OpenAI: GPT-5.6 Terra
openai/gpt-5.6-terra
Context: 1,050,000In: $2.00/1MOut: $12.00/1MUpdated 2026-10-04
GPT-5.6 Terra is a balanced model in OpenAI's GPT-5.6 series, positioned between the flagship Sol tier and the cost-efficient Luna tier. It is suited for everyday coding, reasoning, and agentic...
Intelligence
42.1
Coding
76.7
Agentic
43.2
Metric profile
Trend over time
Classic evals (curated from model cards)
OpenAI GPT — manually maintained, may lag releases
MMLU-Pro
79.6%
GPQA Diamond
81.5%
HumanEval
96.8%
MATH-500
93%