Model comparison
Kimi K2.5 vs MiMo-V2.6-Flash
Kimi K2.5 and MiMo-V2.6-Flash score almost the same on the Noometry Index (48.1 vs 48.5), 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. Kimi K2.5 scores higher in 4 categories and MiMo-V2.6-Flash in 5 categories; 6 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where Kimi K2.5 leads 53.6 to 42.2.
- The biggest single-benchmark swing is CritPt: 3.1% for Kimi K2.5 and 12% for MiMo-V2.6-Flash.
- MiMo-V2.6-Flash is cheaper at $0.14 / $0.28 per million input/output tokens, against $0.45 / $2.25 for Kimi K2.5.
- MiMo-V2.6-Flash accepts more context: 1.05M tokens versus 262K.
Side by side
| Kimi K2.5 | MiMo-V2.6-Flash | |
|---|---|---|
| Provider | Moonshot AI | Xiaomi |
| Noometry Index | 48.1 | 48.5 |
| Released | 2026-01-27 | 2026-09-21 |
| Weights | Open | Open |
| Context window | 262K | 1.05M |
| Max output | 262K | 131K |
| Input $ / M tokens | $0.45 | $0.14 |
| Output $ / M tokens | $2.25 | $0.28 |
| Results tracked | 51 | 19 |
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Category by category
Coding MiMo-V2.6-Flash leads
Kimi K2.5: 48.8 (#53), MiMo-V2.6-Flash: 53.4 (#30)
| Benchmark | Kimi K2.5 | MiMo-V2.6-Flash |
|---|---|---|
| LMArena WebDev | 1437 | 1637 |
| SciCode | 49% | 51.3% |
| LMArena Coding | 1474 | 1504 |
| SWE-bench Verified | 73.8% | — |
| SWE-bench Verified (bash only) | 70.8% | — |
| SWE-bench Multilingual | 67.3% | — |
| WeirdML | 45.6% | — |
| ALE-Bench | 821.65 | — |
Agentic & Tool Use Not comparable
Kimi K2.5: 34.2 (#48), MiMo-V2.6-Flash: —
| Benchmark | Kimi K2.5 | MiMo-V2.6-Flash |
|---|---|---|
| Terminal-Bench | 43.2% | — |
| OSWorld | 63.3% | — |
| Vending-Bench 2 | 1,198 | — |
Reasoning MiMo-V2.6-Flash leads
Kimi K2.5: 31.2 (#80), MiMo-V2.6-Flash: 36.5 (#66)
| Benchmark | Kimi K2.5 | MiMo-V2.6-Flash |
|---|---|---|
| CritPt | 3.1% | 12% |
| LMArena Hard Prompts | 1453 | 1482 |
| ARC-AGI-2 | 11.8% | — |
| SimpleBench | 46.8% | — |
| Kagi LLM Benchmark | 78.5% | — |
| NYT Connections (extended) | 69.9% | — |
| ARC-AGI-1 | 65.3% | — |
| Chess Puzzles | 12% | — |
| EnigmaEval | 3.4% | — |
| Thematic Generalization | 69.4% | — |
| Epoch Capabilities Index | 148.03 | — |
Math Too close to call
Kimi K2.5: 51.8 (#53), MiMo-V2.6-Flash: 51.9 (#52)
| Benchmark | Kimi K2.5 | MiMo-V2.6-Flash |
|---|---|---|
| LMArena Math | 1470 | 1468 |
| MathArena Final-Answer Competitions | 62.3% | — |
| OTIS Mock AIME 2024-2025 | 92.2% | — |
| ProofBench | — | 63% |
| FrontierMath (Feb 2025 set) | 27.9% | — |
| FrontierMath Tier 4 (v1) | 4.2% | — |
Knowledge Kimi K2.5 leads
Kimi K2.5: 53.6 (#56), MiMo-V2.6-Flash: 42.2 (#99)
| Benchmark | Kimi K2.5 | MiMo-V2.6-Flash |
|---|---|---|
| LMArena Expert | 1466 | 1501 |
| GPQA Diamond | 87.6% | — |
| Humanity's Last Exam | 24.4% | — |
| SimpleQA Verified | 34.3% | — |
| Vectara Hallucination Rate | 14.2% | — |
Multimodal Too close to call
Kimi K2.5: 41.1 (#39), MiMo-V2.6-Flash: 40.5 (#47)
| Benchmark | Kimi K2.5 | MiMo-V2.6-Flash |
|---|---|---|
| LMArena Vision | 1269 | 1259 |
| LMArena Document | 1430 | — |
Multilingual Too close to call
Kimi K2.5: 53.9 (#53), MiMo-V2.6-Flash: 54.0 (#51)
| Benchmark | Kimi K2.5 | MiMo-V2.6-Flash |
|---|---|---|
| LMArena Non-English | 1433 | 1434 |
| LMArena Chinese | 1495 | 1511 |
| LMArena French | 1454 | 1475 |
| LMArena Russian | 1435 | 1409 |
| LMArena Spanish | 1450 | 1456 |
| LMArena German | 1441 | — |
| LMArena Japanese | 1421 | — |
| LMArena Korean | 1410 | — |
Instruction Following MiMo-V2.6-Flash leads
Kimi K2.5: 75.3 (#64), MiMo-V2.6-Flash: 76.8 (#35)
| Benchmark | Kimi K2.5 | MiMo-V2.6-Flash |
|---|---|---|
| LMArena Instruction Following | 1431 | 1463 |
Long Context Kimi K2.5 leads
Kimi K2.5: 52.1 (#7), MiMo-V2.6-Flash: 44.8 (#57)
| Benchmark | Kimi K2.5 | MiMo-V2.6-Flash |
|---|---|---|
| LMArena Longer Query | 1445 | 1463 |
| Fiction.LiveBench | 86.1% | — |
| CL-bench | 19.3% | — |
| CL-bench Life | 13.2% | — |
Writing & Preference Kimi K2.5 leads
Kimi K2.5: 65.1 (#53), MiMo-V2.6-Flash: 63.1 (#67)
| Benchmark | Kimi K2.5 | MiMo-V2.6-Flash |
|---|---|---|
| LMArena Text | 1445 | 1455 |
| LMArena Creative Writing | 1423 | 1400 |
| LMArena Multi-Turn | 1444 | 1451 |
| EQ-Bench Creative Writing | 1579 | — |
Frequently asked questions
Is Kimi K2.5 better than MiMo-V2.6-Flash?
Kimi K2.5 and MiMo-V2.6-Flash score almost the same on the Noometry Index (48.1 vs 48.5), so choose on price, context window or the category you care about most.
Which is cheaper, Kimi K2.5 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; Kimi K2.5 lists at $0.45 and $2.25.
Is Kimi K2.5 or MiMo-V2.6-Flash better for coding?
MiMo-V2.6-Flash scores higher on coding benchmarks: 53.4 versus 48.8 in the Noometry coding category.
Which has the bigger context window?
MiMo-V2.6-Flash does, with 1.05M tokens against 262K.
How many benchmarks do Kimi K2.5 and MiMo-V2.6-Flash share?
18 benchmarks have published results for both models. Kimi K2.5 has 51 scored results on Noometry and MiMo-V2.6-Flash has 19.