# Claude Sonnet 5.5 vs MiMo-V2.6-Pro

> Claude Sonnet 5.5 is the stronger model overall, scoring 60.5 to 46.7 on the Noometry Index. MiMo-V2.6-Pro costs 7.4× 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-v2-6-pro
- Last updated: 2026-10-10
- Shared benchmarks: 1

## Summary

- They share 1 benchmark with published results for both. Claude Sonnet 5.5 scores higher in 5 categories and MiMo-V2.6-Pro in 0 categories; 5 gaps are clear of the uncertainty.
- The widest gap is in math, where Claude Sonnet 5.5 leads 88.7 to 37.9.
- MiMo-V2.6-Pro is cheaper at $0.43 / $0.87 per million input/output tokens, against $2 / $10 for Claude Sonnet 5.5.
- MiMo-V2.6-Pro accepts more context: 1.05M tokens versus 1M.
- MiMo-V2.6-Pro has downloadable open weights; the other is API-only.

## Snapshot

| | Claude Sonnet 5.5 | MiMo-V2.6-Pro |
|---|---|---|
| Provider | Anthropic | Xiaomi |
| Noometry Index | 60.5 | 46.7 |
| Rank | 10 | 55 |
| Context | 1M | 1.05M |
| Input $/M | $2 | $0.43 |
| Output $/M | $10 | $0.87 |
| Weights | Proprietary | Open |

## Coding

- Claude Sonnet 5.5: 65.5 (#6)
- MiMo-V2.6-Pro: 53.2 (#27)

| Benchmark | Claude Sonnet 5.5 | MiMo-V2.6-Pro |
|---|---|---|
| LMArena WebDev | 1699 | 1618 |
| FrontierCode | 52.1% | — |
| CursorBench | 55.5% | — |
| FrontierSWE | 61.9% | — |
| SciCode | 61% | — |
| LMArena Coding | — | 1538 |
| ALE-Bench | 1,819 | — |

## Agentic & Tool Use

- Claude Sonnet 5.5: 44.9 (#14)
- MiMo-V2.6-Pro: —

| Benchmark | Claude Sonnet 5.5 | MiMo-V2.6-Pro |
|---|---|---|
| APEX-Agents | 75.5% | — |

## Reasoning

- Claude Sonnet 5.5: 52.4 (#29)
- MiMo-V2.6-Pro: 30.4 (#76)

| Benchmark | Claude Sonnet 5.5 | MiMo-V2.6-Pro |
|---|---|---|
| CritPt | 31.4% | — |
| LMArena Hard Prompts | — | 1511 |
| Mystery Game Puzzles | 65% | — |

## Math

- Claude Sonnet 5.5: 88.7 (#4)
- MiMo-V2.6-Pro: 37.9 (#91)

| Benchmark | Claude Sonnet 5.5 | MiMo-V2.6-Pro |
|---|---|---|
| FrontierMath (Tiers 1-3) | 88.8% | — |
| FrontierMath Tier 4 | 80.5% | — |
| OTIS Mock AIME 2024-2025 | 100% | — |
| ProofBench | 100% | — |
| LMArena Math | — | 1497 |

## Knowledge

- Claude Sonnet 5.5: 66.0 (#11)
- MiMo-V2.6-Pro: 43.0 (#85)

| Benchmark | Claude Sonnet 5.5 | MiMo-V2.6-Pro |
|---|---|---|
| GPQA Diamond | 95.6% | — |
| SimpleQA Verified | 46.5% | — |
| LMArena Expert | — | 1548 |

## Multimodal

- Claude Sonnet 5.5: 53.2 (#5)
- MiMo-V2.6-Pro: 40.2 (#40)

| Benchmark | Claude Sonnet 5.5 | MiMo-V2.6-Pro |
|---|---|---|
| LMArena Vision | — | 1265 |
| Furniture Assembly | 75% | — |

## Multilingual

- Claude Sonnet 5.5: —
- MiMo-V2.6-Pro: 57.0 (#15)

| Benchmark | Claude Sonnet 5.5 | MiMo-V2.6-Pro |
|---|---|---|
| LMArena Non-English | — | 1474 |
| LMArena Chinese | — | 1532 |
| LMArena Russian | — | 1481 |

## Instruction Following

- Claude Sonnet 5.5: —
- MiMo-V2.6-Pro: 78.2 (#10)

| Benchmark | Claude Sonnet 5.5 | MiMo-V2.6-Pro |
|---|---|---|
| LMArena Instruction Following | — | 1490 |

## Long Context

- Claude Sonnet 5.5: —
- MiMo-V2.6-Pro: 46.0 (#26)

| Benchmark | Claude Sonnet 5.5 | MiMo-V2.6-Pro |
|---|---|---|
| LMArena Longer Query | — | 1500 |

## Writing & Preference

- Claude Sonnet 5.5: —
- MiMo-V2.6-Pro: 66.9 (#32)

| Benchmark | Claude Sonnet 5.5 | MiMo-V2.6-Pro |
|---|---|---|
| LMArena Text | — | 1491 |
| LMArena Creative Writing | — | 1465 |
| LMArena Multi-Turn | — | 1463 |

## FAQ

### Is Claude Sonnet 5.5 better than MiMo-V2.6-Pro?

Claude Sonnet 5.5 is the stronger model overall, scoring 60.5 to 46.7 on the Noometry Index. MiMo-V2.6-Pro costs 7.4× 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-V2.6-Pro?

MiMo-V2.6-Pro is cheaper. It lists at $0.43 per million input tokens and $0.87 per million output tokens; Claude Sonnet 5.5 lists at $2 and $10.

### Is Claude Sonnet 5.5 or MiMo-V2.6-Pro better for coding?

Claude Sonnet 5.5 scores higher on coding benchmarks: 65.5 versus 53.2 in the Noometry coding category.

### Which has the bigger context window?

MiMo-V2.6-Pro does, with 1.05M tokens against 1M.

### How many benchmarks do Claude Sonnet 5.5 and MiMo-V2.6-Pro share?

1 benchmark has published results for both models. Claude Sonnet 5.5 has 16 scored results on Noometry and MiMo-V2.6-Pro has 14.