GPT-5.4 mini
by Impossibl · family gpt-mini · listed Mar 2026RTV
Strong small GPT for coding subagents, quick tool use, and high-volume work
Current rates USD per 1M tokens
Input$0.75
Output$4.50
Cache read$0.075
Cache write—
Against the market
On the record
- Model id
openai/gpt-5.4-mini- Context window
- 400K tokens
- Max output
- 128K tokens
- Input modalities
- text, image
- Output modalities
- text
- Reasoning
- yes
- Tool calls
- yes
- Open weights
- no
- Knowledge cutoff
- Aug 2025
- Released
- 2026-03-17
- Last updated
- 2026-03-17
- Provider docs
- impossibl.com/docs/models
Back of the envelope
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