GPT-5.6 Terra
OpenAI · 6 thinking configurations
Intelligence20.8
Input / 1M$2.00
Output / 1M$12.00
Context1M
Tariff: OpenAI · Source: artificial-analysis · USD per million tokens
Thinking configuration
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Compare this model’s measured thinking configurations.
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Efficient frontier: best measured score at each cost6 measured configurations · 0 without both values
Selected: thinking none · Click a point to switch configuration
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 IndexArtificial Analysis composite index, not a percentage. Different versions of the index are not directly comparable.
20.8 pointsGPQA DiamondGraduate-level scientific questions. Measures specialist reasoning rather than web-search quality.
74.6 %Humanity’s Last ExamDifficult questions across many disciplines, compared under the same evaluation setup.
11.4 %SciCodeCode generation for scientific research problems.
45.1 %Terminal-Bench 2.1Agent tasks in a terminal environment. Results also depend on the evaluation harness.
56.2 %MMMU-ProMultimodal understanding of academic problems that include images.
66.7 %Omniscience accuracyFactual accuracy in Artificial Analysis's Omniscience evaluation.
36.8 %Specifications from the catalog
Inputfile, image, text
Outputtext
Tool callingYes
Structured outputYes
Speed84.0 tok/s
First token0.78 s
Maximum output128K
Catalog listing date2026-07-09