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GPT-5.6 Terra
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Tool use · Reasoning
Overview
Pricing
Evaluations
Evaluation overview
Overall rank
#30
87.7 points · 205 models
Long context rank
#10
91.1 points · 87 models
Data coverage
62 items
5 sources · updated through 2026-09-02
Domain performance
Coding
#25 / 191
89.2
Research
#33 / 196
88
Agents
#29 / 162
82.6
Vision
#29 / 88
84.8
Long context
#10 / 87
91.1
Evaluation highlights
All evaluations
CharXiv(RQ)
Multimodal · Google Gemini 3.8 Flash Official Release Evaluation
85.9%
5
/ 47
GPQA-Diamond
Reasoning · OpenAI GPT-5.6 Release
92.9%
17
/ 142
Terminal Bench 2.1 (Terminus-2)
Coding · Google Gemini 3.8 Flash Official Release Evaluation
87.4%
5
/ 37
Agents' Last Exam
Agents · OpenAI GPT-5.6 Release
50.4%
5
/ 36
MRCR v2 (8-needle 128K)
Long context · Google Gemini 3.7 Flash Official Release Evaluation
93.5%
2
/ 13
CyberGym
Cybersecurity · OpenAI GPT-5.6 Release
81.8%
11
/ 32
Basic information
Context (input / output)
1.05M / 128K
Release date
2026-07
Input modalities
Text · Image
Output modalities
Text
Family
GPT-5.6
Exact release date
2026-07-09
API model ID
gpt-5.6-terra
Availability
OpenAI
Full pricing
Input
$2 /1M
Output
$12 /1M
Related links
Official site
Version relationships
GPT-5.6 family
GPT-5.6 Luna
2026-07 · Same series
GPT-5.6 Sol
2026-07 · Same series
GPT-5.6 Terra
Current
2026-07 · Current model
Provider variants
xHigh / Codex Harness
Runtime modes
xHigh