Model comparison
GPT-5 vs MiMo-V2.6-Pro
GPT-5 and MiMo-V2.6-Pro score almost the same on the Noometry Index (50.9 vs 50.3), so choose on price, context window or the category you care about most.
Last verified . 18 shared benchmarks.
Summary
- They share 18 benchmarks with published results for both. GPT-5 scores higher in 4 categories and MiMo-V2.6-Pro in 6 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in long context, where GPT-5 leads 69.5 to 46.0.
- The biggest single-benchmark swing is ProofBench: 18% for GPT-5 and 70% for MiMo-V2.6-Pro.
- MiMo-V2.6-Pro is cheaper at $0.43 / $0.87 per million input/output tokens, against $1.25 / $10 for GPT-5.
- MiMo-V2.6-Pro accepts more context: 1.05M tokens versus 400K.
- MiMo-V2.6-Pro has downloadable open weights; the other is API-only.
Side by side
| GPT-5 | MiMo-V2.6-Pro | |
|---|---|---|
| Provider | OpenAI | Xiaomi |
| Noometry Index | 50.9 | 50.3 |
| Released | 2025-08-07 | 2026-09-21 |
| Weights | Proprietary | Open |
| Context window | 400K | 1.05M |
| Max output | 128K | 131K |
| Input $ / M tokens | $1.25 | $0.43 |
| Output $ / M tokens | $10 | $0.87 |
| Results tracked | 69 | 19 |
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Category by category
Coding MiMo-V2.6-Pro leads
GPT-5: 50.3 (#47), MiMo-V2.6-Pro: 55.5 (#23)
| Benchmark | GPT-5 | MiMo-V2.6-Pro |
|---|---|---|
| LMArena WebDev | 1418 | 1629 |
| SciCode | 42.9% | 60.9% |
| LMArena Coding | 1436 | 1534 |
| ALE-Bench | 1,162 | 1,158 |
| SWE-bench Verified | 73.6% | — |
| SWE-bench Verified (bash only) | 65% | — |
| Aider Polyglot | 88% | — |
| GSO | 6.9% | — |
| WeirdML | 60.7% | — |
| AlgoTune | 1.67 | — |
Agentic & Tool Use MiMo-V2.6-Pro leads
GPT-5: 33.1 (#56), MiMo-V2.6-Pro: 37.5 (#35)
| Benchmark | GPT-5 | MiMo-V2.6-Pro |
|---|---|---|
| Terminal-Bench | 49.6% | — |
| APEX-Agents | — | 59.5% |
| GDPval | 34.8% | — |
| Remote Labor Index | 1.7% | — |
| DeepResearch Bench | 49.6% | — |
| BALROG | 32.8% | — |
| LMArena Search | 1133 | — |
| METR Time Horizons | 69.6% | — |
Reasoning MiMo-V2.6-Pro leads
GPT-5: 38.3 (#64), MiMo-V2.6-Pro: 43.1 (#50)
| Benchmark | GPT-5 | MiMo-V2.6-Pro |
|---|---|---|
| CritPt | 12.6% | 26.6% |
| LMArena Hard Prompts | 1416 | 1512 |
| ARC-AGI-2 | 9.9% | — |
| SimpleBench | 56.7% | — |
| Kagi LLM Benchmark | 72.7% | — |
| ARC-AGI-1 | 65.7% | — |
| Chess Puzzles | 37% | — |
| EnigmaEval | 10.5% | — |
| EBR-Bench | 12.7% | — |
| Mystery Game Puzzles | 23% | — |
| DTBench | 90.7% | — |
| LMCA | 40% | — |
| Epoch Capabilities Index | 150 | — |
| ForecastBench | 61.4 | — |
Math Too close to call
GPT-5: 55.0 (#44), MiMo-V2.6-Pro: 54.5 (#45)
| Benchmark | GPT-5 | MiMo-V2.6-Pro |
|---|---|---|
| ProofBench | 18% | 70% |
| LMArena Math | 1407 | 1494 |
| FrontierMath (Tiers 1-3) | 55.4% | — |
