Claude Fable 5.1 vs Claude Fable 5.2
Change modelsClaude Fable 5.1Anthropic
IndexAll categories, out of 100.
76.2 ±2.4
85.6 ±3.7 best
GapIndex points below the top.
−9.4
Top
CoverageIndex weight that has results.
95% best
90%
SpeedOutput tokens per second.
69/s best
64/s
EloLMArena rating and rank.
1512
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ReleasedMonth of release.
2026-09
2026-11
Input / 1MUS dollars per 1M input tokens.
$10.00
$8.00 best
Output / 1MUS dollars per 1M output tokens.
$50.00
$40.00 best
Batch output / 1MBatch price per 1M output tokens.
$25.00
$20.00 best
1K chats2K tokens in, 500 out, each.
$45.00
$36.00 best
1K documents20K tokens in, 1K out, each.
$250.00
$200.00 best
1K agent tasks200K tokens in, 20K out, each.
$3,000.00
$2,400.00 best
ContextMaximum tokens in one request.
1M
1M
AgenticMulti-step tasks with tools.
71.1
82.2 best
CodingCode writing and repair.
77.7
86.2 best
ReasoningLogic problems and puzzles.
75.8
86.5 best
MultimodalTasks with images and text.
77.9
82.0 best
KnowledgeFacts and expert knowledge.
77.2
87.1 best
MultilingualTasks in many languages.
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InstructionTasks with strict prompt rules.
74.3
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MathMath problems.
77.0
79.3 best
Benchmarks
66 sharedOnly Claude Fable 5.1: 66Only Claude Fable 5.2: 5
Claude Fable 5.1
Claude Fable 5.2