Noometry

Model comparison

Grok 4.6 vs Reka Flash 3

Grok 4.6 has enough public results to be ranked (#21); Reka Flash 3 does not yet, so treat this comparison as directional.

Last verified . 0 shared benchmarks.

Grok 4.6 xAI

56.9

Rank #21 Confirmed

Reka Flash 3 Reka

36.8

Unranked Sparse

Summary

  • The widest gap is in writing & preference, where Grok 4.6 leads 62.3 to 43.7.
  • Reka Flash 3 is cheaper at $0.10 / $0.20 per million input/output tokens, against $2 / $6 for Grok 4.6.
  • Grok 4.6 accepts more context: 500K tokens versus 66K.
  • Reka Flash 3 has downloadable open weights; the other is API-only.

Side by side

Grok 4.6Reka Flash 3
ProviderxAIReka
Noometry Index56.936.8
Released2026-08-122025-03-10
WeightsProprietaryOpen
Context window500K66K
Max output500K59K
Input $ / M tokens$2$0.10
Output $ / M tokens$6$0.20
Results tracked492

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Category by category

Coding Not comparable

Grok 4.6: 58.5 (#16), Reka Flash 3: —

BenchmarkGrok 4.6Reka Flash 3
DeepSWE67.5%—
FrontierCode48%—
CursorBench41.4%—
LMArena WebDev1617—
FrontierSWE25.3%—
SciCode56.5%—
WeirdML67.3%—
LMArena Coding1465—
ALE-Bench1,508—

Agentic & Tool Use Grok 4.6 leads

Grok 4.6: 39.4 (#27), Reka Flash 3: 30.4

BenchmarkGrok 4.6Reka Flash 3
APEX-Agents65.3%—
BALROG—29.2%
GDP.pdf17.2%—
Vending-Bench 29,047—

Reasoning Not comparable

Grok 4.6: 61.4 (#20), Reka Flash 3: —

BenchmarkGrok 4.6Reka Flash 3
ARC-AGI-267.1%—
SimpleBench75.9%—
NYT Connections (extended)80%—
ARC-AGI-187.5%—
CritPt19.7%—
Chess Puzzles40%—
EBR-Bench30.5%—
LMArena Hard Prompts1447—
Mystery Game Puzzles34%—
DTBench97.3%—
LMCA48.5%—
Epoch Capabilities Index156.44—

Math Not comparable

Grok 4.6: 67.0 (#24), Reka Flash 3: —

BenchmarkGrok 4.6Reka Flash 3
FrontierMath (Tiers 1-3)66%—
FrontierMath Tier 431.7%—
OTIS Mock AIME 2024-202599.2%—
ProofBench51%—
LMArena Math1423—

Knowledge Not comparable

Grok 4.6: 63.3 (#20), Reka Flash 3: —

BenchmarkGrok 4.6Reka Flash 3
GPQA Diamond94%—
SimpleQA Verified49.3%—
LMArena Expert1467—

Multimodal Not comparable

Grok 4.6: 43.6 (#23), Reka Flash 3: —

BenchmarkGrok 4.6Reka Flash 3
LMArena Vision1263—
Blueprint-Bench 233.2%—
Furniture Assembly40%—
LMArena Document1452—

Multilingual Not comparable

Grok 4.6: 53.0 (#74), Reka Flash 3: —

BenchmarkGrok 4.6Reka Flash 3
LMArena Non-English1420—
LMArena Chinese1480—
LMArena French1461—
LMArena German1431—
LMArena Japanese1376—
LMArena Korean1397—
LMArena Russian1422—
LMArena Spanish1404—

Instruction Following Not comparable

Grok 4.6: 75.4 (#63), Reka Flash 3: —

BenchmarkGrok 4.6Reka Flash 3
LMArena Instruction Following1431—

Long Context Not comparable

Grok 4.6: 44.5 (#66), Reka Flash 3: —

BenchmarkGrok 4.6Reka Flash 3
LMArena Longer Query1454—

Writing & Preference Grok 4.6 leads

Grok 4.6: 62.3 (#80), Reka Flash 3: 43.7

BenchmarkGrok 4.6Reka Flash 3
LMArena Text1428—
LMArena Creative Writing1428—
EQ-Bench Creative Writing—1228
LMArena Multi-Turn1425—

Frequently asked questions

Is Grok 4.6 better than Reka Flash 3?

Grok 4.6 has enough public results to be ranked (#21); Reka Flash 3 does not yet, so treat this comparison as directional.

Which is cheaper, Grok 4.6 or Reka Flash 3?

Reka Flash 3 is cheaper. It lists at $0.10 per million input tokens and $0.20 per million output tokens; Grok 4.6 lists at $2 and $6.

Which has the bigger context window?

Grok 4.6 does, with 500K tokens against 66K.

How many benchmarks do Grok 4.6 and Reka Flash 3 share?

0 benchmarks have published results for both models. Grok 4.6 has 49 scored results on Noometry and Reka Flash 3 has 2.

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