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Benchmark

GPT-5.6 Terra (Xhigh)

  • OpenAI
  • Proprietary
  • Reasoning

Intelligence

Intelligence Index

#51 of 266
  1. 39.840Gemini 3.8 Flash (Medium)
  2. 39.840Qwen3.8-Flash-Next
  3. 38.939Muse Spark Open (Xhigh)
  4. 38.438Mistral Large 4 Preview
  5. 38.138GPT-6 Luna (Max)
  6. 3838GPT-5.6 Terra (Xhigh)
  7. 37.938MiMo-V2.6-Flash
  8. 37.838Claude Haiku 5.5 (High)
  9. 3636DeepSeek V4 Pro 0813 (Max)
  10. 35.936Claude Sonnet 5.5 (Low)
Data from Artificial Analysis

Evaluations

  • AA-Omniscience Accuracy45.5%#40
  • Humanity's Last Exam41.9%#47
  • Terminal-Bench 4.010.1%#59
  • AA-LCR79%#63
  • SciCode52.3%#51
  • CritPt27.1%#23
  • MMMU-Pro79.5%#29
  • GPQA Diamond90.8%#22
  • IFBench66.3%#26
  • τ²-Bench Telecom80.4%#39
  • τ²-Bench Banking29.7%#31
  • Terminal-Bench Hard62.9%#1
GPT-5.6 Terra (Xhigh)Median
Data from Artificial Analysis

Speed and price

Speed

tokens per second · #69 of 162
  1. 120120GPT-6 Luna (Non-reasoning)
  2. 120120Nova 2.0 Pro Preview (Low)
  3. 120120GPT-6 Luna (High)
  4. 119119Ministral 3 8B
  5. 119119GPT-5.6 Terra (High)
  6. 118118GPT-5.6 Terra (Xhigh)
  7. 118118Llama 4 Scout
  8. 118118Gemma 4 12B (Non-reasoning)
  9. 116116GPT-6 Luna (Low)
  10. 116116GPT-5.6 Terra (Low)
Data from Artificial Analysis

Latency

seconds to first token · #133 of 162
  1. 10.511Claude Sonnet 5.5 (High)
  2. 10.511GPT-6 Luna (High)
  3. 10.611Nova 2.0 Pro Preview (Low)
  4. 12.513Nova 2.0 Pro Preview (Medium)
  5. 1313Nova 2.0 Lite (Medium)
  6. 15.115GPT-5.6 Terra (Xhigh)
  7. 15.716Claude Opus 5.5 (Medium)
  8. 16.617Nova 2.0 Lite (High)
  9. 19.820GPT-6 Luna (Xhigh)
  10. 2020Claude Fable 5.1 (High)
Data from Artificial Analysis

Price

$ per 1M tokens (3:1) · #146 of 169
  1. $44GPT-6.1 Sol (Low)
  2. $44Claude Sonnet 5.5 (Medium)
  3. $44Claude Sonnet 5.5 (Low)
  4. $4.384.38Command A
  5. $4.54.5GPT-5.6 Terra (Max)
  6. $4.54.5GPT-5.6 Terra (Xhigh)
  7. $4.54.5GPT-5.6 Terra (High)
  8. $4.54.5GPT-5.6 Terra (Medium)
  9. $4.54.5Gemini 3.1 Pro Preview
  10. $4.54.5GPT-5.6 Terra (Low)
Data from Artificial Analysis

Nearby models

  • Gemini 3.8 Flash (Medium)Google39.8
  • Qwen3.8-Flash-NextAlibaba39.8
  • Muse Spark Open (Xhigh)Meta38.9
  • Mistral Large 4 PreviewMistral38.4
  • GPT-6 Luna (Max)OpenAI38.1
  • MiMo-V2.6-FlashXiaomi37.9
  • Claude Haiku 5.5 (High)Anthropic37.8
  • DeepSeek V4 Pro 0813 (Max)DeepSeek36
Data from Artificial Analysis

Same lab

  • GPT-6 Astra (Max)OpenAI52.7
  • GPT-6 Astra (Xhigh)OpenAI52.4
  • GPT-6.1 Sol (Max)OpenAI51.8
  • GPT-6.1 Sol (Xhigh)OpenAI51
  • GPT-6 Astra (High)OpenAI50.9
  • GPT-6.1 Sol (High)OpenAI50.2
  • GPT-6 Astra (Medium)OpenAI49.6
  • GPT-6.1 Sol (Medium)OpenAI47.8
Data from Artificial Analysis
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