On Thursday, OpenAI released GPT-5.4, a new foundation model billed as 'our most capable and efficient frontier model for professional work.' In addition to the standard version, GPT-5.4 is also available as a reasoning model (GPT-5.4 Thinking) or optimized for high performance (GPT-5.4 Pro). The new model comes with significantly improved benchmark results, including record scores in computer use benchmarks OSWorld-Verified and WebArena Verified. The new model also scored a record 83% on OpenAI's GDPval test for knowledge work tasks. '[GPT-5.4] excels at creating long-horizon deliverables such as slide decks, financial models, and legal analysis,' Foody said in the statement, 'delivering top performance while running faster and at a lower cost than competitive frontier models.' GPT-5.4 continues the company's efforts to limit hallucinations and factual errors. OpenAI said the new model was 33% less likely to make errors in individual claims when compared to GPT 5.2, and overall...
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