Business · case page undated; read on October 15

LegalOn estimates a 65% Codex cost cut; no period is given

OpenAI customer story: LegalOn, a legal-software company, routes tasks for the coding agent Codex across three GPT-6 models and adds mode restrictions and budget caps, estimating daily costs about 65% lower than before. The three models are GPT-6 Luna, GPT-6.1 Sol and GPT-6 Astra. The mode restriction limits fast mode by default, and the baseline is earlier unrestricted use of GPT-5.5 Fast. The page says: "Together, model selection, feature restrictions, and budgets tailored to each business reduced estimated daily costs by approximately 65%." (OpenAI, case page) The lightest, Luna, handles well-specified implementation and sub-agents, Sol handles design and analysis, and the strongest, Astra, handles architecture. The 65% is the three measures combined, not model choice alone. It is the customer's own estimate, published by the vendor, and the measurement period isn't stated. The page's headline says costs were halved; the figure in the text is about 65%. Routing tasks by model tier is one of three cost measures, and the page doesn't break out what each saved, so the share from tiering can't be told. How we checked →

Concept illustration: on the left, a laptop screen shows a window titled CODEX, where a fanned stack of cards showing a checklist, a line chart and a layered-stack icon sends three red arrows to three panels labelled GPT-6 LUNA, GPT-6.1 SOL and GPT-6 ASTRA, each holding a matching icon and a speech bubble of grey lines, with a toggle switch, a padlock and a partly filled bar along the bottom of the window. On the right, a speech bubble containing a tag outline and a blue down arrow sits above a white desk sign lettered LEGALON next to a blue geometric mark.

Source and checks

This item ran in the brief of Oct 16, 2026, alongside 19 other items. How we checked it, the quote checks and what was still missing that day are on that issue's How we checked page.

Cite this item

SecondSource (2026). "LegalOn estimates a 65% Codex cost cut; no period is given." https://secondsource.io/en/product/2026-10-16-1/. Accessed access date.