The company bills API users based on the number of tokens that its LLMs process while generating a prompt response. A token is a unit of data that comprises a few letters or characters. OpenAI says ...

While OpenAI is bringing GPT-5.4 to its API and its AI-powered coding tool, Codex, it’s rolling out its reasoning model, ...

OpenAI's new GPT-5.4 clobbers humans on pro-level work in tests - by 83% ...

Microsoft's Phi-4-reasoning-vision-15B uses careful data curation and selective reasoning to compete with models trained on ...

In keeping with its recently accelerated release cadence, OpenAI has shipped GPT-5.4 (including GPT-5.4 Thinking and GPT-5.4 Pro). This update comes at a critical time, as recent events have led some ...

See how Microsoft Dragon Copilot unifies clinical intelligence, workflows, and partner AI to reduce burden and scale care. Learn more.

GPT-5.4 is billed as "our most capable and efficient frontier model for professional work." ...