Model releaseLimited global significanceConfirmed confidence
OpenAI releases GPT-4.1
A maintenance update to the GPT-4 architecture, with modest gains on everyday tasks and better API cost control.
What happened
Event details
GPT-4.1 is a maintenance update to the GPT-4 architecture, focused on modest improvements to everyday-task performance and API cost control. OpenAI released the closed-source model on April 14, 2025; the parameter count is undisclosed and it is an autoregressive Transformer. The primary source is "Introducing GPT-4.1 in the API."
Assessment
Why it matters
Rated on the impact-v1 six-axis scale: technical 2/5, market 2/5, ecosystem 2/5, policy & social 1/5, scope 3/5, durability 2/5.
45/100Global significance score. Regional effects are recorded only when the evidence supports a meaningful difference.