OpenAI
LLM
Medium
Closed weights
GPT-5.4 mini
240 days since OpenAI announced it ·
GPT-5.4 mini is a closed-weights LLM from OpenAI, announced 17 Mar 2026. It costs $0.75 per 1M input tokens and $4.50 per 1M output tokens. Its context window is 400K tokens.
- Input
- $0.75
- per 1M tokens
- Cache write
- —
- per 1M tokens
- Cache read
- $0.07
- per 1M tokens
- Output
- $4.50
- per 1M tokens
- Context window
- 400K
- tokens
- Parameters
- —
- not disclosed
- Announcement
- openai.com/index/introducing-gpt-5-4-mini-and-nano
- Docs
- developers.openai.com/api/docs/models/gpt-5.4-mini
Our coverage
We haven’t written about GPT-5.4 mini yet.
OpenAI · Medium
closed weightsA new one every ~75 days — due in ~58d.
- GPT-6.1 Terra +27d
- GPT-6.1 Sol +7d
- GPT-6 Sol +75d
- GPT-5.6 Terra +0d
- GPT-5.6 Sol +114d
- GPT-5.4 mini +222d
- GPT-5 mini
More from OpenAI
All modelsFacts last updated , from OpenAI’s own pages.