All Releases

Proprietary release

Released July 2026

GPT-5.6 Terra: Release Intelligence, Performance & Price

The GPT-5.6 Terra release offers 6 models, each with different intelligence, performance, and pricing characteristics. Below is a comparison of the key metrics across the 6 models.

  • For intelligence, the top model of GPT-5.6 Terra is GPT-5.6 Terra (max) at 42.
  • For output speed, the fastest model is GPT-5.6 Terra (max) at 113 t/s.
  • For latency, GPT-5.6 Terra (Non-reasoning) at 0.86s offers the lowest time to first answer token.
  • For pricing, GPT-5.6 Terra (low) at $0.14 offers the lowest cost per task. Prices vary up to 9.7x across models.

Intelligence

Artificial Analysis Intelligence Index

Artificial Analysis Intelligence Index v4.3 incorporates 10 evaluations: AA-Briefcase, GDPval-AA v2, AutomationBench-AA, Terminal-Bench v4.0, SciCode, Humanity's Last Exam, GDP.pdf, CritPt, AA-Omniscience, AA-LCR v1.1
Estimate (independent evaluation forthcoming)

Intelligence Index vs. Cost per Intelligence Index Task

Artificial Analysis Intelligence Index · Weighted average cost (USD) per Artificial Analysis Intelligence Index task
Most attractive quadrant
GPT-5.6 Terra
Pareto line

Cost

Cost per Intelligence Index Task

Weighted average cost (USD) per Artificial Analysis Intelligence Index task, segmented by token type. Lower is better

Speed & Latency

Output Speed

Output tokens per second · Higher is better

Capability Scores

Capability Indices

Measures the performance of models on specific capabilities and industries
Finance & Accounting Index

Incorporates 7 evaluations: AA-Omniscience, GDPval-AA v2, AA-Briefcase, Humanity's Last Exam, AutomationBench-AA, AA-LCR v1.1, GDP.pdf · Higher is better

Strategy & Ops Index

Incorporates 6 evaluations: AA-Omniscience, GDPval-AA v2, AA-Briefcase, AutomationBench-AA, AA-LCR v1.1, GDP.pdf · Higher is better

Legal Index

Incorporates 7 evaluations: AA-Omniscience, GDPval-AA v2, AA-Briefcase, Humanity's Last Exam, AA-LCR v1.1, GDP.pdf, AutomationBench-AA · Higher is better

Healthcare & Medical Index

Incorporates 6 evaluations: AA-Omniscience, GDPval-AA v2, AA-Briefcase, MLCR-AA, Humanity's Last Exam, AutomationBench-AA · Higher is better

Engineering Index

Incorporates 6 evaluations: AA-Omniscience, Humanity's Last Exam, CritPt, GDPval-AA v2, AA-Briefcase, Terminal-Bench v4.0 · Higher is better

Economics Index

Incorporates 5 evaluations: AA-Omniscience, Humanity's Last Exam, GDPval-AA v2, AA-Briefcase, AA-LCR v1.1 · Higher is better

More from OpenAI

Further details

Weights
Provider Benchmarks
GPT-5.6 Terra (max)
OpenAI logoOpenAI
42
-
1M
$1.7
113
Not available
OpenAIAmazon Bedrock
GPT-5.6 Terra (xhigh)
OpenAI logoOpenAI
38
-
1M
$1.7
101
Not available
OpenAIMicrosoft Azure
GPT-5.6 Terra (high)
OpenAI logoOpenAI
34
-
1M
$1.7
93
Not available
OpenAIMicrosoft Azure
GPT-5.6 Terra (medium)
OpenAI logoOpenAI
30
-
1M
$1.7
99
Not available
OpenAI
GPT-5.6 Terra (low)
OpenAI logoOpenAI
28
-
1M
$1.7
95
Not available
OpenAI
GPT-5.6 Terra (Non-reasoning)
OpenAI logoOpenAI
22
-
1M
$1.7
93
Not available
OpenAIAmazon Bedrock