Instant leads
GPT-5.5 Instant: 43.4 (#92), Qwen2.5 Plus 1127: 39.2 (#180)
| Benchmark | GPT-5.5 Instant | Qwen2.5 Plus 1127 |
|---|---|---|
| LMArena Longer Query | 1422 | 1292 |
Writing & Preference GPT-5.5 Instant leads
GPT-5.5 Instant: 62.0 (#81), Qwen2.5 Plus 1127: 49.5 (#186)
| Benchmark | GPT-5.5 Instant | Qwen2.5 Plus 1127 |
|---|---|---|
| LMArena Text | 1419 | 1299 |
| LMArena Creative Writing | 1420 | 1262 |
| LMArena Multi-Turn | 1434 | 1299 |
Frequently asked questions
Is GPT-5.5 Instant better than Qwen2.5 Plus 1127?
GPT-5.5 Instant is the stronger model overall, scoring 42.5 to 38.1 on the Noometry Index.
Is GPT-5.5 Instant or Qwen2.5 Plus 1127 better for coding?
GPT-5.5 Instant scores higher on coding benchmarks: 43.7 versus 37.9 in the Noometry coding category.
How many benchmarks do GPT-5.5 Instant and Qwen2.5 Plus 1127 share?
14 benchmarks have published results for both models. GPT-5.5 Instant has 27 scored results on Noometry and Qwen2.5 Plus 1127 has 14.