GPT-5.4 Mini Rolling Out to Free Users: First Reasoning Model with Native Computer Use Available Without Paid Subscription

OpenAI·medium signal

OpenAI is rolling out GPT-5.4 mini to Free and Go ChatGPT users via the Thinking feature, making it the first reasoning model with native computer-use capabilities available without a paid subscription. GPT-5.4 mini also serves as automatic fallback for Plus/Pro users when GPT-5.4 Thinking hits rate limits. The full GPT-5.4 supports 1M token context and unifies GPT-5.3-Codex coding with advanced reasoning in a single model.