Compare Models
GPT-5.6 Terra

Release Date: Jul 9, 2026

Developer OpenAI 🇺🇸
Context Window 1M
Max Output Tokens 128k
Token Costs (in/out) $2.00/12.00
Weights Private
Input Modalities

Accuracy

59.59 % ± 1.33

Cost / Test (Vals Index)

$ 4.693

Latency

28 min 50 s

Vals Index
BenchmarksAccuracyRankings
Vals Index

0.0%

±1.33
7/48
Code Migration

0.0%

±4.28
4/51
EMB

0.0%

±3.11
9/48
Finance Agent (v2)

0.0%

±2.07
9/51
Legal Research Bench

0.0%

±3.42
10/51
MedCode

0.0%

±2.17
32/86
MedScribe

0.0%

±1.95
34/87
MortgageTax

0.0%

±0.93
25/96
ProofBench v1.1

0.0%

±4.41
6/24
SAGE

0.0%

±3.40
28/77
Public Benefits Bench v1.1

0.0%

±1.26
13/30
TaxEval v2

0.0%

±0.84
6/141
Vibe Code Bench v1.1

0.0%

±4.20
13/86
Harvey's Legal Agent Benchmark

0.0%

±0.83
34/52
GPQA Diamond

0.0%

±1.91
22/135
IOI

0.0%

±0.92
7/62
LiveCodeBench

0.0%

±1.02
25/140
LegalBench

0.0%

±0.45
20/139
MMLU Pro

0.0%

±0.33
38/135
MMMU

0.0%

±0.82
18/90
ProgramBench

0.0%

±0.50
7/41
SkillsBench

0.0%

±4.47
9/30
SWE-bench

0.0%

±0.94
5/86
Terminal-Bench 2.1

0.0%

±2.25
8/57
Proprietary BenchmarksAcademic BenchmarksIndustry Partners
Vals
Default Provider : OpenAI
Temperature: Default
Top P: Default
Top K: Default
Max Output Tokens: 128,000
Reasoning Effort: max