GPT-6.1 Terra: a computer-use model at half the API price

GPT-6.1 Terra is OpenAI's mid-tier model for computer use (understanding what's on screen and acting across apps) and everyday writing. OpenAI says that at medium reasoning effort it scores 15 points higher than GPT-5.6 Terra on Agents' Last Exam at about a third of the costVendor claim, and that it solves 50.3% of Terminal-Bench 4.0 at max effortVendor claim. The API name is gpt-6.1-terra, with a 1.05M-token context window and up to 128K output tokens.

Standard pricing is $1 per million input tokens and $5 per million output, half of SolVendor claim, which makes high-volume screen automation like reading invoices or filling forms much cheaper to run. OpenAI reports its internal error rate at low effort dropped from 53.6% to 16.7%Vendor claim, so it's worth testing a cheap low-effort setup first and raising effort only where needed. OpenAI still points to Sol or Astra for the hardest coding work.