supermarket

Language

Grok 4.1 Fast

By SpaceXAI (xAI), in the Grok family.

Released
19 Nov 2025
Status
Retired
Retired
15 May 2026
Context
2M
Max output
30K
Input per 1M tokens
$0.20
Output per 1M tokens
$0.50
Open weights
No
License
proprietary
Parameters
—
Knowledge cutoff
—
Reasoning
Yes
Modalities
text, image → text

Category scores

Out of 100, from independent and third-party results only, by method category-2026-09-29.1.

Category scores
CategoryScoreRankCoverage
Knowledge & reasoning47.2Not ranked1 of 4
Human preference41.5Not ranked2 of 5

Benchmark results

Every result we hold for this model, with who ran it and where it was published.

Knowledge & reasoning

Knowledge & reasoning results
BenchmarkMetricValueProvenanceSettingEvaluatedSource
DTBench (Decision Theory Benchmark)Accuracy (capability questions)87.7%Third party——https://conceptualreasoning.ai/dtbench via Epoch AI
SimpleBenchScore (AVG@5)56.0%Third party——SimpleBench Leaderboard via Epoch AI
SimpleBenchScore (AVG@5)56.0%Third party——SimpleBench Leaderboard via Epoch AI

Human preference

Human preference results
BenchmarkMetricValueProvenanceSettingEvaluatedSource
Code Arena: WebDev (arena.ai)Arena score (Elo scale)1242Independentreasoning25 Sep 2026Arena
Code Arena: WebDev (arena.ai)Votes5490Independentreasoning25 Sep 2026Arena
Text Arena (arena.ai)Arena score (Elo scale)1430Independentreasoning25 Sep 2026Arena
Text Arena (arena.ai)Votes57452Independentreasoning25 Sep 2026Arena
Vision Arena (arena.ai)Arena score (Elo scale)1196Independentreasoning28 Sep 2026Arena
Vision Arena (arena.ai)Votes13401Independentreasoning28 Sep 2026Arena

Other Grok versions

Sources

Grok 4.1 Fast: benchmarks, price and specs · supermarket.dev