Codex Model Router

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Cost-efficient model and reasoning-effort routing skill for OpenAI Codex.

byAlan Liu

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Open source

Description

A Codex skill that routes tasks across GPT-5.6 Luna, Terra, and Sol, escalating difficult work to GPT-6 Astra to optimize token usage. It provides decision support by recommending the lowest suitable model and reasoning effort for a given task, featuring a two-step confirmation workflow to prevent over-provisioning.

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Details

Why this is interesting: Implements a novel routing strategy for frontier GPT-6 and GPT-5.6 models to optimize cost and performance in agentic…
Attributed to: @alanliuc-a11y
Built with: GPT-6 Astra GPT-5.6 Luna GPT-5.6 Terra
Links: View tweet
Tags: #codex-skill #model-routing #token-optimization #openai

Discovered: X
First posted: X · Sep 6, 2026
Listed: Added 55d ago
Build: Strong
Models: Strong

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