Claude Opus 4.1 vs Grok 4.1 Fast (Reasoning)

Change models
IndexAll categories, out of 100.
47.5 ±5.0 best
47.3 ±3.9
GapIndex points below the top.
Top
−0.2 · no clear gap
CoverageIndex weight that has results.
90%
100% best
SpeedOutput tokens per second.
12/s
—
EloLMArena rating and rank.
1419 best
1408
ReleasedMonth of release.
2025-08
2025-11
Input / 1MUS dollars per 1M input tokens.
$15.00
—
Output / 1MUS dollars per 1M output tokens.
$75.00
—
Batch output / 1MBatch price per 1M output tokens.
$37.50
—
1K chats2K tokens in, 500 out, each.
$67.50
—
1K documents20K tokens in, 1K out, each.
$375.00
—
1K agent tasks200K tokens in, 20K out, each.
$4,500.00
—
ContextMaximum tokens in one request.
200K
2M best
AgenticMulti-step tasks with tools.
48.7 best
48.4
CodingCode writing and repair.
48.2 best
43.3
ReasoningLogic problems and puzzles.
55.5 best
50.3
MultimodalTasks with images and text.
51.1 best
43.6
KnowledgeFacts and expert knowledge.
49.4 best
48.1
MultilingualTasks in many languages.
—
59.5
InstructionTasks with strict prompt rules.
—
38.3
MathMath problems.
42.0
55.7 best

Benchmarks

13 shared
Only Claude Opus 4.1: 13Only Grok 4.1 Fast (Reasoning): 28
Claude Opus 4.1
Grok 4.1 Fast (Reasoning)
83.5% best54 / 149
82.5%69 / 149
TaxEval v2Finance
71.5%78 / 143
73.1% best52 / 143
64.6%101 / 142
80.6% best66 / 142
70.0%94 / 135
84.3% best51 / 135
MMLU ProKnowledge
87.2% best32 / 135
84.2%64 / 135
MedScribeHealthcare
71.8%92 / 109
78.7% best64 / 109
MedCodeHealthcare
41.4% best53 / 106
28.1%100 / 106
61.1% best63 / 97
42.6%89 / 97
AIMEMath
44.2%65 / 95
91.9% best21 / 95
MedQAHealthcare
92.5% best30 / 95
92.1%35 / 95
MMMU ProMultimodal
73.7% best58 / 92
72.7%62 / 92
MGSMMultilingual
94.2% best5 / 74
89.5%45 / 74
IOI v1Coding
12.5% best32 / 61
3.1%52 / 61