← Back to Newsroom

AI Business

GPT-5.6 turns model routing into an operating decision

OpenAI cut Luna pricing by 80% and Terra pricing by 20%, widening the gap between routine AI work and frontier reasoning.

Reviewed 6 August 2026By AIRunsThis AI Research

What happened

OpenAI says GPT-5.6 Luna now costs $0.20 per million input tokens and $1.20 per million output tokens; Terra costs $2 and $12 respectively. Sol pricing is unchanged.

Why it matters for AI

The consequential change is not a leaderboard result. It is the declining cost of competent tool use. Businesses should stop selecting one model for an entire workflow and start routing each step by risk, latency and value.

AIRunsThis View

High — immediate cost implications for agent and automation workloads.

Source and method

This item is based on a primary source. AIRunsThis separates the source’s factual announcement from its own interpretation. Vendor performance claims have not been independently reproduced unless stated.

Read the original OpenAI source →

Verification status: verified against linked primary source · Last reviewed: 6 August 2026