Model comparison
GPT-4o mini vs MiMo-V2-Flash
MiMo-V2-Flash is the stronger model overall, scoring 40.8 to 25.4 on the Noometry Index.
Last verified . 17 shared benchmarks.
Summary
- They share 17 benchmarks with published results for both. GPT-4o mini scores higher in 0 categories and MiMo-V2-Flash in 8 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in math, where MiMo-V2-Flash leads 35.6 to 9.9.
- MiMo-V2-Flash is cheaper at $0.14 / $0.28 per million input/output tokens, against $0.15 / $0.60 for GPT-4o mini.
- MiMo-V2-Flash accepts more context: 262K tokens versus 128K.
- MiMo-V2-Flash has downloadable open weights; the other is API-only.
Side by side
| GPT-4o mini | MiMo-V2-Flash | |
|---|---|---|
| Provider | OpenAI | Xiaomi |
| Noometry Index | 25.4 | 40.8 |
| Released | 2024-07-18 | 2025-12-16 |
| Weights | Proprietary | Open |
| Context window | 128K | 262K |
| Max output | 16K | 66K |
| Input $ / M tokens | $0.15 | $0.14 |
| Output $ / M tokens | $0.60 | $0.28 |
| Results tracked | 60 | 21 |
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Category by category
Coding MiMo-V2-Flash leads
GPT-4o mini: 21.6 (#330), MiMo-V2-Flash: 35.8 (#205)
| Benchmark | GPT-4o mini | MiMo-V2-Flash |
|---|---|---|
| LMArena Coding | 1290 | 1443 |
| Aider Polyglot | 3.6% | — |
| LMArena WebDev | — | 1330 |
| SciCode | — | 25.9% |
| WeirdML | 11.8% | — |
| BigCodeBench Instruct | 46.1% | — |
| LiveBench Coding | 43.1% | — |
| BigCodeBench Complete | 57.4% | — |
| ALE-Bench | — | 737.95 |
| HumanEval+ | 83.5% | — |
| MBPP+ | 72.2% | — |
Agentic & Tool Use Not comparable
GPT-4o mini: 27.2 (#95), MiMo-V2-Flash: —
| Benchmark | GPT-4o mini | MiMo-V2-Flash |
|---|---|---|
| BALROG | 17.4% | — |
Reasoning MiMo-V2-Flash leads
GPT-4o mini: 8.7 (#343), MiMo-V2-Flash: 24.1 (#155)
| Benchmark | GPT-4o mini | MiMo-V2-Flash |
|---|---|---|
| LMArena Hard Prompts | 1267 | 1420 |
| ARC-AGI-2 | 0% | — |
| SimpleBench | 10.7% | — |
| Kagi LLM Benchmark | 28.8% | — |
| CritPt | — | 0% |
| Chess Puzzles | 0% | — |
| LiveBench Reasoning | 32.8% | — |
| Mystery Game Puzzles | 12% | — |
| DTBench | 54.4% | — |
| LiveBench Data Analysis | 50% | — |
| LMCA | 10.4% | — |
| Epoch Capabilities Index | 126.56 | — |
| LiveBench | 41.3% | — |
| PIQA | 88.7% | — |
Math MiMo-V2-Flash leads
GPT-4o mini: 9.9 (#307), MiMo-V2-Flash: 35.6 (#141)
| Benchmark | GPT-4o mini | MiMo-V2-Flash |
|---|---|---|
| LMArena Math | 1267 | 1396 |
| FrontierMath (Tiers 1-3) | 0.7% | — |
| OTIS Mock AIME 2024-2025 | 6.9% | — |
| Omni-MATH | 28% | — |
| LiveBench Math | 36.3% | — |
| MATH Level 5 | 52.6% | — |
| GSM8K | 91.3% | — |
Knowledge MiMo-V2-Flash leads
GPT-4o mini: 17.7 (#279), MiMo-V2-Flash: 39.1 (#126)
| Benchmark | GPT-4o mini | MiMo-V2-Flash |
|---|---|---|
| LMArena Expert | 1235 | 1425 |
| GPQA Diamond | 37.7% | — |
| SimpleQA Verified | 8.3% | — |
| MMLU-Pro | 60.3% | — |
| Confabulations | 37.2% | — |
| GPQA (HELM) | 36.8% | — |
| BoolQ | 88.7% | — |
| MMLU | 81.8% | — |
Multimodal Not comparable
GPT-4o mini: 25.3 (#117), MiMo-V2-Flash: —
| Benchmark | GPT-4o mini | MiMo-V2-Flash |
|---|---|---|
| LMArena Vision | 1066 | — |
| Video-MME | 64.8% | — |
| GeoBench | 64% | — |
| VPCT | 34% | — |
Multilingual MiMo-V2-Flash leads
GPT-4o mini: 42.2 (#194), MiMo-V2-Flash: 51.1 (#109)
| Benchmark | GPT-4o mini | MiMo-V2-Flash |
|---|---|---|
| LMArena Non-English | 1266 | 1391 |
| LMArena Chinese | 1264 | 1463 |
| LMArena French | 1296 | 1429 |
| LMArena German | 1272 | 1395 |
| LMArena Japanese | 1216 | 1324 |
| LMArena Korean | 1195 | 1358 |
| LMArena Russian | 1275 | 1387 |
| LMArena Spanish | 1276 | 1420 |
Instruction Following MiMo-V2-Flash leads
GPT-4o mini: 62.1 (#234), MiMo-V2-Flash: 73.7 (#115)
| Benchmark | GPT-4o mini | MiMo-V2-Flash |
|---|---|---|
| LMArena Instruction Following | 1259 | 1392 |
| LiveBench Instruction Following | 56.8% | — |
| IFEval | 78.2% | — |
Long Context MiMo-V2-Flash leads
GPT-4o mini: 39.1 (#181), MiMo-V2-Flash: 43.0 (#106)
| Benchmark | GPT-4o mini | MiMo-V2-Flash |
|---|---|---|
| LMArena Longer Query | 1289 | 1409 |
Writing & Preference MiMo-V2-Flash leads
GPT-4o mini: 39.7 (#243), MiMo-V2-Flash: 59.9 (#101)
| Benchmark | GPT-4o mini | MiMo-V2-Flash |
|---|---|---|
| LMArena Text | 1286 | 1411 |
| LMArena Creative Writing | 1268 | 1375 |
| LMArena Multi-Turn | 1285 | 1404 |
| Short-Story Creative Writing | 67.2% | — |
| EQ-Bench Creative Writing | 873 | — |
| WildBench | 79.1% | — |
| LiveBench Language | 28.6% | — |
Frequently asked questions
Is GPT-4o mini better than MiMo-V2-Flash?
MiMo-V2-Flash is the stronger model overall, scoring 40.8 to 25.4 on the Noometry Index.
Which is cheaper, GPT-4o mini or MiMo-V2-Flash?
MiMo-V2-Flash is cheaper. It lists at $0.14 per million input tokens and $0.28 per million output tokens; GPT-4o mini lists at $0.15 and $0.60.
Is GPT-4o mini or MiMo-V2-Flash better for coding?
MiMo-V2-Flash scores higher on coding benchmarks: 35.8 versus 21.6 in the Noometry coding category.
Which has the bigger context window?
MiMo-V2-Flash does, with 262K tokens against 128K.
How many benchmarks do GPT-4o mini and MiMo-V2-Flash share?
17 benchmarks have published results for both models. GPT-4o mini has 60 scored results on Noometry and MiMo-V2-Flash has 21.