Claude Fable 5.2 vs GPT-5.5 Pro
Change models
GPT-5.5 ProOpenAI
IndexAll categories, out of 100.
85.6 ±3.7 best
74.8 ±8.7
GapIndex points below the top.
Top
−10.8
CoverageIndex weight that has results.
90% best
60%
SpeedOutput tokens per second.
64/s best
19/s
EloLMArena rating and rank.
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ReleasedMonth of release.
2026-11
2026-04
Input / 1MUS dollars per 1M input tokens.
$8.00 best
$30.00
Output / 1MUS dollars per 1M output tokens.
$40.00 best
$180.00
Batch output / 1MBatch price per 1M output tokens.
$20.00 best
$90.00
1K chats2K tokens in, 500 out, each.
$36.00 best
$150.00
1K documents20K tokens in, 1K out, each.
$200.00 best
$780.00
1K agent tasks200K tokens in, 20K out, each.
$2,400.00 best
$9,600.00
ContextMaximum tokens in one request.
1M
1.05M best
AgenticMulti-step tasks with tools.
82.2 best
71.1
CodingCode writing and repair.
86.2
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ReasoningLogic problems and puzzles.
86.5 best
81.1
MultimodalTasks with images and text.
82.0
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KnowledgeFacts and expert knowledge.
87.1 best
69.0
MultilingualTasks in many languages.
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InstructionTasks with strict prompt rules.
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MathMath problems.
79.3 best
76.3
Benchmarks
12 sharedOnly Claude Fable 5.2: 59Only GPT-5.5 Pro: 3
Claude Fable 5.2
GPT-5.5 Pro