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Benchmark

Claude Opus 5.5 (Xhigh)

  • Anthropic
  • Proprietary
  • Reasoning

Intelligence

Intelligence Index

#2 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-Omniscience Accuracy65.4%#4
  • Humanity's Last Exam57.5%#4
  • Terminal-Bench 4.059.6%#3
  • AA-LCR84.7%#5
  • SciCode65.1%#2
  • CritPt31.7%#2
  • MMMU-Pro86.6%#3
Claude Opus 5.5 (Xhigh)Median
Data from Artificial Analysis

Speed and price

Speed

tokens per second · #104 of 162
  1. 9191Gemma 4 26B A4B (Reasoning)
  2. 8989Llama 3.3 Instruct 70B
  3. 8888Reka Flash 3
  4. 8686Grok 4.7 (High)
  5. 8383Claude Opus 5.5 (Medium)
  6. 8282Claude Opus 5.5 (Xhigh)
  7. 8282Claude Opus 5.5 (Low)
  8. 8181Gemini 4 Argon (High)
  9. 8181Hy3
  10. 8080Claude Opus 5.5 (High)
Data from Artificial Analysis

Latency

seconds to first token · #155 of 162
  1. 59.560Claude Haiku 5.5 (Xhigh)
  2. 74.575Claude Fable 5.1 (Xhigh)
  3. 78.579GPT-6 Luna (Max)
  4. 102.7103GPT-5.6 Terra (Max)
  5. 106.6107GPT-6.1 Sol (Xhigh)
  6. 109.6110Claude Opus 5.5 (Xhigh)
  7. 161.5162GPT-6 Astra (Xhigh)
  8. 180.5181Claude Fable 5.1 (Max)
  9. 236236GPT-6.1 Sol (Max)
  10. 278.3278GPT-6 Astra (Max)
Data from Artificial Analysis

Price

$ per 1M tokens (3:1) · #154 of 169
  1. $4.54.5Gemini 3.1 Pro Preview
  2. $4.54.5GPT-5.6 Terra (Low)
  3. $4.54.5GPT-5.6 Terra (Non-reasoning)
  4. $4.814.81GPT-5.3 Codex (Xhigh)
  5. $88Claude Opus 5.5 (Max)
  6. $88Claude Opus 5.5 (Xhigh)
  7. $88Claude Opus 5.5 (High)
  8. $88Muse Wonder (Max)
  9. $88Claude Opus 5.5 (Medium)
  10. $88Claude Opus 5.5 (Low)
Data from Artificial Analysis

Nearby models

  • Claude Opus 5.5 (Max)Anthropic57.6
  • 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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