Codex · OpenAI · GPT · Crypto Briefing
OpenAI quietly lists three aurora alpha models in its API
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OpenAI / Wikimedia Commons (Public domain)
Key facts
- Aurora-alpha has been speculated to be connected to a GPT-5.3-Codex- Spark variant
- That model was first listed on OpenRouter in February 2026
- The aurora-alpha appearance on OpenRouter in February 2026 shows the aurora label has circulated for months before this latest batch
- Second, whether the models appear on third-party platforms like OpenRouter, as aurora-alpha did in February 2026
Summary
Identifiers named aurora-red-alpha, aurora-green-alpha and aurora-blue-alpha surfaced with no documentation or official comment from OpenAI. Three new model identifiers have appeared in the OpenAI API: aurora-red-alpha, aurora-green-alpha, and aurora-blue-alpha. OpenAI has not announced them, documented them, or explained what they do. The names were reported on October 18, 2026. Three model IDs, all carrying the “aurora” prefix and an “alpha” suffix, are now listed in OpenAI’s developer interface.