How I set OpenAI API usage limits to stop agent overspending and other AI billing nightmares

OpenAI API costs can spiral when agents run wild. Here's how to set spend limits, enable hard caps, and avoid surprise AI bills.
Inc

OpenAI Just Revealed Cheaper Versions of Its Flagship Model. Here’s How to Use Them

OpenAI has introduced GPT-5.4 mini and GPT-5.4 nano, two small, cost-efficient versions of its flagship AI model. In a press release, OpenAI said that 5.4 nano and mini are “our most capable small models yet,” coming close to matching the default GPT ...

OpenAI engineers cut ChatGPT guest traffic to a few hundred Nvidia GPUs, with no new hardware deployed.

OpenAI inference cost reduction cut ChatGPT guest traffic from tens of thousands of Nvidia GPUs to just a couple hundred, using software optimization alone. Engineers achieved more than 50% savings with techniques analysts believe include KV cache reuse,
BeInCrypto

OpenAI’s GPT-5.6 Is Here—But Most Users Still Cannot Access It

OpenAI has unveiled GPT-5.6 Sol, Terra, and Luna, but access remains restricted to government-approved partners ahead of a wider rollout.
Forbes

OpenAI Data Breach Exposes User Data. Here’s What To Do Immediately

A few days ago, on November 26th, right before Thanksgiving, OpenAI, the maker of ChatGPT, confirmed a recent security breach incident that started towards the beginning of November, which impacted its users, specifically those connected through OpenAI's APIs.

OpenAI's updated GPT-5.5 Instant is better at shopping, complex constraints, and understanding user intent — and it's already in the API

OpenAI is moving away from models that require heavy hand-holding and toward systems that can better infer the user’s goal, preserve constraints and adapt across multiple turns.