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Benchmark

Claude Opus 5.5 (Max)

  • Anthropic
  • Release · September 22, 2026
  • Proprietary
  • Reasoning

Intelligence

Intelligence Index

#1 of 266
  1. 57.658Claude Opus 5.5 (Max)
  2. 5656Claude Opus 5.5 (Xhigh)
  3. 5656Claude Sonnet 5.5 (Max)
  4. 55.856Muse Wonder Full (Max)
  5. 55.155Kimi K3.1 Pro
  6. 53.654Claude Opus 5.5 (High)
  7. 53.453Claude Fable 5.1 (Max)
  8. 53.253Claude Fable 5.1 (Xhigh)
  9. 52.753GPT-6 Astra (Max)
  10. 52.653Gemini 4 Argon (High)
Data from Artificial Analysis

Evaluations

  • AA-Briefcase1,801#2
  • AA-Omniscience Accuracy66.2%#2
  • AA-Omniscience Non-Hallucination41.4%#22
  • AutomationBench-AA69.5%#6
  • GDPval-AA1,866#1
  • Humanity's Last Exam61.4%#1
  • GDP.pdf26.2%#6
  • Terminal-Bench 4.059.6%#3
  • AA-LCR84.7%#5
  • SciCode66.9%#1
  • CritPt31.7%#2
  • Terminal-Bench-Science59.1%#2
  • FrontierCode52.2%#1
  • AA-AnalystAgent56.3%#3
  • Harvey LAB-AA4.2%#7
  • AA-3D1,196#2
  • ITBench-AA38.2%#9
  • MLCR-AA27.8%#5
  • MMMU-Pro87.7%#1
  • PersonalityBench: Expressiveness89.8#4
  • PersonalityBench: Organization77.2#10
  • PersonalityBench: Transparency89.8#5
  • PersonalityBench: Slop18.8#20
  • PersonalityBench: Informativeness92.4#3
  • PersonalityBench: Warmth82.2#6
  • PersonalityBench: Conviction69.5#8
  • PersonalityBench: Imagination94.9#2
Claude Opus 5.5 (Max)Median
Data from Artificial Analysis

Cost per task

Cost per task

$ per Intelligence Index task · #23 of 24
  1. $1.991.99Gemini 4 Argon (High)
  2. $2.012.01GLM-5.3 (Max)
  3. $2.112.11Kimi K3.1 Pro
  4. $3.263.26GPT-6 Astra (Max)
  5. $3.743.74Grok 4.7 (Xhigh)
  6. $4.544.54Muse Wonder (Max)
  7. $5.415.41Qwen3.8 Max (0902)
  8. $5.465.46Claude Sonnet 5.5 (Max)
  9. $5.985.98Claude Opus 5.5 (Max)
  10. $7.637.63Claude Fable 5.1 (Max)
Data from Artificial Analysis

Time per task

seconds per task · #19 of 26
  1. 578578Mistral Large 4 Preview
  2. 604604GLM-5.3 (Max)
  3. 628628GPT-6.1 Sol (Max)
  4. 723723Gemini 4 Argon (High)
  5. 736736Claude Fable 5.1 (Max)
  6. 791791Claude Opus 5.5 (Max)
  7. 824824GLM-5.3-Flash
  8. 846846Kimi K3.1 Pro
  9. 901901Grok 4.7 (Xhigh)
  10. 936936Claude Sonnet 5.5 (Max)
Data from Artificial Analysis

Tokens per task

output tokens per task · #25 of 27
  1. 71K71KGemini 3.8 Flash (High)
  2. 71.1K71KGLM-5.3 (Max)
  3. 78.1K78KClaude Fable 5.1 (Max)
  4. 78.6K79KMiniMax-M3.1-Flash
  5. 80.6K81KGrok 4.7 (Xhigh)
  6. 89.5K90KDeepSeek V4.1 Flash 1017 (Max)
  7. 107.7K108KQwen3.8 Max (0902)
  8. 119.2K119KClaude Opus 5.5 (Max)
  9. 162.2K162KClaude Haiku 5.5 (Max)
  10. 197.4K197KClaude Sonnet 5.5 (Max)
Data from Artificial Analysis

Speed and price

Speed

tokens per second · #94 of 162
  1. 103103Qwen3 Omni 30B A3B (Reasoning)
  2. 100100DeepSeek V4 Pro 0813 (Non-reasoning)
  3. 9999GPT-5.3 Codex (Xhigh)
  4. 9898GLM-5.3 (Max)
  5. 9696Qwen3 Omni 30B A3B Instruct
  6. 9696Claude Opus 5.5 (Max)
  7. 9494Qwen3 Coder Next
  8. 9393Grok 4.7 (Xhigh)
  9. 9292GPT-6 Luna (Medium)
  10. 9191GLM-5.3 (Low)
Data from Artificial Analysis

Latency

seconds to first token · #162 of 162
  1. 102.7103GPT-5.6 Terra (Max)
  2. 106.6107GPT-6.1 Sol (Xhigh)
  3. 109.6110Claude Opus 5.5 (Xhigh)
  4. 161.5162GPT-6 Astra (Xhigh)
  5. 180.5181Claude Fable 5.1 (Max)
  6. 236236GPT-6.1 Sol (Max)
  7. 278.3278GPT-6 Astra (Max)
  8. 322.2322Claude Haiku 5.5 (Max)
  9. 371.6372Claude Sonnet 5.5 (Max)
  10. 652.6653Claude Opus 5.5 (Max)
Data from Artificial Analysis

Price

$ per 1M tokens (3:1) · #153 of 169
  1. $4.54.5GPT-5.6 Terra (Medium)
  2. $4.54.5Gemini 3.1 Pro Preview
  3. $4.54.5GPT-5.6 Terra (Low)
  4. $4.54.5GPT-5.6 Terra (Non-reasoning)
  5. $4.814.81GPT-5.3 Codex (Xhigh)
  6. $88Claude Opus 5.5 (Max)
  7. $88Claude Opus 5.5 (Xhigh)
  8. $88Claude Opus 5.5 (High)
  9. $88Muse Wonder (Max)
  10. $88Claude Opus 5.5 (Medium)
Data from Artificial Analysis

Nearby models

  • Claude Opus 5.5 (Xhigh)Anthropic56
  • Claude Sonnet 5.5 (Max)Anthropic56
  • Muse Wonder Full (Max)Meta55.8
  • Kimi K3.1 ProKimi55.1
  • Claude Opus 5.5 (High)Anthropic53.6
  • Claude Fable 5.1 (Max)Anthropic53.4
  • Claude Fable 5.1 (Xhigh)Anthropic53.2
  • GPT-6 Astra (Max)OpenAI52.7
Data from Artificial Analysis

Same lab

  • Claude Sonnet 5.5 (Xhigh)Anthropic51.9
  • Claude Opus 5.5 (Medium)Anthropic51.2
  • Claude Fable 5.1 (High)Anthropic51.2
  • Claude Fable 5.1 (Medium)Anthropic48.9
  • Claude Sonnet 5.5 (High)Anthropic46.8
  • Claude Fable 5.1 (Low)Anthropic46.8
  • Claude Haiku 5.5 (Max)Anthropic43.4
  • Claude Opus 5.5 (Low)Anthropic42.3
Data from Artificial Analysis
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