Model page
GPT-5.4 mini
Higher-capability GPT-5.4 mini for high-volume coding, computer use, and subagent workflows.
Key dates
We use concrete dates and keep them consistent across the site.
Capability
Intelligence
High
Capability
Speed
Fast
Capability
Context window
400,000 tokens
Capability
Max output
128,000 tokens
Capability
Knowledge cutoff
August 31, 2025
API
Supported endpoints
v1/chat/completions · v1/responses · v1/realtime · v1/assistants · v1/batch
Modalities
Input and output
Input: Text, Image
Output: Text
Features
Availability notes
Cached input: $0.075 / 1M tokens · Web search, file search, image generation, code interpreter, hosted shell, apply patch, skills, computer use, MCP, and tool search supported · Fine-tuning not supported; distillation supported
ChatGPT
GPT‑4o retirement (ChatGPT)
OpenAI is retiring GPT‑4o inside ChatGPT on February 13, 2026. This does not automatically imply API removal.