Claude Opus 5.5 vs Muse Spark 1.3

Change models
IndexAll categories, out of 100.
78.6 ±2.4 best
70.1 ±4.0
GapIndex points below the top.
Top
−8.5
CoverageIndex weight that has results.
95% best
85%
SpeedOutput tokens per second.
76/s
76/s
EloLMArena rating and rank.
1513 best
1491
ReleasedMonth of release.
2026-09
2026-09
Input / 1MUS dollars per 1M input tokens.
$4.00
$1.25 best
Output / 1MUS dollars per 1M output tokens.
$20.00
$4.25 best
Batch output / 1MBatch price per 1M output tokens.
$10.00
—
1K chats2K tokens in, 500 out, each.
$18.00
$4.63 best
1K documents20K tokens in, 1K out, each.
$100.00
$29.25 best
1K agent tasks200K tokens in, 20K out, each.
$1,200.00
$335.00 best
ContextMaximum tokens in one request.
1M
1.05M best
AgenticMulti-step tasks with tools.
74.1 best
70.4
CodingCode writing and repair.
81.8 best
68.8
ReasoningLogic problems and puzzles.
80.8 best
68.1
MultimodalTasks with images and text.
74.1
—
KnowledgeFacts and expert knowledge.
79.2 best
67.5
MultilingualTasks in many languages.
—
—
InstructionTasks with strict prompt rules.
59.6
84.4 best
MathMath problems.
77.7 best
68.6

Benchmarks

50 shared
Only Claude Opus 5.5: 107Only Muse Spark 1.3: 9
Claude Opus 5.5
Muse Spark 1.3
61.4% best2 / 222
48.7%15 / 222
84.7% best6 / 217
83.0%18 / 217
31.7% best4 / 214
24.9%21 / 214
100.0% best1 / 200
99.2%19 / 200
65.5% best3 / 164
43.6%41 / 164
68.3% best1 / 133
59.0%10 / 133
90.3% best6 / 123
82.9%23 / 123
66.9% best2 / 114
58.8%14 / 114
Chess PuzzlesReasoning
67.0% best5 / 90
37.0%39 / 90
91.2% best4 / 90
74.0%25 / 90
50.5% best7 / 90
40.9%33 / 90
44.5% best6 / 82
37.9%14 / 82
80.3% best9 / 80
79.6%13 / 80
92.2% best4 / 80
89.7%15 / 80
71.0% best6 / 80
25.0%37 / 80
58.6%10 / 79
58.9% best8 / 79
66.6% best4 / 77
27.6%44 / 77
EMBFinance
75.9% best2 / 75
62.7%31 / 75
87.6% best1 / 75
72.3%24 / 75
95.0% best5 / 72
46.3%24 / 72