Luna Model Gets a Price Cut

Melvin Vivas · X post · 2026-08-01 · Open on X

Topics: LLM Fundamentals, LLMOps, Deployment & Monitoring · Level: beginner

Summary

The creator agrees that Luna is a great low-cost model and says a recent price cut makes it even better value. This is useful pricing information when choosing a model.

Key points

• Luna (GPT 5.6 Luna) is seen as a strong, low-cost model.
• A new price cut makes it even more cost-effective.
• Check current pricing when choosing models for cost-sensitive work.

Resources mentioned

• GPT 5.6 Luna · tool · openai.com · paid
  The OpenAI model used inside Codex for the demo. The transcript gives the variant name as 'Soul', which is unclear.
  Also in: Set Codex subagent model and reasoning to save usage limits (Melvin Vivas on X · notes), Use GPT-5.6 Luna in Codex for Terminal Tasks (Melvin Vivas on X · notes), Match Reasoning Effort to Task Length in Codex (Astra/Sol) (Melvin Vivas on X · notes), Run Coworker desktop agents cheaply with GPT-5.6 Luna on OpenRouter (Melvin Vivas on X · notes) and 24 more