ChatGPT free tier just got better with GPT-5.4 mini and subagent features

SUMMARY

AI Generated Content
  • OpenAI launches GPT-5.4 Mini, a faster, free AI model.
  • GPT-5.4 Mini runs over twice as fast, nearing GPT-5.4 performance on benchmarks.
  • "Subagent" functionality lets Mini assist complex tasks via API.
AD
AD