# Three unannounced OpenAI "aurora" models appear in API

> Three undocumented OpenAI model IDs named "aurora" briefly appeared in the company's API on 18 October.

*Model IDs for aurora-red-alpha, aurora-green-alpha and aurora-blue-alpha showed up on 18 October, with no documentation from OpenAI.*

By Bez · FeaturedDaily
Canonical: https://featureddaily.com/news/three-unannounced-openai-aurora-models-appear-in-api

**What happened:** Three undocumented model IDs named "aurora" briefly appeared in OpenAI's API on 18 October, according to [Crypto Briefing](https://cryptobriefing.com/openai-aurora-alpha-models-api/).

**The details:** The IDs are aurora-red-alpha, aurora-green-alpha and aurora-blue-alpha. Each carries an "alpha" tag.

**The numbers:** Responses differed by variant. Calls to aurora-red-alpha returned 503 capacity errors. The green and blue variants returned 404s.

**The catch:** OpenAI has published no changelog, pricing or use case for any of the three. It has not said what the models are.

**Why it matters:** A 503 capacity error suggests something sits behind the red ID, while the 404s on green and blue point the other way. Neither response confirms what the models are.

**The context:** The details here come from a secondary summary of the Crypto Briefing report. The full article was not reviewed.

**What's next:** OpenAI has not confirmed what the models are or whether it will release them. Watch the company's changelog for any announcement.

## Key takeaways

- Three "aurora" alpha model IDs surfaced in OpenAI's API.
- Red returned 503 errors; green and blue returned 404s.
- OpenAI has published no changelog, pricing or use case.

## Sources

- [OpenAI aurora alpha models appear in API](https://cryptobriefing.com/openai-aurora-alpha-models-api/) — Crypto Briefing, 2026-10-18