Noometry

Model comparison

Grok 4.1 Fast vs Nova Premier 1.0

Grok 4.1 Fast is the stronger model overall, scoring 40.9 to 37.7 on the Noometry Index.

Last verified . 0 shared benchmarks.

Grok 4.1 Fast xAI

40.9

Rank #131 Confirmed

Nova Premier 1.0 Amazon

37.7

Rank #185 Confirmed

Summary

  • The widest gap is in reasoning, where Grok 4.1 Fast leads 42.3 to 22.3.
  • Grok 4.1 Fast is cheaper at $0.20 / $0.50 per million input/output tokens, against $2.50 / $12.50 for Nova Premier 1.0.
  • Nova Premier 1.0 accepts more context: 1M tokens versus 128K.

Side by side

Grok 4.1 FastNova Premier 1.0
ProviderxAIAmazon
Noometry Index40.937.7
Released2025-06-272025-04-30
WeightsProprietaryProprietary
Context window128K1M
Max output30K10K
Input $ / M tokens$0.20$2.50
Output $ / M tokens$0.50$12.50
Results tracked326

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Category by category

Coding Not comparable

Grok 4.1 Fast: 33.8 (#236), Nova Premier 1.0: —

BenchmarkGrok 4.1 FastNova Premier 1.0
LMArena WebDev1241—
LMArena Coding1411—
ALE-Bench394.93—

Agentic & Tool Use Not comparable

Grok 4.1 Fast: 36.1 (#35), Nova Premier 1.0: —

BenchmarkGrok 4.1 FastNova Premier 1.0
Berkeley Function Calling Leaderboard69.6%—
τ²-bench Banking13.1%—
LMArena Search1171—
Vending-Bench 21,107—

Reasoning Grok 4.1 Fast leads

Grok 4.1 Fast: 42.3 (#45), Nova Premier 1.0: 22.3 (#182)

BenchmarkGrok 4.1 FastNova Premier 1.0
SimpleBench56%—
Kagi LLM Benchmark—44.8%
NYT Connections (extended)87.4%—
LMArena Hard Prompts1407—
DTBench87.7%—
ForecastBench61—

Math Too close to call

Grok 4.1 Fast: 30.9 (#201), Nova Premier 1.0: 31.5 (#194)

BenchmarkGrok 4.1 FastNova Premier 1.0
MathArena Final-Answer Competitions60.9%—
ProofBench4%—
Omni-MATH—35%
LMArena Math1408—

Knowledge Nova Premier 1.0 leads

Grok 4.1 Fast: 32.6 (#203), Nova Premier 1.0: 35.4 (#176)

BenchmarkGrok 4.1 FastNova Premier 1.0
MMLU-Pro—72.6%
Vectara Hallucination Rate17.8%—
GPQA (HELM)—51.8%
LMArena Expert1398—

Multimodal Not comparable

Grok 4.1 Fast: 36.3 (#71), Nova Premier 1.0: —

BenchmarkGrok 4.1 FastNova Premier 1.0
LMArena Vision1201—

Multilingual Not comparable

Grok 4.1 Fast: 51.1 (#110), Nova Premier 1.0: —

BenchmarkGrok 4.1 FastNova Premier 1.0
LMArena Non-English1391—
LMArena Chinese1441—
LMArena French1416—
LMArena German1404—
LMArena Japanese1347—
LMArena Korean1361—
LMArena Russian1387—
LMArena Spanish1411—

Instruction Following Grok 4.1 Fast leads

Grok 4.1 Fast: 72.8 (#127), Nova Premier 1.0: 66.9 (#201)

BenchmarkGrok 4.1 FastNova Premier 1.0
IFEval—80.3%
LMArena Instruction Following1376—

Long Context Not comparable

Grok 4.1 Fast: 42.4 (#121), Nova Premier 1.0: —

BenchmarkGrok 4.1 FastNova Premier 1.0
LMArena Longer Query1390—

Writing & Preference Grok 4.1 Fast leads

Grok 4.1 Fast: 57.4 (#126), Nova Premier 1.0: 51.0 (#174)

BenchmarkGrok 4.1 FastNova Premier 1.0
LMArena Text1408—
LMArena Creative Writing1394—
EQ-Bench Creative Writing1327—
WildBench—78.8%
LMArena Multi-Turn1389—

Frequently asked questions

Is Grok 4.1 Fast better than Nova Premier 1.0?

Grok 4.1 Fast is the stronger model overall, scoring 40.9 to 37.7 on the Noometry Index.

Which is cheaper, Grok 4.1 Fast or Nova Premier 1.0?

Grok 4.1 Fast is cheaper. It lists at $0.20 per million input tokens and $0.50 per million output tokens; Nova Premier 1.0 lists at $2.50 and $12.50.

Which has the bigger context window?

Nova Premier 1.0 does, with 1M tokens against 128K.

How many benchmarks do Grok 4.1 Fast and Nova Premier 1.0 share?

0 benchmarks have published results for both models. Grok 4.1 Fast has 32 scored results on Noometry and Nova Premier 1.0 has 6.

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