GPT-5.4 Proon Krater.ai
GPT-5.4 Pro is OpenAI's most advanced model, building on GPT-5.4's unified architecture with enhanced reasoning capabilities for complex, high-stakes tasks. It features a 1M+ token context window (922K input, 128K
Released March 5, 2026
Specifications
GPT-5.4 Pro at a glance
Context
1.1M tokens
Max output
128K tokens
Input
Text, Image, File
Output
Text
Input price
$30.00 / 1M
Output price
$180.00 / 1M
Capabilities
What it is good at
Catalog capabilities
- Accepts image input
- Generates text responses
- Supports tool calling
- Supports structured outputs
Good for
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Compare GPT-5.4 Pro
GPT-5.4 Pro vs GPT-5 Pro
GPT-5 Pro is OpenAI’s most advanced model, offering major improvements in reasoning, code quality, and user experience.
Open comparisonGPT-5.4 Pro vs GPT Chat Latest
GPT Chat Latest points to OpenAI's stable API alias chat-latest that always resolves to the latest Instant chat model used in ChatGPT. As OpenAI rolls out new Instant model updates
Open comparisonGPT-5.4 Pro vs o3 Pro
The o-series of models are trained with reinforcement learning to think before they answer and perform complex reasoning.
Open comparisonFAQ
Questions about GPT-5.4 Pro
Clear answers based on the model catalog and Krater access.
Use GPT-5.4 Pro in your API
Connect with Krater's unified API.