A documented GPT-5.5 versus GPT-5.4 API comparison covering product retirement scope, token rates, context, output, tools and evaluation method.
Use 25 source-controlled prompts to trace requirements, build evidence matrices, calibrate provisional scores and draft an award memo for human approval.
Learn how publishing, task state, environment variables, network secrets, Personal vault values and workspace permissions differ in Codex Cloud.
Build a GPT-5.5 Batch API classifier with strict JSON, a human-labelled holdout, custom-ID reconciliation, error handling and review gates.
A dated guide to GPT-6.1 Sol access, API pricing, model limits, OpenAI-reported evaluations and adoption checks for Work and Codex.
Why this playbook starts with OpenAI’s Australia account, not a verdict OpenAI’s September 28 post about Australia should be read as the company’s own account of what it says happened, what it says it has done, and what it says it will change. It is not an independent audit, a…
What the September 28 Lenfest/OpenAI announcement actually says On September 28, 2026, Lenfest and OpenAI announced an expansion of the Lenfest AI Collaborative and Fellowship Program, describing it as the largest AI fellowship program in American journalism. The announcement matters because it is not framed as a single newsroom tool…
A safe prompt library for authorized local-newsroom work This prompt library is built for local newsrooms and the adjacent teams that make journalism sustainable: editors, reporters, audience staff, product managers, developers, data analysts, revenue teams, advertising staff, donor and membership teams, translators, archivists, and operations leaders. It is not a…
What OpenAI’s Frontier Training Safety-Case Proposal Is—and Is Not OpenAI’s September 28 proposal on safety cases for frontier AI training should be read as an aspirational governance architecture for high-stakes frontier reinforcement-learning training, not as a universal standard, binding law, completed implementation, or proof that any particular model or training…
What changed on September 28: Health can explain a selected chart, metric, or record OpenAI’s September 28, 2026 release notes say ChatGPT added personalized explanations and insights in the Health tab when an eligible user selects a chart, metric, or record. In practical terms, the update changes the workflow from…
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