Noometry

Model comparison

Claude Opus 5.5 vs MiMo-V2-Omni

Claude Opus 5.5 is the stronger model overall, scoring 68.6 to 43.6 on the Noometry Index. MiMo-V2-Omni costs 46× less per token, which makes it the better buy when Claude Opus 5.5's lead doesn't matter for your workload.

Last verified . 15 shared benchmarks.

Claude Opus 5.5 Anthropic

68.6

Rank #3 Confirmed

MiMo-V2-Omni Xiaomi

43.6

Rank #88 Confirmed

Summary

  • They share 15 benchmarks with published results for both. Claude Opus 5.5 scores higher in 9 categories and MiMo-V2-Omni in 0 categories; 9 gaps are clear of the uncertainty.
  • The widest gap is in math, where Claude Opus 5.5 leads 91.8 to 39.1.
  • MiMo-V2-Omni is cheaper at $0.14 / $0.28 per million input/output tokens, against $4 / $20 for Claude Opus 5.5.
  • Claude Opus 5.5 accepts more context: 1M tokens versus 262K.

Side by side

Claude Opus 5.5MiMo-V2-Omni
ProviderAnthropicXiaomi
Noometry Index68.643.6
Released2026-09-222026-03-18
WeightsProprietaryProprietary
Context window1M262K
Max output128K131K
Input $ / M tokens$4$0.14
Output $ / M tokens$20$0.28
Results tracked4418

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Category by category

Coding Claude Opus 5.5 leads

Claude Opus 5.5: 71.9 (#3), MiMo-V2-Omni: 43.3 (#89)

BenchmarkClaude Opus 5.5MiMo-V2-Omni
LMArena Coding15471466
FrontierCode54.6%—
CursorBench57.8%—
LMArena WebDev1813—
FrontierSWE62.3%—
SciCode66.9%—
MirrorCode77.4%—
ALE-Bench2,147—

Agentic & Tool Use Not comparable

Claude Opus 5.5: 45.3 (#15), MiMo-V2-Omni: —

BenchmarkClaude Opus 5.5MiMo-V2-Omni
APEX-Agents73.5%—
GDP.pdf30.6%—
Vending-Bench 29,235—

Reasoning Claude Opus 5.5 leads

Claude Opus 5.5: 80.2 (#3), MiMo-V2-Omni: 29.7 (#88)

BenchmarkClaude Opus 5.5MiMo-V2-Omni
LMArena Hard Prompts15351445
ARC-AGI-293.3%—
NYT Connections (extended)88.5%—
ARC-AGI-198.5%—
CritPt31.7%—
EBR-Bench71.4%—
Mystery Game Puzzles71%—
DTBench98.9%—
LMCA68.2%—
Epoch Capabilities Index167.33—

Math Claude Opus 5.5 leads

Claude Opus 5.5: 91.8 (#3), MiMo-V2-Omni: 39.1 (#115)

BenchmarkClaude Opus 5.5MiMo-V2-Omni
LMArena Math15061430
FrontierMath (Tiers 1-3)91.2%—
FrontierMath Tier 495%—
OTIS Mock AIME 2024-2025100%—
ProofBench100%—
FrontierMath Erdős2.9%—

Knowledge Claude Opus 5.5 leads

Claude Opus 5.5: 66.4 (#10), MiMo-V2-Omni: 40.5 (#118)

BenchmarkClaude Opus 5.5MiMo-V2-Omni
LMArena Expert15471449
GPQA Diamond90.6%—
SimpleQA Verified72.2%—

Multimodal Claude Opus 5.5 leads

Claude Opus 5.5: 57.8 (#1), MiMo-V2-Omni: 38.6 (#63)

BenchmarkClaude Opus 5.5MiMo-V2-Omni
LMArena Vision13211228
Blueprint-Bench 251.2%—
Furniture Assembly83.3%—

Multilingual Claude Opus 5.5 leads

Claude Opus 5.5: 59.1 (#2), MiMo-V2-Omni: 51.8 (#102)

BenchmarkClaude Opus 5.5MiMo-V2-Omni
LMArena Non-English15071404
LMArena Chinese15881465
LMArena French15141447
LMArena Russian15201412
LMArena Spanish15071434
LMArena German—1399
LMArena Japanese—1317
LMArena Korean—1355

Instruction Following Claude Opus 5.5 leads

Claude Opus 5.5: 80.0 (#3), MiMo-V2-Omni: 75.2 (#66)

BenchmarkClaude Opus 5.5MiMo-V2-Omni
LMArena Instruction Following15371428

Long Context Claude Opus 5.5 leads

Claude Opus 5.5: 47.1 (#19), MiMo-V2-Omni: 44.1 (#76)

BenchmarkClaude Opus 5.5MiMo-V2-Omni
LMArena Longer Query15321442

Writing & Preference Claude Opus 5.5 leads

Claude Opus 5.5: 78.2 (#3), MiMo-V2-Omni: 61.4 (#87)

BenchmarkClaude Opus 5.5MiMo-V2-Omni
LMArena Text15151423
LMArena Creative Writing15331392
LMArena Multi-Turn14991445
EQ-Bench Creative Writing2050—

Frequently asked questions

Is Claude Opus 5.5 better than MiMo-V2-Omni?

Claude Opus 5.5 is the stronger model overall, scoring 68.6 to 43.6 on the Noometry Index. MiMo-V2-Omni costs 46× less per token, which makes it the better buy when Claude Opus 5.5's lead doesn't matter for your workload.

Which is cheaper, Claude Opus 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 Opus 5.5 lists at $4 and $20.

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

Claude Opus 5.5 scores higher on coding benchmarks: 71.9 versus 43.3 in the Noometry coding category.

Which has the bigger context window?

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

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

15 benchmarks have published results for both models. Claude Opus 5.5 has 44 scored results on Noometry and MiMo-V2-Omni has 18.

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