Claude Fable 5 vs Claude Fable 5.1
Change modelsClaude Fable 5Anthropic
Claude Fable 5.1Anthropic
IndexAll categories, out of 100.
74.0 ±2.7
76.2 ±2.4 best
GapIndex points below the top.
−2.2 · no clear gap
Top
CoverageIndex weight that has results.
95%
95%
SpeedOutput tokens per second.
56/s
69/s best
EloLMArena rating and rank.
1492
1512 best
ReleasedMonth of release.
2026-06
2026-09
Input / 1MUS dollars per 1M input tokens.
$10.00
$10.00
Output / 1MUS dollars per 1M output tokens.
$50.00
$50.00
Batch output / 1MBatch price per 1M output tokens.
$25.00
$25.00
1K chats2K tokens in, 500 out, each.
$45.00
$45.00
1K documents20K tokens in, 1K out, each.
$250.00
$250.00
1K agent tasks200K tokens in, 20K out, each.
$3,000.00
$3,000.00
ContextMaximum tokens in one request.
1M
1M
AgenticMulti-step tasks with tools.
71.4 best
71.1
CodingCode writing and repair.
74.7
77.7 best
ReasoningLogic problems and puzzles.
73.6
75.8 best
MultimodalTasks with images and text.
70.1
77.9 best
KnowledgeFacts and expert knowledge.
75.8
77.2 best
MultilingualTasks in many languages.
—
—
InstructionTasks with strict prompt rules.
64.1
74.3 best
MathMath problems.
76.2
77.0 best
Benchmarks
70 sharedOnly Claude Fable 5: 22Only Claude Fable 5.1: 62
Claude Fable 5
Claude Fable 5.1