Claude Fable 5.1 vs DeepSeek V4.1 Flash 1017

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IndexAll categories, out of 100.
76.2 ±2.4 best
68.5 ±2.6
GapIndex points below the top.
Top
−7.7
CoverageIndex weight that has results.
95%
95%
SpeedOutput tokens per second.
69/s
261/s best
EloLMArena rating and rank.
1512 best
1463
ReleasedMonth of release.
2026-09
2026-10
Input / 1MUS dollars per 1M input tokens.
$10.00
$0.022 best
Output / 1MUS dollars per 1M output tokens.
$50.00
$0.40 best
Batch output / 1MBatch price per 1M output tokens.
$25.00
$0.20 best
1K chats2K tokens in, 500 out, each.
$45.00
$0.244 best
1K documents20K tokens in, 1K out, each.
$250.00
$0.84 best
1K agent tasks200K tokens in, 20K out, each.
$3,000.00
$12.40 best
ContextMaximum tokens in one request.
1M
1.05M best
AgenticMulti-step tasks with tools.
71.1
72.2 best
CodingCode writing and repair.
77.7 best
69.8
ReasoningLogic problems and puzzles.
75.8 best
65.0
MultimodalTasks with images and text.
77.9 best
62.2
KnowledgeFacts and expert knowledge.
77.2 best
64.2
MultilingualTasks in many languages.
—
—
InstructionTasks with strict prompt rules.
74.3 best
68.3
MathMath problems.
77.0 best
65.4

Benchmarks

70 shared
Only Claude Fable 5.1: 62Only DeepSeek V4.1 Flash 1017: 24
Claude Fable 5.1
DeepSeek V4.1 Flash 1017
59.1% best3 / 222
39.2%51 / 222
85.3% best5 / 217
84.0%8 / 217
29.7% best12 / 214
14.3%52 / 214
100.0% best1 / 200
98.3%28 / 200
68.4% best2 / 164
46.4%33 / 164
88.5% best2 / 149
83.3%56 / 149
62.7% best6 / 133
55.0%21 / 133
90.0% best9 / 131
72.9%25 / 131
97.5% best5 / 126
94.5%21 / 126
90.3% best6 / 123
84.7%18 / 123
98.3% best2 / 122
81.7%23 / 122
99.0% best2 / 116
98.0%11 / 116
63.1% best3 / 114
51.9%44 / 114
MedScribeHealthcare
91.3% best2 / 109
85.5%27 / 109
MedCodeHealthcare
53.5% best8 / 106
41.2%56 / 106
70.8% best8 / 91
42.9%47 / 91
Chess PuzzlesReasoning
48.0%19 / 90
48.0%19 / 90
90.2% best7 / 90
67.4%33 / 90
55.3% best2 / 90
41.3%30 / 90
50.7% best2 / 82
26.6%41 / 82