# Claude Sonnet 5.5 vs MiMo-V2-Omni

> Claude Sonnet 5.5 is the stronger model overall, scoring 60.5 to 42.9 on the Noometry Index. MiMo-V2-Omni costs 23× less per token, which makes it the better buy when Claude Sonnet 5.5's lead doesn't matter for your workload.

- Canonical page: https://noometry.com/compare/claude-sonnet-5-5-vs-mimo-v2-omni
- Last updated: 2026-10-10
- Shared benchmarks: 0

## Summary

- The widest gap is in math, where Claude Sonnet 5.5 leads 88.7 to 36.4.
- MiMo-V2-Omni is cheaper at $0.14 / $0.28 per million input/output tokens, against $2 / $10 for Claude Sonnet 5.5.
- Claude Sonnet 5.5 accepts more context: 1M tokens versus 262K.

## Snapshot

| | Claude Sonnet 5.5 | MiMo-V2-Omni |
|---|---|---|
| Provider | Anthropic | Xiaomi |
| Noometry Index | 60.5 | 42.9 |
| Rank | 10 | 91 |
| Context | 1M | 262K |
| Input $/M | $2 | $0.14 |
| Output $/M | $10 | $0.28 |
| Weights | Proprietary | Proprietary |

## Coding

- Claude Sonnet 5.5: 65.5 (#6)
- MiMo-V2-Omni: 42.7 (#87)

| Benchmark | Claude Sonnet 5.5 | MiMo-V2-Omni |
|---|---|---|
| FrontierCode | 52.1% | — |
| CursorBench | 55.5% | — |
| LMArena WebDev | 1699 | — |
| FrontierSWE | 61.9% | — |
| SciCode | 61% | — |
| LMArena Coding | — | 1467 |
| ALE-Bench | 1,819 | — |

## Agentic & Tool Use

- Claude Sonnet 5.5: 44.9 (#14)
- MiMo-V2-Omni: —

| Benchmark | Claude Sonnet 5.5 | MiMo-V2-Omni |
|---|---|---|
| APEX-Agents | 75.5% | — |

## Reasoning

- Claude Sonnet 5.5: 52.4 (#29)
- MiMo-V2-Omni: 28.6 (#86)

| Benchmark | Claude Sonnet 5.5 | MiMo-V2-Omni |
|---|---|---|
| CritPt | 31.4% | — |
| LMArena Hard Prompts | — | 1445 |
| Mystery Game Puzzles | 65% | — |

## Math

- Claude Sonnet 5.5: 88.7 (#4)
- MiMo-V2-Omni: 36.4 (#112)

| Benchmark | Claude Sonnet 5.5 | MiMo-V2-Omni |
|---|---|---|
| FrontierMath (Tiers 1-3) | 88.8% | — |
| FrontierMath Tier 4 | 80.5% | — |
| OTIS Mock AIME 2024-2025 | 100% | — |
| ProofBench | 100% | — |
| LMArena Math | — | 1432 |

## Knowledge

- Claude Sonnet 5.5: 66.0 (#11)
- MiMo-V2-Omni: 39.9 (#114)

| Benchmark | Claude Sonnet 5.5 | MiMo-V2-Omni |
|---|---|---|
| GPQA Diamond | 95.6% | — |
| SimpleQA Verified | 46.5% | — |
| LMArena Expert | — | 1449 |

## Multimodal

- Claude Sonnet 5.5: 53.2 (#5)
- MiMo-V2-Omni: 37.9 (#62)

| Benchmark | Claude Sonnet 5.5 | MiMo-V2-Omni |
|---|---|---|
| LMArena Vision | — | 1228 |
| Furniture Assembly | 75% | — |

## Multilingual

- Claude Sonnet 5.5: —
- MiMo-V2-Omni: 52.0 (#97)

| Benchmark | Claude Sonnet 5.5 | MiMo-V2-Omni |
|---|---|---|
| LMArena Non-English | — | 1404 |
| LMArena Chinese | — | 1469 |
| LMArena French | — | 1448 |
| LMArena German | — | 1398 |
| LMArena Japanese | — | 1318 |
| LMArena Korean | — | 1355 |
| LMArena Russian | — | 1412 |
| LMArena Spanish | — | 1432 |

## Instruction Following

- Claude Sonnet 5.5: —
- MiMo-V2-Omni: 75.4 (#62)

| Benchmark | Claude Sonnet 5.5 | MiMo-V2-Omni |
|---|---|---|
| LMArena Instruction Following | — | 1428 |

## Long Context

- Claude Sonnet 5.5: —
- MiMo-V2-Omni: 44.1 (#72)

| Benchmark | Claude Sonnet 5.5 | MiMo-V2-Omni |
|---|---|---|
| LMArena Longer Query | — | 1442 |

## Writing & Preference

- Claude Sonnet 5.5: —
- MiMo-V2-Omni: 61.6 (#83)

| Benchmark | Claude Sonnet 5.5 | MiMo-V2-Omni |
|---|---|---|
| LMArena Text | — | 1424 |
| LMArena Creative Writing | — | 1393 |
| LMArena Multi-Turn | — | 1446 |

## FAQ

### Is Claude Sonnet 5.5 better than MiMo-V2-Omni?

Claude Sonnet 5.5 is the stronger model overall, scoring 60.5 to 42.9 on the Noometry Index. MiMo-V2-Omni costs 23× less per token, which makes it the better buy when Claude Sonnet 5.5's lead doesn't matter for your workload.

### Which is cheaper, Claude Sonnet 5.5 or MiMo-V2-Omni?

MiMo-V2-Omni is cheaper. It lists at $0.14 per million input tokens and $0.28 per million output tokens; Claude Sonnet 5.5 lists at $2 and $10.

### Is Claude Sonnet 5.5 or MiMo-V2-Omni better for coding?

Claude Sonnet 5.5 scores higher on coding benchmarks: 65.5 versus 42.7 in the Noometry coding category.

### Which has the bigger context window?

Claude Sonnet 5.5 does, with 1M tokens against 262K.

### How many benchmarks do Claude Sonnet 5.5 and MiMo-V2-Omni share?

0 benchmarks have published results for both models. Claude Sonnet 5.5 has 16 scored results on Noometry and MiMo-V2-Omni has 18.