| FrontierMath Tier 4 | 22% | — |
| OTIS Mock AIME 2024-2025 | 91.4% | — |
| Omni-MATH | 64.7% | — |
| MATH Level 5 | 98.1% | — |
| FrontierMath (Feb 2025 set) | 32.4% | — |
| FrontierMath Tier 4 (v1) | 12.5% | — |
Knowledge GPT-5 leads
GPT-5: 56.6 (#43), MiMo-V2.6-Pro: 43.5 (#92)
| Benchmark | GPT-5 | MiMo-V2.6-Pro |
|---|---|---|
| LMArena Expert | 1419 | 1543 |
| GPQA Diamond | 86.2% | — |
| Humanity's Last Exam | 25.3% | — |
| SimpleQA Verified | 50.1% | — |
| MMLU-Pro | 86.3% | — |
| Confabulations | 10.3% | — |
| Vectara Hallucination Rate | 14.7% | — |
| GPQA (HELM) | 79.2% | — |
Multimodal GPT-5 leads
GPT-5: 46.8 (#13), MiMo-V2.6-Pro: 40.8 (#43)
| Benchmark | GPT-5 | MiMo-V2.6-Pro |
|---|---|---|
| LMArena Vision | 1232 | 1264 |
| GeoBench | 81% | — |
| VPCT | 66% | — |
Multilingual MiMo-V2.6-Pro leads
GPT-5: 51.4 (#110), MiMo-V2.6-Pro: 56.9 (#14)
| Benchmark | GPT-5 | MiMo-V2.6-Pro |
|---|---|---|
| LMArena Non-English | 1397 | 1474 |
| LMArena Chinese | 1422 | 1529 |
| LMArena Russian | 1406 | 1480 |
| LMArena French | 1410 | — |
| LMArena German | 1416 | — |
| LMArena Japanese | 1409 | — |
| LMArena Korean | 1360 | — |
| LMArena Spanish | 1399 | — |
Instruction Following MiMo-V2.6-Pro leads
GPT-5: 73.8 (#113), MiMo-V2.6-Pro: 78.2 (#12)
| Benchmark | GPT-5 | MiMo-V2.6-Pro |
|---|---|---|
| LMArena Instruction Following | 1388 | 1493 |
| IFEval | 87.5% | — |
Long Context GPT-5 leads
GPT-5: 69.5 (#2), MiMo-V2.6-Pro: 46.0 (#27)
| Benchmark | GPT-5 | MiMo-V2.6-Pro |
|---|---|---|
| LMArena Longer Query | 1399 | 1501 |
| Fiction.LiveBench | 97.2% | — |
Writing & Preference MiMo-V2.6-Pro leads
GPT-5: 63.4 (#65), MiMo-V2.6-Pro: 66.8 (#33)
| Benchmark | GPT-5 | MiMo-V2.6-Pro |
|---|---|---|
| LMArena Text | 1406 | 1492 |
| LMArena Creative Writing | 1365 | 1468 |
| LMArena Multi-Turn | 1426 | 1464 |
| Short-Story Creative Writing | 86% | — |
| EQ-Bench Creative Writing | 1627 | — |
| WildBench | 85.7% | — |
Frequently asked questions
Is GPT-5 better than MiMo-V2.6-Pro?
GPT-5 and MiMo-V2.6-Pro score almost the same on the Noometry Index (50.9 vs 50.3), so choose on price, context window or the category you care about most.
Which is cheaper, GPT-5 or MiMo-V2.6-Pro?
MiMo-V2.6-Pro is cheaper. It lists at $0.43 per million input tokens and $0.87 per million output tokens; GPT-5 lists at $1.25 and $10.
Is GPT-5 or MiMo-V2.6-Pro better for coding?
MiMo-V2.6-Pro scores higher on coding benchmarks: 55.5 versus 50.3 in the Noometry coding category.
Which has the bigger context window?
MiMo-V2.6-Pro does, with 1.05M tokens against 400K.
How many benchmarks do GPT-5 and MiMo-V2.6-Pro share?
18 benchmarks have published results for both models. GPT-5 has 69 scored results on Noometry and MiMo-V2.6-Pro has 19.