DEEP REASONING · OpenAI
GPT-5.4 Pro
GPT-5.4 Pro is a reasoning, tool-using model from OpenAI in the GPT family, living in The High Peaks (deep reasoning). It reads text, files and images and writes text, with a 1.05M-token context window and up to 128K tokens of output. On OpenRouter it costs $30.0 per million input tokens and $180.0 per million output tokens.
See GPT-5.4 Pro in 3DOpen in the WorktableView on OpenRouter
Specifications
- Provider
- OpenAI
- Family
- GPT
- Province
- The High Peaks
- Context window
- 1.05M tokens
- Maximum output
- 128K tokens
- Input / 1M tokens
- $30.0
- Output / 1M tokens
- $180.0
- Accepts
- text, files, images
- Produces
- text
- Reasoning
- Yes
- Tool use
- Yes
- Added to OpenRouter
- 2026-03-05
- Model ID
openai/gpt-5.4-pro- Price history
- —All recorded prices
From the 2026-10-24 catalog snapshot. Prices are US dollars per million tokens.
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