Noometry

Model comparison

Grok 4.20 Multi-Agent vs MiMo-V2.6-Pro

MiMo-V2.6-Pro is the stronger model overall, scoring 46.7 to 45.5 on the Noometry Index.

Last verified . 13 shared benchmarks.

Grok 4.20 Multi-Agent xAI

45.5

Rank #62 Confirmed

MiMo-V2.6-Pro Xiaomi

46.7

Rank #55 Confirmed

Summary

  • They share 13 benchmarks with published results for both. Grok 4.20 Multi-Agent scores higher in 1 category and MiMo-V2.6-Pro in 8 categories; 8 gaps are clear of the uncertainty.
  • The widest gap is in reasoning, where Grok 4.20 Multi-Agent leads 42.4 to 30.4.
  • MiMo-V2.6-Pro is cheaper at $0.43 / $0.87 per million input/output tokens, against $1.25 / $2.50 for Grok 4.20 Multi-Agent.
  • 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.

Side by side

Grok 4.20 Multi-AgentMiMo-V2.6-Pro
ProviderxAIXiaomi
Noometry Index45.546.7
Released2026-03-092026-09-22
WeightsProprietaryOpen
Context window1M1.05M
Max output30K131K
Input $ / M tokens$1.25$0.43
Output $ / M tokens$2.50$0.87
Results tracked2014

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Category by category

Coding MiMo-V2.6-Pro leads

Grok 4.20 Multi-Agent: 42.4 (#91), MiMo-V2.6-Pro: 53.2 (#27)

BenchmarkGrok 4.20 Multi-AgentMiMo-V2.6-Pro
LMArena Coding14581538
LMArena WebDev—1618

Agentic & Tool Use Not comparable

Grok 4.20 Multi-Agent: —, MiMo-V2.6-Pro: —

BenchmarkGrok 4.20 Multi-AgentMiMo-V2.6-Pro
LMArena Search1204—

Reasoning Grok 4.20 Multi-Agent leads

Grok 4.20 Multi-Agent: 42.4 (#44), MiMo-V2.6-Pro: 30.4 (#76)

BenchmarkGrok 4.20 Multi-AgentMiMo-V2.6-Pro
LMArena Hard Prompts14481511
NYT Connections (extended)89.6%—

Math MiMo-V2.6-Pro leads

Grok 4.20 Multi-Agent: 36.6 (#106), MiMo-V2.6-Pro: 37.9 (#91)

BenchmarkGrok 4.20 Multi-AgentMiMo-V2.6-Pro
LMArena Math14411497

Knowledge MiMo-V2.6-Pro leads

Grok 4.20 Multi-Agent: 39.7 (#116), MiMo-V2.6-Pro: 43.0 (#85)

BenchmarkGrok 4.20 Multi-AgentMiMo-V2.6-Pro
LMArena Expert14451548

Multimodal Too close to call

Grok 4.20 Multi-Agent: 39.8 (#44), MiMo-V2.6-Pro: 40.2 (#40)

BenchmarkGrok 4.20 Multi-AgentMiMo-V2.6-Pro
LMArena Vision12591265

Multilingual MiMo-V2.6-Pro leads

Grok 4.20 Multi-Agent: 54.6 (#40), MiMo-V2.6-Pro: 57.0 (#15)

BenchmarkGrok 4.20 Multi-AgentMiMo-V2.6-Pro
LMArena Non-English14401474
LMArena Chinese14751532
LMArena Russian14571481
LMArena French1467—
LMArena German1456—
LMArena Japanese1405—
LMArena Korean1416—
LMArena Spanish1447—

Instruction Following MiMo-V2.6-Pro leads

Grok 4.20 Multi-Agent: 75.0 (#80), MiMo-V2.6-Pro: 78.2 (#10)

BenchmarkGrok 4.20 Multi-AgentMiMo-V2.6-Pro
LMArena Instruction Following14201490

Long Context MiMo-V2.6-Pro leads

Grok 4.20 Multi-Agent: 43.7 (#84), MiMo-V2.6-Pro: 46.0 (#26)

BenchmarkGrok 4.20 Multi-AgentMiMo-V2.6-Pro
LMArena Longer Query14301500

Writing & Preference MiMo-V2.6-Pro leads

Grok 4.20 Multi-Agent: 64.1 (#57), MiMo-V2.6-Pro: 66.9 (#32)

BenchmarkGrok 4.20 Multi-AgentMiMo-V2.6-Pro
LMArena Text14501491
LMArena Creative Writing14351465
LMArena Multi-Turn14511463

Frequently asked questions

Is Grok 4.20 Multi-Agent better than MiMo-V2.6-Pro?

MiMo-V2.6-Pro is the stronger model overall, scoring 46.7 to 45.5 on the Noometry Index.

Which is cheaper, Grok 4.20 Multi-Agent 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; Grok 4.20 Multi-Agent lists at $1.25 and $2.50.

Is Grok 4.20 Multi-Agent or MiMo-V2.6-Pro better for coding?

MiMo-V2.6-Pro scores higher on coding benchmarks: 53.2 versus 42.4 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 Grok 4.20 Multi-Agent and MiMo-V2.6-Pro share?

13 benchmarks have published results for both models. Grok 4.20 Multi-Agent has 20 scored results on Noometry and MiMo-V2.6-Pro has 14.

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