OpenAI released GPT-6.1 Terra. It combines visual reasoning with precise computer use. Standard API prices are 50% lower than GPT-5.6 Terra and GPT-6.1 Sol. It scores 15 percentage points higher on Agents’ Last Exam at one-third the cost. At max effort it is three times as token efficient as Claude Opus 5.5. It is over three times faster than GPT-6 Astra and GPT-6.1 Sol. Error rates at low reasoning effort fell by 37 percentage points. It solves 50.3% of Terminal-Bench 4.0 coding tasks at max effort. It meets the Critical threshold in cybersecurity under OpenAI’s Preparedness Framework. It is available now in ChatGPT Work, Codex and the OpenAI API.
What changed
GPT-5.6 Terra was the prior model in this cost-efficiency tier.
What it unlocks
Automating high-volume computer-based tasks like reading invoices and entering accounting data.
- 50% lower standard API prices than GPT-5.6 Terra and GPT-6.1 Sol
- $1 per million input tokens, $5 per million output tokens
- 15 percentage points higher on Agents’ Last Exam at 1/3 the cost
- 37 percentage points drop in error rate at low reasoning effort
What you need to act on it
- Plus, Pro, Enterprise, or Edu plan in ChatGPT Work or Codex
- OpenAI API access
Sources