# GPT-6.1 Terra is here! Half-price API and faster, smarter computer use

Hi everyone, it's Shii-chan!

OpenAI has a fast, capable new model called GPT-6.1 Terra, and the price is a real eye-opener. Let's take a look!

## What was announced?

OpenAI News introduced GPT-6.1 Terra, a fast and efficient model for visual reasoning, computer use and clearer writing. OpenAI points to tasks like drafting proposals, reading technical drawings, filling out forms and editing video.

## Why it matters

The key point is bringing computer use to a speed and price that people can use every day. It is lighter than the higher-end GPT-6.1 Sol and GPT-6 Astra, so the question is how well it handles real agent work.

## What changes

- Standard API prices are 50% lower than GPT-5.6 Terra and GPT-6.1 Sol
- In ChatGPT Work and Codex, the same usage allowance covers more tasks than GPT-5.6 Terra (and substantially more than GPT-6.1 Sol or GPT-6 Astra)
- Factuality improved too: on OpenAI's internal error-inducing prompts, the error rate at low effort fell from 53.6% to 16.7%

## Dive Deep

First, API pricing:

- Input: $1 per million tokens
- Cached input: $0.05 per million tokens
- Output: $5 per million tokens

Here are the main benchmark claims from OpenAI:

- Agents' Last Exam (professional tasks): at medium effort it scores 15 points higher than GPT-5.6 Terra at about one-third the cost, and is on par with GPT-6 Astra at roughly one-tenth the per-token price. At max effort it is over three times as token-efficient as Claude Opus 5.5, with about 9x lower cost per task. It finishes tasks over three times faster than GPT-6 Astra and GPT-6.1 Sol
- MMMU-Pro (visual reasoning): beats GPT-5.6 Terra at every reasoning setting
- OSWorld 2.1 (desktop app use): at medium effort it surpasses GPT-5.6 Terra's best score at a lower cost
- Terminal-Bench 4.0 (coding): 50.3% at max effort, versus GPT-5.6 Terra's published 21.5%. OpenAI says GPT-6.1 Sol and GPT-6 Astra remain the better choice for the most complex coding
- Terminal-Bench-Science 0.1: at max reasoning it beats GPT-6.1 Sol at lower cost

On safety, it meets the "Critical" cybersecurity threshold under the Preparedness Framework and keeps the protections built for GPT-6 Astra. Compared with GPT-5.6 Terra, it is more likely to stay in scope, disclose limitations and blockers, and resist prompt injection.

Availability:

- ChatGPT Work and Codex: Plus, Pro, Enterprise and Edu, starting today
- API: model name `gpt-6.1-terra`

The system card is at https://deploymentsafety.openai.com/gpt-6-1-terra.

## Wrap-up

- GPT-6.1 Terra is a fast, efficient model strong at visual reasoning and computer use
- API pricing is $1 input / $0.05 cached input / $5 output per million tokens
- Available in ChatGPT Work, Codex and the API (`gpt-6.1-terra`)
- The hardest coding is still better suited to GPT-6.1 Sol or GPT-6 Astra

If agent cost and speed are your headaches, this one is worth a look!