Model comparison
GPT-6 Luna vs MiMo-V2.6-Flash
GPT-6 Luna and MiMo-V2.6-Flash score almost the same on the Noometry Index (45.1 vs 44.4), so choose on price, context window or the category you care about most.
Last verified . 12 shared benchmarks.
Summary
- They share 12 benchmarks with published results for both. GPT-6 Luna scores higher in 3 categories and MiMo-V2.6-Flash in 6 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in coding, where GPT-6 Luna leads 54.7 to 44.3.
- MiMo-V2.6-Flash is cheaper at $0.14 / $0.28 per million input/output tokens, against $0.10 / $0.50 for GPT-6 Luna.
- GPT-6 Luna accepts more context: 1.05M tokens versus 1.05M.
- MiMo-V2.6-Flash has downloadable open weights; the other is API-only.
Side by side
| GPT-6 Luna | MiMo-V2.6-Flash | |
|---|---|---|
| Provider | OpenAI | Xiaomi |
| Noometry Index | 45.1 | 44.4 |
| Released | 2026-09-22 | 2026-09-22 |
| Weights | Proprietary | Open |
| Context window | 1.05M | 1.05M |
| Max output | 128K | 131K |
| Input $ / M tokens | $0.10 | $0.14 |
| Output $ / M tokens | $0.50 | $0.28 |
| Results tracked | 18 | 13 |
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Category by category
Coding GPT-6 Luna leads
GPT-6 Luna: 54.7 (#24), MiMo-V2.6-Flash: 44.3 (#68)
| Benchmark | GPT-6 Luna | MiMo-V2.6-Flash |
|---|---|---|
| LMArena Coding | 1448 | 1516 |
| DeepSWE | 66.6% | — |
| FrontierCode | 42.4% | — |
| LMArena WebDev | 1583 | — |
Reasoning GPT-6 Luna leads
GPT-6 Luna: 31.7 (#68), MiMo-V2.6-Flash: 29.6 (#82)
| Benchmark | GPT-6 Luna | MiMo-V2.6-Flash |
|---|---|---|
| LMArena Hard Prompts | 1415 | 1481 |
| NYT Connections (extended) | 68.7% | — |
Math MiMo-V2.6-Flash leads
GPT-6 Luna: 35.6 (#140), MiMo-V2.6-Flash: 37.4 (#97)
| Benchmark | GPT-6 Luna | MiMo-V2.6-Flash |
|---|---|---|
| LMArena Math | 1396 | 1477 |
Knowledge MiMo-V2.6-Flash leads
GPT-6 Luna: 40.1 (#110), MiMo-V2.6-Flash: 42.0 (#91)
| Benchmark | GPT-6 Luna | MiMo-V2.6-Flash |
|---|---|---|
| LMArena Expert | 1458 | 1516 |
Multimodal GPT-6 Luna leads
GPT-6 Luna: 42.0 (#27), MiMo-V2.6-Flash: 40.2 (#39)
| Benchmark | GPT-6 Luna | MiMo-V2.6-Flash |
|---|---|---|
| LMArena Vision | — | 1266 |
| Furniture Assembly | 44.2% | — |
Multilingual MiMo-V2.6-Flash leads
GPT-6 Luna: 51.0 (#111), MiMo-V2.6-Flash: 54.6 (#41)
| Benchmark | GPT-6 Luna | MiMo-V2.6-Flash |
|---|---|---|
| LMArena Non-English | 1390 | 1439 |
| LMArena Chinese | 1425 | 1501 |
| LMArena Russian | 1392 | 1424 |
| LMArena Spanish | 1416 | — |
Instruction Following MiMo-V2.6-Flash leads
GPT-6 Luna: 74.7 (#85), MiMo-V2.6-Flash: 77.0 (#33)
| Benchmark | GPT-6 Luna | MiMo-V2.6-Flash |
|---|---|---|
| LMArena Instruction Following | 1414 | 1463 |
Long Context MiMo-V2.6-Flash leads
GPT-6 Luna: 43.3 (#95), MiMo-V2.6-Flash: 44.8 (#52)
| Benchmark | GPT-6 Luna | MiMo-V2.6-Flash |
|---|---|---|
| LMArena Longer Query | 1417 | 1465 |
Writing & Preference MiMo-V2.6-Flash leads
GPT-6 Luna: 58.4 (#115), MiMo-V2.6-Flash: 63.9 (#61)
| Benchmark | GPT-6 Luna | MiMo-V2.6-Flash |
|---|---|---|
| LMArena Text | 1392 | 1459 |
| LMArena Creative Writing | 1357 | 1408 |
| LMArena Multi-Turn | 1400 | 1460 |
Frequently asked questions
Is GPT-6 Luna better than MiMo-V2.6-Flash?
GPT-6 Luna and MiMo-V2.6-Flash score almost the same on the Noometry Index (45.1 vs 44.4), so choose on price, context window or the category you care about most.
Which is cheaper, GPT-6 Luna or MiMo-V2.6-Flash?
MiMo-V2.6-Flash is cheaper. It lists at $0.14 per million input tokens and $0.28 per million output tokens; GPT-6 Luna lists at $0.10 and $0.50.
Is GPT-6 Luna or MiMo-V2.6-Flash better for coding?
GPT-6 Luna scores higher on coding benchmarks: 54.7 versus 44.3 in the Noometry coding category.
Which has the bigger context window?
GPT-6 Luna does, with 1.05M tokens against 1.05M.
How many benchmarks do GPT-6 Luna and MiMo-V2.6-Flash share?
12 benchmarks have published results for both models. GPT-6 Luna has 18 scored results on Noometry and MiMo-V2.6-Flash has 13.