OpenAI
GPT-5.6 Terra is the everyday model of OpenAI's newest generation — GPT-5.6 intelligence tuned for speed and volume, at the same price point as GPT-5.4 before it.
1.05M tokens
Context
February 16, 2026
Knowledge cutoff
128,000 tokens
Max output
Fast
Speed
The always-on assistant for questions, explanations, and thinking out loud — 5.6-generation quality at everyday speed.
Quick fixes, snippets, reviews, and 'why is this failing?' moments where latency matters as much as smarts.
Emails, summaries, outlines, and rewrites, produced fast enough to iterate several times.
Batches of similar tasks — triaging, classifying, reformatting — where per-message cost and speed compound.
Tuned to this model — click any line to copy.
Terra is what you keep selected all day: quick questions, drafting, coding help, summaries, and the hundred small tasks where you want a smart answer now. It inherits the 5.6 generation's improvements in reasoning and instruction-following while staying responsive enough for rapid conversation.
On NinjaChat, GPT-5.6 Terra lives in the same picker as Claude Sonnet 5, Gemini 3.6 Flash, and DeepSeek V4 — the whole "daily driver" tier of the industry in one place, under one subscription. Switch models mid-thread and keep your history.
Reach for Terra by default; step up to GPT-5.6 Sol when a problem earns flagship treatment.
From zero to your first result in under a minute.
01
Sign up for NinjaChat — GPT-5.6 Terra is included in every plan.
02
Set Terra as your go-to model in the picker.
03
Chat naturally; keep threads going — it holds context well.
04
Escalate to GPT-5.6 Sol in the same thread for the genuinely hard problems.
Where it wins, and where it doesn't.
Much faster and cheaper for day-to-day work
Sol is the pick when a problem needs frontier depth
Newer generation at the same price point
5.4 is battle-tested with a long production track record
Practical, tool-savvy answers with OpenAI's ecosystem strengths
Sonnet 5 often edges it on writing tone
The same subscription covers the image studio and video generation.



One subscription covers every model on NinjaChat, GPT 5.6 Terra included.