# OpenAI releases GPT-6.1 Terra with lower prices and fewer hallucinations

> Original title: GPT-6.1 Terra pushes the cost efficiency frontier

- Source: Artificial Analysis Articles
- Published: 2026-10-26T04:00:00.000Z
- Bad Influence: https://badinfluence.news/items/gryr2hl562b3xq6dv39ikrnn7
- Original: https://artificialanalysis.ai/articles/gpt-6-1-terra-pushes-the-cost-efficiency-frontier

## Summary

Artificial Analysis reports that OpenAI has released GPT-6.1 Terra, priced at $1 per million input tokens and $5 per million output tokens, half or less of GPT-5.6 Terra's price. It scores 6 points higher on the Intelligence Index than GPT-5.6 Terra at max effort, at under a third of the cost per task, and cuts its AA-Omniscience hallucination rate from 88% to 38%.

## Why it matters

The source compares the new model with its predecessor and rivals on cost per task and benchmark scores, showing where the efficiency gains hold and where they stop.