Claude Fable 5.2 vs Claude Opus 5

Change models
Claude Fable 5.2AnthropicSmartest
Claude Opus 5Anthropic
IndexAll categories, out of 100.
85.6 ±3.7 best
73.8 ±1.9
GapIndex points below the top.
Top
−11.8
CoverageIndex weight that has results.
90%
100% best
SpeedOutput tokens per second.
64/s best
48/s
EloLMArena rating and rank.
—
1502
ReleasedMonth of release.
2026-11
2026-07
Input / 1MUS dollars per 1M input tokens.
$8.00
$5.00 best
Output / 1MUS dollars per 1M output tokens.
$40.00
$25.00 best
Batch output / 1MBatch price per 1M output tokens.
$20.00
$12.50 best
1K chats2K tokens in, 500 out, each.
$36.00
$22.50 best
1K documents20K tokens in, 1K out, each.
$200.00
$125.00 best
1K agent tasks200K tokens in, 20K out, each.
$2,400.00
$1,500.00 best
ContextMaximum tokens in one request.
1M
1M
AgenticMulti-step tasks with tools.
82.2 best
71.6
CodingCode writing and repair.
86.2 best
74.8
ReasoningLogic problems and puzzles.
86.5 best
75.4
MultimodalTasks with images and text.
82.0 best
72.5
KnowledgeFacts and expert knowledge.
87.1 best
73.1
MultilingualTasks in many languages.
—
63.6
InstructionTasks with strict prompt rules.
—
55.6
MathMath problems.
79.3 best
74.8

Benchmarks

47 shared
Only Claude Fable 5.2: 24Only Claude Opus 5: 103
Claude Fable 5.2
Claude Opus 5
74.3% best1 / 222
54.9%7 / 222
83.3% best13 / 217
79.3%52 / 217
93.9%14 / 217
93.9%14 / 217
35.4% best1 / 214
29.1%13 / 214
99.7% best14 / 200
98.9%22 / 200
79.1% best1 / 164
60.9%7 / 164
92.5% best3 / 131
90.4%8 / 131
97.5%5 / 126
97.5%5 / 126
93.8% best1 / 123
88.4%11 / 123
98.8% best1 / 122
97.1%6 / 122
99.0%2 / 116
99.0%2 / 116
67.7% best1 / 114
56.4%26 / 114
94.0% best1 / 91
59.9%19 / 91
Chess PuzzlesReasoning
79.0% best1 / 90
43.0%31 / 90
95.1% best1 / 90
85.6%15 / 90
46.2%19 / 90
55.3% best2 / 90
93.0% best1 / 83
79.2%7 / 83
32.1%23 / 82
47.1% best5 / 82
90.0% best1 / 80
59.0%9 / 80
74.2% best1 / 77
64.7%4 / 77