Noometry

Model comparison

DeepSeek V4 Flash vs Grok 4.20 Multi-Agent

DeepSeek V4 Flash is the stronger model overall, scoring 53.6 to 46.2 on the Noometry Index.

Last verified . 18 shared benchmarks.

DeepSeek V4 Flash DeepSeek

53.6

Rank #35 Confirmed

Grok 4.20 Multi-Agent xAI

46.2

Rank #65 Confirmed

Summary

  • They share 18 benchmarks with published results for both. DeepSeek V4 Flash scores higher in 6 categories and Grok 4.20 Multi-Agent in 2 categories; 5 gaps are clear of the uncertainty.
  • The widest gap is in math, where DeepSeek V4 Flash leads 60.3 to 39.4.
  • DeepSeek V4 Flash is cheaper at $0.15 / $0.60 per million input/output tokens, against $1.25 / $2.50 for Grok 4.20 Multi-Agent.
  • DeepSeek V4 Flash has downloadable open weights; the other is API-only.

Side by side

DeepSeek V4 FlashGrok 4.20 Multi-Agent
ProviderDeepSeekxAI
Noometry Index53.646.2
Released2026-04-242026-03-09
WeightsOpenProprietary
Context window1M1M
Max output393K30K
Input $ / M tokens$0.15$1.25
Output $ / M tokens$0.60$2.50
Results tracked4120

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Category by category

Coding DeepSeek V4 Flash leads

DeepSeek V4 Flash: 47.9 (#59), Grok 4.20 Multi-Agent: 43.0 (#92)

BenchmarkDeepSeek V4 FlashGrok 4.20 Multi-Agent
LMArena Coding14571457
FrontierCode18.8%—
LMArena WebDev1582—
SciCode49.9%—
WeirdML63%—
ALE-Bench1,306—

Agentic & Tool Use Not comparable

DeepSeek V4 Flash: —, Grok 4.20 Multi-Agent: —

BenchmarkDeepSeek V4 FlashGrok 4.20 Multi-Agent
LMArena Search—1204

Reasoning DeepSeek V4 Flash leads

DeepSeek V4 Flash: 53.7 (#30), Grok 4.20 Multi-Agent: 43.9 (#48)

BenchmarkDeepSeek V4 FlashGrok 4.20 Multi-Agent
NYT Connections (extended)89.6%89.6%
LMArena Hard Prompts14441448
ARC-AGI-261.4%—
SimpleBench61.1%—
Kagi LLM Benchmark52.2%—
ARC-AGI-189%—
CritPt16.6%—
Chess Puzzles33%—
Mystery Game Puzzles34%—
DTBench90.9%—
LMCA41.7%—
Epoch Capabilities Index154.49—

Math DeepSeek V4 Flash leads

DeepSeek V4 Flash: 60.3 (#37), Grok 4.20 Multi-Agent: 39.4 (#104)

BenchmarkDeepSeek V4 FlashGrok 4.20 Multi-Agent
LMArena Math14271442
FrontierMath (Tiers 1-3)57.5%—
FrontierMath Tier 424.4%—
MathArena Final-Answer Competitions76.5%—
OTIS Mock AIME 2024-202594.4%—
ProofBench56%—

Knowledge DeepSeek V4 Flash leads

DeepSeek V4 Flash: 55.4 (#48), Grok 4.20 Multi-Agent: 40.4 (#119)

BenchmarkDeepSeek V4 FlashGrok 4.20 Multi-Agent
LMArena Expert14411445
GPQA Diamond91%—
SimpleQA Verified33.6%—

Multimodal Not comparable

DeepSeek V4 Flash: —, Grok 4.20 Multi-Agent: 40.5 (#48)

BenchmarkDeepSeek V4 FlashGrok 4.20 Multi-Agent
LMArena Vision—1259

Multilingual Grok 4.20 Multi-Agent leads

DeepSeek V4 Flash: 53.0 (#72), Grok 4.20 Multi-Agent: 54.4 (#43)

BenchmarkDeepSeek V4 FlashGrok 4.20 Multi-Agent
LMArena Non-English14201440
LMArena Chinese14681475
LMArena French14391466
LMArena German14181456
LMArena Japanese14061405
LMArena Korean13841416
LMArena Russian14281457
LMArena Spanish14361447

Instruction Following Too close to call

DeepSeek V4 Flash: 74.9 (#81), Grok 4.20 Multi-Agent: 74.8 (#84)

BenchmarkDeepSeek V4 FlashGrok 4.20 Multi-Agent
LMArena Instruction Following14211420

Long Context Too close to call

DeepSeek V4 Flash: 43.8 (#85), Grok 4.20 Multi-Agent: 43.7 (#88)

BenchmarkDeepSeek V4 FlashGrok 4.20 Multi-Agent
LMArena Longer Query14341431

Writing & Preference Too close to call

DeepSeek V4 Flash: 63.8 (#61), Grok 4.20 Multi-Agent: 64.0 (#59)

BenchmarkDeepSeek V4 FlashGrok 4.20 Multi-Agent
LMArena Text14321450
LMArena Creative Writing14031436
LMArena Multi-Turn14491452
EQ-Bench Creative Writing1559—

Frequently asked questions

Is DeepSeek V4 Flash better than Grok 4.20 Multi-Agent?

DeepSeek V4 Flash is the stronger model overall, scoring 53.6 to 46.2 on the Noometry Index.

Which is cheaper, DeepSeek V4 Flash or Grok 4.20 Multi-Agent?

DeepSeek V4 Flash is cheaper. It lists at $0.15 per million input tokens and $0.60 per million output tokens; Grok 4.20 Multi-Agent lists at $1.25 and $2.50.

Is DeepSeek V4 Flash or Grok 4.20 Multi-Agent better for coding?

DeepSeek V4 Flash scores higher on coding benchmarks: 47.9 versus 43.0 in the Noometry coding category.

Which has the bigger context window?

Both accept 1M tokens.

How many benchmarks do DeepSeek V4 Flash and Grok 4.20 Multi-Agent share?

18 benchmarks have published results for both models. DeepSeek V4 Flash has 41 scored results on Noometry and Grok 4.20 Multi-Agent has 20.

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