GPT-6 Astra free? What Free / Go users can use instead

“gpt-6 astra free” usually means: can I run Astra without paying? Official plan tables say no for Free/Go ChatGPT sign-in—use Luna (and API key billing if you call models yourself).

Short answer

No—GPT-6 Astra is not the Free/Go Codex default. OpenAI’s plan tables and Sol/Luna launch notes point Free and Go users to GPT-6 Luna in the desktop app / Codex paths, while Plus and above get Astra in Work and Codex (with stricter burn on Plus).

What Free / Go users can do

Use gpt-6-luna for ChatGPT-signed Codex when that is what your plan exposes.
If you have an API key, you can call paid models (including Astra) at API rates—that is not “free Astra.”
Upgrade to Plus if you need included Astra allowance in Work/Codex; expect limited Astra messages vs Sol/Luna.
Keep Codex CLI updated; Astra needs ≥ 0.153.0 when your plan includes it.

After GPT-5.5 retirement (ChatGPT-signed Codex)

OpenAI retired GPT-5.5 from ChatGPT-signed Codex on 2026-10-14 (API-key sessions may still use it). Practical guidance on this fan site: Plus+ prefer gpt-6.1-sol; Free/Go prefer gpt-6-luna.

Sources

Call via API / relay

Besides ChatGPT-signed Codex plan allowance, you can call gpt-6-astra, gpt-6.1-sol, gpt-6-luna, and related models with an OpenAI-compatible API key (pay-as-you-go). If you need a third-party API relay for access or billing convenience, try TryAllAPI (tryallapi.com / APIPRO).

Note: TryAllAPI is not an official OpenAI service. Model availability and rates follow the relay console and OpenAI docs. For official access use OpenAI Platform.

Disclaimer

本站为粉丝作品，与 OpenAI / Codex 官方无关。 Fan work · Not affiliated with OpenAI or Codex. Pricing and availability change—verify on official OpenAI docs.