Claude Fable 5.1 vs Claude Opus 5
Change modelsClaude Fable 5.1Anthropic
Claude Opus 5Anthropic
IndexAll categories, out of 100.
76.2 ±2.4 best
73.8 ±1.9
GapIndex points below the top.
Top
−2.4 · no clear gap
CoverageIndex weight that has results.
95%
100% best
SpeedOutput tokens per second.
69/s best
48/s
EloLMArena rating and rank.
1512 best
1502
ReleasedMonth of release.
2026-09
2026-07
Input / 1MUS dollars per 1M input tokens.
$10.00
$5.00 best
Output / 1MUS dollars per 1M output tokens.
$50.00
$25.00 best
Batch output / 1MBatch price per 1M output tokens.
$25.00
$12.50 best
1K chats2K tokens in, 500 out, each.
$45.00
$22.50 best
1K documents20K tokens in, 1K out, each.
$250.00
$125.00 best
1K agent tasks200K tokens in, 20K out, each.
$3,000.00
$1,500.00 best
ContextMaximum tokens in one request.
1M
1M
AgenticMulti-step tasks with tools.
71.1
71.6 best
CodingCode writing and repair.
77.7 best
74.8
ReasoningLogic problems and puzzles.
75.8 best
75.4
MultimodalTasks with images and text.
77.9 best
72.5
KnowledgeFacts and expert knowledge.
77.2 best
73.1
MultilingualTasks in many languages.
—
63.6
InstructionTasks with strict prompt rules.
74.3 best
55.6
MathMath problems.
77.0 best
74.8
Benchmarks
102 sharedOnly Claude Fable 5.1: 30Only Claude Opus 5: 48
Claude Fable 5.1
Claude Opus 5