OpenAI Developers posted on March 12, 2026 that the Video API now supports a broader Sora 2 workflow. The update adds reusable characters, video extensions, longer clips, portrait and landscape exports, and batch processing for studio-style pipelines.
OpenAI said on March 5, 2026 that GPT-5.4 is rolling out across ChatGPT, the API, and Codex. The new model combines GPT-5.3-Codex coding capability with OpenAI’s mainline reasoning stack, adds native computer-use features, and introduces experimental 1M-token context in Codex.
OpenAI says it plans to acquire Promptfoo and bring its evaluation, red-teaming, and traceability tooling into OpenAI Frontier. Promptfoo's open-source project will stay under its current license, and the deal remains subject to customary closing conditions.
OpenAI says Codex Automations are generally available and now expose controls for model choice, reasoning level, branch strategy, and reusable templates. The update pushes Codex from ad hoc sessions toward repeatable background workflows for software teams.
OpenAI and Amazon on February 27, 2026 announced a multi-year strategic partnership that combines a $50 billion Amazon investment with new Bedrock, Frontier, and Trainium commitments. OpenAI says it will also consume approximately 2 gigawatts of Trainium capacity through AWS infrastructure.
OpenAI introduced a new evaluation suite and research paper on Chain-of-Thought controllability. The company says GPT-5.4 Thinking shows low ability to obscure its reasoning, which supports continued use of CoT monitoring as a safety signal.
OpenAI says GPT-5.4 Thinking and Pro are rolling out gradually across ChatGPT, the API, and Codex. The company positions GPT-5.4 as a unified frontier model for professional work with stronger coding, tool use, and 1M-token context.
OpenAI and Amazon announced a multi-year strategic partnership on February 27, 2026. The deal combines a new Amazon Bedrock-based Stateful Runtime Environment, exclusive third-party AWS distribution for OpenAI Frontier, approximately 2 gigawatts of Trainium capacity, and a $50 billion Amazon investment.
OpenAI Developers published a March 11, 2026 engineering write-up explaining how the Responses API uses a hosted computer environment for long-running agent workflows. The post centers on shell execution, hosted containers, controlled network access, reusable skills, and native compaction for context management.
OpenAI said Codex Security is rolling out in research preview via Codex web. The company positioned it as a context-aware application security agent that reduces noise while surfacing higher-confidence findings and patches.
OpenAI said it will acquire Promptfoo and fold its security and evaluation stack into OpenAI Frontier. The company said Promptfoo will remain open source and current customers will continue to receive support.
OpenAI announced on X that Codex Security has entered research preview. The company positions it as an application security agent that can detect, validate, and patch complex vulnerabilities with more context and less noise.