The verdict
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OpenAI has officially launched GPT-5.4, its most capable model to date, featuring a 1-million-token context window and the groundbreaking ability to autonomously execute multi-step workflows across software environments.
What’s New in GPT-5.4
The headline feature is the model’s autonomous workflow capability. GPT-5.4 can now chain together complex tasks across multiple applications without human intervention at each step. On the OSWorld-V benchmark, which measures real-world software task completion, the model scored 75% — slightly above the human baseline and matching or exceeding professional performance on a majority of knowledge-work scenarios.
The expanded 1-million-token context window means GPT-5.4 can process entire codebases, lengthy legal documents, or months of communication history in a single conversation, making it particularly valuable for enterprise use cases that require deep contextual understanding.
Market Impact
With OpenAI now surpassing $25 billion in annualized revenue and reportedly taking early steps toward a public listing, GPT-5.4 represents the company’s bid to maintain its lead in an increasingly competitive market. The model is available now through the OpenAI API and ChatGPT Plus subscriptions.
For developers and businesses currently evaluating AI tools, GPT-5.4’s autonomous workflow capabilities could significantly reduce the need for custom automation pipelines, potentially disrupting the integration platform market.