Model
GPT-5.4-mini
A lightweight model released by OpenAI, positioned as a cost-efficient inference-oriented variant within the GPT model family.
Source Articles
Stop One Customer from Blowing Up Your OpenAI Bill: Per-Customer Cost ControlOct 13Is Cranking Up Reasoning Effort Worth It? 1,800 Test Runs Across 4 Models Give the AnswerOct 12I Planted 962 Typos to Test AI Verbatim Quoting — Not One Was 'Corrected.' The Real Failures Were All About Sentence BoundariesOct 11