OpenAI released GPT-6.1 Terra on October 26, 2026

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OpenAI launches GPT-6.1 Terra, a computer-use model at half the price of GPT-6.1 Sol

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OpenAI released GPT-6.1 Terra as a mid-tier AI model balancing speed, capability, and cost

OpenAI rates GPT-6.1 Terra Critical in cybersecurity under OpenAI's Preparedness Framework

OpenAI rates GPT-6.1 Terra High in biological and chemical capability under OpenAI's Preparedness Framework

OpenAI describes GPT-6.1 Terra as a fast, efficient model for visual reasoning, computer use and writing

OpenAI says GPT-6.1 Sol and GPT-6 Astra remain better than GPT-6.1 Terra for the most complex coding tasks

At its October 2026 launch, GPT-6.1 Terra's standard API prices were half those of GPT-5.6 Terra and GPT-6.1 Sol

At its October 2026 launch, GPT-6.1 Terra was available to ChatGPT Plus, Pro, Enterprise and Edu users in ChatGPT Work and Codex

In OpenAI's testing, GPT-6.1 Terra regressed against GPT-5.6 Terra on hate and extremism safety tests with image inputs

OpenAI says GPT-6.1 Terra solves 50.3% of the Terminal-Bench 4.0 command-line coding tasks, up from GPT-5.6 Terra's 21.5%

At launch, GPT-6.1 Terra's API prices were $1 per million input tokens and $5 per million output tokens

OpenAI says GPT-6.1 Terra cut GPT-5.6 Terra's error rate on OpenAI's internal error-inducing prompts from 53.6% to 16.7% at low reasoning effort

GPT-6.1 Terra uses the same safeguards stack as GPT-6.1 Sol and GPT-6 Astra

OpenAI says GPT-6.1 Terra matches GPT-6 Astra on the Agents' Last Exam computer-use benchmark at a tenth of Astra's price per token

OpenAI says GPT-6.1 Terra scores 15 points above GPT-5.6 Terra on the Agents' Last Exam computer-use benchmark at about a third of the cost

OpenAI says GPT-6.1 Terra completes Agents' Last Exam computer-use tasks at about a ninth of Claude Opus 5.5's cost per task

OpenAI should withhold the release of AI models capable of autonomously developing software exploits