GPT-6.1 Terra is the mid-tier model in OpenAI's GPT-6.1 series, priced below GPT-6.1 Sol. It is suited for everyday agentic, coding, and writing work, is particularly strong at understanding screenshots...
With CoreAI, you can start chatting with OpenAI: GPT-6.1 Terra instantly — no separate subscription needed. CoreAI lets you chat with OpenAI: GPT-6.1 Terra alongside 300+ other AI models from OpenAI and other providers like OpenAI, Anthropic, Google, Meta, and more.
Measured against all 450 chat models CoreAI serves, OpenAI: GPT-6.1 Terra sits at #3 for context capacity — 1.1M tokens, roughly 787,500 words or 1,575 pages of text in a single conversation. On price, it is the #119 cheapest of 210 standard-tier models by input cost. Released 2026-10-26, it is one of the 1 newest additions to the catalog. It supports step-by-step reasoning (thinking mode) and accepts image input.
Every model in this table is available on CoreAI — open the web app and run the same prompt through OpenAI: GPT-6.1 Terra and OpenAI: GPT-6.1 Sol Pro (batch) side by side to judge with your own eyes.
A typical question (about 1,000 tokens in, 500 out) runs $0.00350 on OpenAI: GPT-6.1 Terra's raw per-token rates; a heavy session with a 50K-token document costs about $0.075. On CoreAI you don't juggle these numbers — one subscription covers OpenAI: GPT-6.1 Terra and 300+ other models under a plan usage limit, with no API keys. See plans.
OpenAI: GPT-6.1 Terra handles 1.1M tokens of context — roughly 787,500 words, or about 1,575 pages of text in one conversation.
OpenAI: GPT-6.1 Terra's underlying rates are $1 per 1M input tokens and $5 per 1M output tokens. On CoreAI it is included in one subscription alongside 300+ models, so there is no per-token billing to manage.
Yes — OpenAI: GPT-6.1 Terra accepts image input, so you can attach screenshots, photos or diagrams and ask questions about them.
Yes. OpenAI: GPT-6.1 Terra can work through problems step by step before answering; on CoreAI you can toggle thinking mode per message.
Open the CoreAI web app or the iOS/Android app, pick OpenAI: GPT-6.1 Terra in the model selector, and chat — no API key, no per-token billing. One subscription covers OpenAI: GPT-6.1 Terra and 300+ other models.
The closest alternatives on CoreAI are OpenAI: GPT-6.1 Sol Pro (batch), OpenAI: GPT Sol Latest, Qwen: Qwen3.7 Flash — similar tier and capability. The fastest way to choose is running one prompt through them side by side in CoreAI's Compare view.
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