Claude Fable 5.2 vs GPT-6 Sol

Change models
Claude Fable 5.2AnthropicSmartest
GPT-6 SolOpenAI
IndexAll categories, out of 100.
85.6 ±3.7 best
72.8 ±2.2
GapIndex points below the top.
Top
−12.8
CoverageIndex weight that has results.
90%
100% best
SpeedOutput tokens per second.
64/s best
61/s
EloLMArena rating and rank.
—
1397
ReleasedMonth of release.
2026-11
2026-09
Input / 1MUS dollars per 1M input tokens.
$8.00
$2.00 best
Output / 1MUS dollars per 1M output tokens.
$40.00
$10.00 best
Batch output / 1MBatch price per 1M output tokens.
$20.00
$5.00 best
1K chats2K tokens in, 500 out, each.
$36.00
$9.00 best
1K documents20K tokens in, 1K out, each.
$200.00
$50.00 best
1K agent tasks200K tokens in, 20K out, each.
$2,400.00
$600.00 best
ContextMaximum tokens in one request.
1M
1.05M best
AgenticMulti-step tasks with tools.
82.2 best
68.6
CodingCode writing and repair.
86.2 best
73.9
ReasoningLogic problems and puzzles.
86.5 best
76.1
MultimodalTasks with images and text.
82.0 best
70.1
KnowledgeFacts and expert knowledge.
87.1 best
71.9
MultilingualTasks in many languages.
—
65.5
InstructionTasks with strict prompt rules.
—
65.3
MathMath problems.
79.3 best
75.8

Benchmarks

38 shared
Only Claude Fable 5.2: 33Only GPT-6 Sol: 56
Claude Fable 5.2
GPT-6 Sol
74.3% best1 / 222
47.9%18 / 222
83.3%13 / 217
83.7% best10 / 217
93.9%14 / 217
94.3% best10 / 217
35.4% best1 / 214
30.9%8 / 214
99.7%14 / 200
100.0% best1 / 200
79.1% best1 / 164
54.5%13 / 164
92.5% best3 / 131
89.6%10 / 131
97.5% best5 / 126
95.5%17 / 126
93.8% best1 / 123
87.8%12 / 123
98.8% best1 / 122
90.0%17 / 122
99.0% best2 / 116
97.8%14 / 116
67.7% best1 / 114
57.6%18 / 114
94.0% best1 / 91
60.7%17 / 91
Chess PuzzlesReasoning
79.0% best1 / 90
56.0%15 / 90
95.1% best1 / 90
89.8%8 / 90
46.2% best19 / 90
28.8%57 / 90
32.1% best23 / 82
15.0%62 / 82
90.0% best1 / 80
56.0%12 / 80
100.0% best1 / 72
90.0%8 / 72
19.0% best1 / 65
2.0%11 / 65