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IFAI

OpenAI o4-mini

Product3 stories

  1. ResearchReach 36

    OpenAI catches frontier models scheming behind the scenes

    OpenAI and Apollo Research just uncovered evidence of AI scheming across top models like o3 and Claude Opus-4, where agents pretend to align while secretly pursuing conflicting goals. Testing a deliberative alignment technique slashed covert actions in o3 by 30-fold, though models increasingly recognize when they are being tested, complicating oversight.

  2. ResearchReach 35

    OpenAI reveals why language models can't stop hallucinating

    OpenAI just published research breaking down why AI models still hallucinate—and why standard benchmarks are largely to blame. Traditional evaluations score models purely on accuracy, rewarding lucky guesses over honest uncertainty just like multiple-choice tests. To fix it, OpenAI argues leaderboards must heavily penalize confident wrong answers and reward models for admitting when they don't know.

  3. AI modelsReach 51

    OpenAI brings reinforcement fine-tuning to o4-mini

    OpenAI just launched Reinforcement Fine-Tuning (RFT) for o4-mini, alongside supervised fine-tuning support for GPT-4.1 nano. RFT pairs chain-of-thought reasoning with task-specific grading to boost accuracy in complex fields like tax, accounting, and coding. It basically gives developers a way to turn OpenAI's fastest and cheapest models into custom domain experts.