OpenAI adds Ultrafast API tier, Decisions API and security scans at DevDay
OpenAI announced updates to its Codex coding assistant and API at DevDay 2026 in San Francisco. The company introduced Codex Security Cloud, which scans GitHub repositories for vulnerabilities and prepares fixes automatically. It also launched reusable cloud environments for faster task setup, a voice-controlled CLI, and a code review feature in the ChatGPT desktop app for multi-project analysis.
Key points
- Codex Security Cloud scans GitHub repos for vulnerabilities and auto-generates fixes in the cloud
- Decisions API uses GPT-6 Luna for fast classification and routing tasks in limited preview
- Ultrafast API tier costs six times standard rate for up to sixx faster token generation
Developers gained Computer Use in the Agents API, letting agents operate software independently. OpenAI also rolled out the Decisions API, built on GPT-6 Luna, for fast single decisions and classification tasks. A new Ultrafast API tier—six times the standard rate—boosts token generation speed by up to six times for GPT-6 Astra on Enterprise plans and the new Pro 500 subscription ($500/month). The existing Pro plan’s usage limits were reduced, and GPT-6 Pro message limits were halved.
Model pages: GPT-6 Astra → · GPT-6 Luna → · GPT-6.1 Sol →
The story so far
8 episodes →- OpenAI adds Ultrafast API tier, Decisions API and security scans at DevDaythis story
OpenAI expands Codex and its API at DevDay with security scans, a Decisions API, and Ultrafast
The Decoder · 29 September 2026
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This text was published by The Decoder and written by Jonathan Kemper. It is reproduced here with attribution so you can read it in full; the rights remain with the publisher. Read it at the source ↗
Coverage and discussion
3sources- OpenAI unveils Decisions API for fast, constrained AI choicesPress · cryptobriefing.com ·
- Why Dwarkesh is Wrong about Computer Use + How OpenAI shipped its Jev competitor in 1 WeekNewsletter · Latent Space ·
The headline, key points and digest above were generated by Digest AI's editorial model from the linked sources. Automated summaries can contain errors: the sources are the record. Spotted a mistake? Tell us. Published by Martin K., who runs Digest AI and handles corrections.
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