GPT-5.4 nano

GPT-5.4 nano is OpenAI's cheapest GPT-5.4 lane, designed for simple routing, extraction, and bulk automation. It is part of the gpt-nano line, following GPT-5 Nano, which was released on 2025-08-07 with the same 400,000 token context window. It has a context window of 400,000 tokens and a maximum output of 128,000 tokens. Pricing starts at $0.16 per million input tokens and $1.00 per million output tokens, with cached input at $0.016 per million. The weights are not open. It supports reasoning mode, tool calling, and accepts image and text inputs, returning text. Knowledge cutoff is 2025-08-31.

Against GPT-5 Nano: input $0.04 to $0.16, output $0.32 to $1.00, cached input $0.0045 to $0.016.

Range across the hosts that serve it: up to $0.20 per 1M input tokens.

• ·Cheapest GPT-5.4 lane for bulk automation
• ·400k token context window
• ·128k max output tokens
• ·Supports reasoning and tool calling
• ·Accepts image and text inputs

• Reach for it for simple routing
• Reach for it for extraction
• Reach for it for bulk automation

30 hosts serve this model at the price above · the maker's documentation

The registry keeps the six most recent versions of a line. Older ones stay in the file and can be surfaced without a rebuild.

How much does GPT-5.4 nano cost?

Input from $0.16 per million tokens, output $1.00 per million, cached input $0.016 per million.

Does it accept image inputs?

Yes, it accepts image and text inputs, and returns text output.

Are the weights open?

No, the weights are not open.