#3OpenAIClosed weights

GPT-6.1 Terra

OpenAI's mid-range GPT-6.1 model. Pricing and context window as listed on OpenRouter: $1/$5 per million tokens, 1.1M context. Artificial Analysis scores the Max setting at 51.

Official provider page Compare with another model

Overall: 86.4
Input $/M: $1.00
Output $/M: $5.00
Context: 1.1M
Released: Oct 26, 2026
Updated: Nov 2, 2026

Category scores

Reasoning & Math
rank 7
86.4

Overall rank history

Weekly snapshots. Lower is better.

Strengths

Low cost per task on Artificial Analysis
1.1M token context window

Weaknesses

Scores below GPT-6 Astra on the Intelligence Index
Closed weights