aiintelligence

GPT-5.6 Terralatest from openai

People use it to help with everyday coding and reasoning tasks.

openai’s newest large language model, able to hold about 1050k tokens of context (roughly 788k words) in one conversation, working across text and image and file->text. You reach it through an API or through tools built on it. Built for developers and professionals who do everyday coding and reasoning. openai describes it as: “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.” source ↗

Our tested score
93/100 · Humanising AI text
12 tasks, marked blind by 3 judges · 16 Aug 2026 · receipts
96/100 · Book writing
12 tasks, marked blind by 3 judges · 16 Aug 2026 · receipts
94/100 · Health questions
12 tasks, marked blind by 3 judges · 16 Aug 2026 · receipts
93/100 · Legal questions
12 tasks, marked blind by 3 judges · 16 Aug 2026 · receipts
93/100 · Emotional support
12 tasks, marked blind by 3 judges · 16 Aug 2026 · receipts
91/100 · Travel planning
12 tasks, marked blind by 3 judges · 16 Aug 2026 · receipts
94/100 · Translation
12 tasks, marked blind by 3 judges · 16 Aug 2026 · receipts
97/100 · Creative writing
12 tasks, marked blind by 3 judges · 16 Aug 2026 · receipts
94/100 · Research
12 tasks, marked blind by 3 judges · 16 Aug 2026 · receipts
91/100 · CV writing
12 tasks, marked blind by 3 judges · 16 Aug 2026 · receipts
96/100 · Presentations
12 tasks, marked blind by 3 judges · 16 Aug 2026 · receipts
95/100 · Vibe coding
12 tasks, marked blind by 3 judges · 16 Aug 2026 · receipts
89/100 · Job applications
12 tasks, marked blind by 3 judges · 16 Aug 2026 · receipts
99/100 · Social posts
12 tasks, marked blind by 3 judges · 16 Aug 2026 · receipts
93/100 · Flashcards
12 tasks, marked blind by 3 judges · 16 Aug 2026 · receipts
93/100 · Coding
18 tasks, marked blind by 3 judges · 16 Aug 2026 · receipts
94/100 · Study notes
12 tasks, marked blind by 3 judges · 14 Aug 2026 · receipts
97/100 · Customer replies
12 tasks, marked blind by 3 judges · 14 Aug 2026 · receipts
99/100 · Maths
12 tasks, marked blind by 3 judges · 14 Aug 2026 · receipts
97/100 · Emails
12 tasks, marked blind by 3 judges · 14 Aug 2026 · receipts
100/100 · Extraction
12 tasks, marked blind by 3 judges · 13 Aug 2026 · receipts
96/100 · Summarising
12 tasks, marked blind by 3 judges · 13 Aug 2026 · receipts
88/100 · Essays
12 tasks, marked blind by 3 judges · 13 Aug 2026 · receipts
98/100 · Spreadsheets
12 tasks, marked blind by 3 judges · 13 Aug 2026 · receipts
92/100 · Best-value API
30 tasks, marked blind by 3 judges · 11 Aug 2026 · receipts
API price (per 1M in/out)
$2 / $12
OpenRouter API17 Aug 2026
Battle record
1W – 3L
in our published battles
Forum sentiment (90d)
20%
developer-forum posts: 5 opinions in 75
What people are posting (90 days)
Loudest post this quarter
“Regression: encrypted MultiAgentV2 messages remove readable task audit trail”
Battles fought
DeepSeek V4 Pro vs GPT-5.6 Terra · Best-value API4–7GPT-5.6 Terra winsGPT-5.6 Terra vs Grok 4.5 · Best-value API4–4dead heatGLM 5.2 vs GPT-5.6 Terra · Best-value API3–2GLM 5.2 winsKimi K3 vs GPT-5.6 Terra · Best-value API6–3Kimi K3 wins

Compare GPT-5.6 Terra against…

GPT-5.6 Luna · spreadsheets & ExcelGPT-5.3-Codex · spreadsheets & ExcelGPT-5.6 Sol · spreadsheets & ExcelGPT-5.5 · spreadsheets & ExcelGLM 5.2 · spreadsheets & ExcelQwen3.7 Max · spreadsheets & ExcelGrok 4.5 · spreadsheets & ExcelClaude Opus 4.8 · spreadsheets & ExcelDeepSeek V4 Flash · spreadsheets & ExcelGPT-5.6 Sol · essay writingGPT-5.5 · essay writingGPT-5.6 Luna · essay writingGPT-5.3-Codex · essay writingClaude Sonnet 5 · essay writingClaude Opus 4.6 · essay writingGrok 4.5 · essay writingQwen3.7 Max · essay writingGemini 3.1 Pro Preview · essay writingClaude Opus 4.8 · summarising documents
Every claim we hold (3)