Noometry

Model comparison

Grok 4.20 (Non-Reasoning) vs Mistral Small

Grok 4.20 (Non-Reasoning) is the stronger model overall, scoring 48.6 to 33.4 on the Noometry Index. Mistral Small costs 6.0× less per token, which makes it the better buy when Grok 4.20 (Non-Reasoning)'s lead doesn't matter for your workload.

Last verified . 24 shared benchmarks.

Grok 4.20 (Non-Reasoning) xAI

48.6

Rank #54 Confirmed

Mistral Small Mistral AI

33.4

Rank #243 Confirmed

Summary

  • They share 24 benchmarks with published results for both. Grok 4.20 (Non-Reasoning) scores higher in 9 categories and Mistral Small in 1 category; 9 gaps are clear of the uncertainty.
  • The widest gap is in reasoning, where Grok 4.20 (Non-Reasoning) leads 52.3 to 19.8.
  • The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 92.2% for Grok 4.20 (Non-Reasoning) and 5.8% for Mistral Small.
  • Mistral Small is cheaper at $0.15 / $0.60 per million input/output tokens, against $1.25 / $2.50 for Grok 4.20 (Non-Reasoning).
  • Grok 4.20 (Non-Reasoning) accepts more context: 1M tokens versus 262K.
  • Mistral Small has downloadable open weights; the other is API-only.

Side by side

Grok 4.20 (Non-Reasoning)Mistral Small
ProviderxAIMistral AI
Noometry Index48.633.4
Released2026-02-172024-02-26
WeightsProprietaryOpen
Context window1M262K
Max output30K256K
Input $ / M tokens$1.25$0.15
Output $ / M tokens$2.50$0.60
Results tracked4639

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Category by category

Coding Grok 4.20 (Non-Reasoning) leads

Grok 4.20 (Non-Reasoning): 42.1 (#112), Mistral Small: 34.0 (#247)

BenchmarkGrok 4.20 (Non-Reasoning)Mistral Small
LMArena Coding14591362
ALE-Bench1,150497.62
LMArena WebDev1375—
SciCode—26.5%
WeirdML52.3%—
BigCodeBench Instruct—36.1%
LiveBench Coding—36.2%
BigCodeBench Complete—46.6%

Agentic & Tool Use Grok 4.20 (Non-Reasoning) leads

Grok 4.20 (Non-Reasoning): 34.4 (#46), Mistral Small: 28.1 (#93)

BenchmarkGrok 4.20 (Non-Reasoning)Mistral Small
Terminal-Bench57.3%—
Berkeley Function Calling Leaderboard—37.1%
τ²-bench Banking18%—
LMArena Search1189—
Vending-Bench 24,663—

Reasoning Grok 4.20 (Non-Reasoning) leads

Grok 4.20 (Non-Reasoning): 52.3 (#32), Mistral Small: 19.8 (#250)

BenchmarkGrok 4.20 (Non-Reasoning)Mistral Small
Kagi LLM Benchmark75%37.8%
LMArena Hard Prompts14511335
DTBench90.1%70.9%
LMCA38.7%20.6%
ARC-AGI-265.1%—
NYT Connections (extended)85.4%—
ARC-AGI-189.5%—
CritPt—0%
Chess Puzzles24%—
Thematic Generalization63.8%—
LiveBench Reasoning—44.8%
LiveBench Data Analysis—53.7%
Epoch Capabilities Index151.98—
ForecastBench61.4—
LiveBench—44%

Math Grok 4.20 (Non-Reasoning) leads

Grok 4.20 (Non-Reasoning): 48.2 (#65), Mistral Small: 16.4 (#293)

BenchmarkGrok 4.20 (Non-Reasoning)Mistral Small
OTIS Mock AIME 2024-202592.2%5.8%
LMArena Math14551341
FrontierMath (Tiers 1-3)44.9%—
FrontierMath Tier 417.1%—
ProofBench14%—
LiveBench Math—39.9%
MATH Level 5—46.8%

Knowledge Grok 4.20 (Non-Reasoning) leads

Grok 4.20 (Non-Reasoning): 52.8 (#60), Mistral Small: 31.0 (#222)

BenchmarkGrok 4.20 (Non-Reasoning)Mistral Small
GPQA Diamond89.3%47.5%
LMArena Expert14391291
SimpleQA Verified30.2%—
Vectara Hallucination Rate—5.1%
MMLU—68.7%

Multimodal Too close to call

Grok 4.20 (Non-Reasoning): 33.3 (#98), Mistral Small: 33.5 (#96)

BenchmarkGrok 4.20 (Non-Reasoning)Mistral Small
LMArena Vision12631142
Blueprint-Bench 20%—
LMArena Document1416—

Multilingual Grok 4.20 (Non-Reasoning) leads

Grok 4.20 (Non-Reasoning): 54.5 (#40), Mistral Small: 45.5 (#169)

BenchmarkGrok 4.20 (Non-Reasoning)Mistral Small
LMArena Non-English14411315
LMArena Chinese14811340
LMArena French14761337
LMArena German14651340
LMArena Japanese14491275
LMArena Korean14171259
LMArena Russian14581324
LMArena Spanish14431346

Instruction Following Grok 4.20 (Non-Reasoning) leads

Grok 4.20 (Non-Reasoning): 74.8 (#83), Mistral Small: 66.4 (#209)

BenchmarkGrok 4.20 (Non-Reasoning)Mistral Small
LMArena Instruction Following14201310
LiveBench Instruction Following—63.7%

Long Context Grok 4.20 (Non-Reasoning) leads

Grok 4.20 (Non-Reasoning): 45.5 (#34), Mistral Small: 40.4 (#156)

BenchmarkGrok 4.20 (Non-Reasoning)Mistral Small
LMArena Longer Query14371327
CL-bench22.2%—
CL-bench Life11.9%—

Writing & Preference Grok 4.20 (Non-Reasoning) leads

Grok 4.20 (Non-Reasoning): 65.7 (#44), Mistral Small: 52.5 (#171)

BenchmarkGrok 4.20 (Non-Reasoning)Mistral Small
LMArena Text14511338
LMArena Creative Writing14381305
LMArena Multi-Turn14561344
EQ-Bench Creative Writing1574—
LiveBench Language—30.5%

Frequently asked questions

Is Grok 4.20 (Non-Reasoning) better than Mistral Small?

Grok 4.20 (Non-Reasoning) is the stronger model overall, scoring 48.6 to 33.4 on the Noometry Index. Mistral Small costs 6.0× less per token, which makes it the better buy when Grok 4.20 (Non-Reasoning)'s lead doesn't matter for your workload.

Which is cheaper, Grok 4.20 (Non-Reasoning) or Mistral Small?

Mistral Small is cheaper. It lists at $0.15 per million input tokens and $0.60 per million output tokens; Grok 4.20 (Non-Reasoning) lists at $1.25 and $2.50.

Is Grok 4.20 (Non-Reasoning) or Mistral Small better for coding?

Grok 4.20 (Non-Reasoning) scores higher on coding benchmarks: 42.1 versus 34.0 in the Noometry coding category.

Which has the bigger context window?

Grok 4.20 (Non-Reasoning) does, with 1M tokens against 262K.

How many benchmarks do Grok 4.20 (Non-Reasoning) and Mistral Small share?

24 benchmarks have published results for both models. Grok 4.20 (Non-Reasoning) has 46 scored results on Noometry and Mistral Small has 39.

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