I Tested GPT-6.1 Terra: Can AI Really Use Your Computer?
OpenAI released GPT-6.1 Terra on 26 October 2026 as a model built to use your computer, at half the price of GPT-6.1 Sol; the author gave it six real jobs on his own PC via Codex and checked each result against an answer key.
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Terra is OpenAI's 26 October 2026 model, built to use your computer at about half the price of GPT-6.1 Sol.
How it was tested: Codex CLI 0.166.0 alpha on Windows, 30 October 2026, six real jobs checked against an answer key.
Job 1: the messy folder.
Job 2: the bank export.
Job 3: a website.
Job 4: the broken script.
Jobs 5 and 6: limits and traps.
Costs are worked out at API prices from the token counts Codex reported; the benchmark numbers are OpenAI's own (OSWorld 2.1, max effort).
The verdict: so, can it use your computer?
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