Model comparison
GPT-5.5 Instant vs MiMo-V2-Pro
GPT-5.5 Instant and MiMo-V2-Pro score almost the same on the Noometry Index (42.5 vs 42.4), so choose on price, context window or the category you care about most.
Last verified . 17 shared benchmarks.
Summary
- They share 17 benchmarks with published results for both. GPT-5.5 Instant scores higher in 5 categories and MiMo-V2-Pro in 3 categories; 5 gaps are clear of the uncertainty.
- The widest gap is in math, where MiMo-V2-Pro leads 36.7 to 26.1.
Side by side
| GPT-5.5 Instant | MiMo-V2-Pro | |
|---|---|---|
| Provider | OpenAI | Xiaomi |
| Noometry Index | 42.5 | 42.4 |
| Released | 2026-05-05 | 2026-03-18 |
| Weights | Proprietary | Proprietary |
| Context window | — | 1.05M |
| Max output | — | 131K |
| Input $ / M tokens | — | $0.43 |
| Output $ / M tokens | — | $0.87 |
| Results tracked | 27 | 23 |
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Category by category
Coding Too close to call
GPT-5.5 Instant: 43.7 (#73), MiMo-V2-Pro: 43.4 (#76)
| Benchmark | GPT-5.5 Instant | MiMo-V2-Pro |
|---|---|---|
| LMArena Coding | 1433 | 1476 |
| LMArena WebDev | — | 1433 |
| SciCode | 48.6% | — |
| ALE-Bench | — | 785.17 |
Reasoning GPT-5.5 Instant leads
GPT-5.5 Instant: 24.2 (#149), MiMo-V2-Pro: 21.3 (#200)
| Benchmark | GPT-5.5 Instant | MiMo-V2-Pro |
|---|---|---|
| LMArena Hard Prompts | 1426 | 1457 |
| NYT Connections (extended) | — | 25.8% |
| CritPt | 0% | — |
| Chess Puzzles | 12% | — |
| Thematic Generalization | — | 45.9% |
| Epoch Capabilities Index | 142.48 | — |
Math MiMo-V2-Pro leads
GPT-5.5 Instant: 26.1 (#241), MiMo-V2-Pro: 36.7 (#104)
| Benchmark | GPT-5.5 Instant | MiMo-V2-Pro |
|---|---|---|
| LMArena Math | 1420 | 1447 |
| 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), MiMo-V2-Pro: 40.8 (#106)
| Benchmark | GPT-5.5 Instant | MiMo-V2-Pro |
|---|---|---|
| LMArena Expert | 1409 | 1479 |
| GPQA Diamond | 82.5% | — |
Multimodal Not comparable
GPT-5.5 Instant: 39.3 (#48), MiMo-V2-Pro: —
| Benchmark | GPT-5.5 Instant | MiMo-V2-Pro |
|---|---|---|
| LMArena Vision | 1250 | — |
| LMArena Document | 1403 | — |
Multilingual Too close to call
GPT-5.5 Instant: 53.0 (#76), MiMo-V2-Pro: 52.9 (#77)
| Benchmark | GPT-5.5 Instant | MiMo-V2-Pro |
|---|---|---|
| LMArena Non-English | 1417 | 1416 |
| LMArena Chinese | 1457 | 1455 |
| LMArena French | 1428 | 1470 |
| LMArena German | 1410 | 1417 |
| LMArena Japanese | 1408 | 1366 |
| LMArena Korean | 1393 | 1401 |
| LMArena Russian | 1430 | 1427 |
| LMArena Spanish | 1430 | 1458 |
Instruction Following MiMo-V2-Pro leads
GPT-5.5 Instant: 74.4 (#94), MiMo-V2-Pro: 76.2 (#46)
| Benchmark | GPT-5.5 Instant | MiMo-V2-Pro |
|---|---|---|
| LMArena Instruction Following | 1407 | 1444 |
Long Context GPT-5.5 Instant leads
GPT-5.5 Instant: 43.4 (#92), MiMo-V2-Pro: 41.5 (#133)
| Benchmark | GPT-5.5 Instant | MiMo-V2-Pro |
|---|---|---|
| LMArena Longer Query | 1422 | 1455 |
| CL-bench | — | 15.7% |
| CL-bench Life | — | 6.9% |
Writing & Preference Too close to call
GPT-5.5 Instant: 62.0 (#81), MiMo-V2-Pro: 62.9 (#67)
| Benchmark | GPT-5.5 Instant | MiMo-V2-Pro |
|---|---|---|
| LMArena Text | 1419 | 1436 |
| LMArena Creative Writing | 1420 | 1415 |
| LMArena Multi-Turn | 1434 | 1456 |
Frequently asked questions
Is GPT-5.5 Instant better than MiMo-V2-Pro?
GPT-5.5 Instant and MiMo-V2-Pro score almost the same on the Noometry Index (42.5 vs 42.4), so choose on price, context window or the category you care about most.
Is GPT-5.5 Instant or MiMo-V2-Pro better for coding?
They score almost the same on coding (43.7 vs 43.4); test both on your own repository before choosing.
How many benchmarks do GPT-5.5 Instant and MiMo-V2-Pro share?
17 benchmarks have published results for both models. GPT-5.5 Instant has 27 scored results on Noometry and MiMo-V2-Pro has 23.