Model comparison
Mercury 2.5 vs MiMo-V2.6-Flash
MiMo-V2.6-Flash is the stronger model overall, scoring 48.5 to 33.5 on the Noometry Index. Mercury 2.5 costs 2.6× less per token, which makes it the better buy when MiMo-V2.6-Flash's lead doesn't matter for your workload.
Last verified . 3 shared benchmarks.
Summary
- They share 3 benchmarks with published results for both. Mercury 2.5 scores higher in 0 categories and MiMo-V2.6-Flash in 3 categories; 3 gaps are clear of the uncertainty.
- The widest gap is in math, where MiMo-V2.6-Flash leads 51.9 to 23.3.
- The biggest single-benchmark swing is ProofBench: 3% for Mercury 2.5 and 63% for MiMo-V2.6-Flash.
- Mercury 2.5 is cheaper at $0.04 / $0.15 per million input/output tokens, against $0.14 / $0.28 for MiMo-V2.6-Flash.
- MiMo-V2.6-Flash accepts more context: 1.05M tokens versus 260K.
- MiMo-V2.6-Flash has downloadable open weights; the other is API-only.
Side by side
| Mercury 2.5 | MiMo-V2.6-Flash | |
|---|---|---|
| Provider | Inception | Xiaomi |
| Noometry Index | 33.5 | 48.5 |
| Released | 2026-09-08 | 2026-09-21 |
| Weights | Proprietary | Open |
| Context window | 260K | 1.05M |
| Max output | 66K | 131K |
| Input $ / M tokens | $0.04 | $0.14 |
| Output $ / M tokens | $0.15 | $0.28 |
| Results tracked | 4 | 19 |
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Category by category
Coding MiMo-V2.6-Flash leads
Mercury 2.5: 39.5 (#156), MiMo-V2.6-Flash: 53.4 (#30)
| Benchmark | Mercury 2.5 | MiMo-V2.6-Flash |
|---|---|---|
| SciCode | 38.5% | 51.3% |
| LMArena WebDev | — | 1637 |
| LMArena Coding | — | 1504 |
| ALE-Bench | 301.65 | — |
Reasoning MiMo-V2.6-Flash leads
Mercury 2.5: 22.4 (#193), MiMo-V2.6-Flash: 36.5 (#66)
| Benchmark | Mercury 2.5 | MiMo-V2.6-Flash |
|---|---|---|
| CritPt | 0% | 12% |
| LMArena Hard Prompts | — | 1482 |
Math MiMo-V2.6-Flash leads
Mercury 2.5: 23.3 (#272), MiMo-V2.6-Flash: 51.9 (#52)
| Benchmark | Mercury 2.5 | MiMo-V2.6-Flash |
|---|---|---|
| ProofBench | 3% | 63% |
| LMArena Math | — | 1468 |
Knowledge Not comparable
Mercury 2.5: —, MiMo-V2.6-Flash: 42.2 (#99)
| Benchmark | Mercury 2.5 | MiMo-V2.6-Flash |
|---|---|---|
| LMArena Expert | — | 1501 |
Multimodal Not comparable
Mercury 2.5: —, MiMo-V2.6-Flash: 40.5 (#47)
| Benchmark | Mercury 2.5 | MiMo-V2.6-Flash |
|---|---|---|
| LMArena Vision | — | 1259 |
Multilingual Not comparable
Mercury 2.5: —, MiMo-V2.6-Flash: 54.0 (#51)
| Benchmark | Mercury 2.5 | MiMo-V2.6-Flash |
|---|---|---|
| LMArena Non-English | — | 1434 |
| LMArena Chinese | — | 1511 |
| LMArena French | — | 1475 |
| LMArena Russian | — | 1409 |
| LMArena Spanish | — | 1456 |
Instruction Following Not comparable
Mercury 2.5: —, MiMo-V2.6-Flash: 76.8 (#35)
| Benchmark | Mercury 2.5 | MiMo-V2.6-Flash |
|---|---|---|
| LMArena Instruction Following | — | 1463 |
Long Context Not comparable
Mercury 2.5: —, MiMo-V2.6-Flash: 44.8 (#57)
| Benchmark | Mercury 2.5 | MiMo-V2.6-Flash |
|---|---|---|
| LMArena Longer Query | — | 1463 |
Writing & Preference Not comparable
Mercury 2.5: —, MiMo-V2.6-Flash: 63.1 (#67)
| Benchmark | Mercury 2.5 | MiMo-V2.6-Flash |
|---|---|---|
| LMArena Text | — | 1455 |
| LMArena Creative Writing | — | 1400 |
| LMArena Multi-Turn | — | 1451 |
Frequently asked questions
Is Mercury 2.5 better than MiMo-V2.6-Flash?
MiMo-V2.6-Flash is the stronger model overall, scoring 48.5 to 33.5 on the Noometry Index. Mercury 2.5 costs 2.6× less per token, which makes it the better buy when MiMo-V2.6-Flash's lead doesn't matter for your workload.
Which is cheaper, Mercury 2.5 or MiMo-V2.6-Flash?
Mercury 2.5 is cheaper. It lists at $0.04 per million input tokens and $0.15 per million output tokens; MiMo-V2.6-Flash lists at $0.14 and $0.28.
Is Mercury 2.5 or MiMo-V2.6-Flash better for coding?
MiMo-V2.6-Flash scores higher on coding benchmarks: 53.4 versus 39.5 in the Noometry coding category.
Which has the bigger context window?
MiMo-V2.6-Flash does, with 1.05M tokens against 260K.
How many benchmarks do Mercury 2.5 and MiMo-V2.6-Flash share?
3 benchmarks have published results for both models. Mercury 2.5 has 4 scored results on Noometry and MiMo-V2.6-Flash has 19.