Claude Opus 4 vs Claude Haiku 4.5 Thinking

Change models
Claude Opus 4Anthropic
IndexAll categories, out of 100.
43.9 ±5.3 best
43.5 ±7.0
GapIndex points below the top.
Top
−0.4 · no clear gap
CoverageIndex weight that has results.
90% best
75%
SpeedOutput tokens per second.
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EloLMArena rating and rank.
1366
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ReleasedMonth of release.
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2025-10
Input / 1MUS dollars per 1M input tokens.
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Output / 1MUS dollars per 1M output tokens.
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1K chats2K tokens in, 500 out, each.
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1K documents20K tokens in, 1K out, each.
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1K agent tasks200K tokens in, 20K out, each.
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ContextMaximum tokens in one request.
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200K
AgenticMulti-step tasks with tools.
49.6
50.2 best
CodingCode writing and repair.
47.3 best
42.5
ReasoningLogic problems and puzzles.
38.6
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MultimodalTasks with images and text.
50.6 best
30.1
KnowledgeFacts and expert knowledge.
48.2 best
43.6
MultilingualTasks in many languages.
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InstructionTasks with strict prompt rules.
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MathMath problems.
39.4
51.6 best

Benchmarks

10 shared
Only Claude Opus 4: 15Only Claude Haiku 4.5 Thinking: 18
Claude Opus 4
Claude Haiku 4.5 Thinking
83.1% best58 / 149
81.2%82 / 149
TaxEval v2Finance
71.9% best70 / 143
67.5%106 / 143
62.6% best103 / 142
41.2%129 / 142
71.7%90 / 135
72.2% best88 / 135
MMLU ProKnowledge
86.2% best45 / 135
78.7%100 / 135
58.6%69 / 97
62.2% best56 / 97
AIMEMath
41.3%69 / 95
82.7% best44 / 95
MedQAHealthcare
92.9% best27 / 95
79.6%74 / 95
MMMU ProMultimodal
73.3% best60 / 92
46.1%90 / 92
MGSMMultilingual
93.8% best8 / 74
92.1%21 / 74