OpenAI
GPT-5.4
Maximize your workflow efficiency with GPT-5.4 API—automate processes, enhance productivity, and achieve faster results.
Pricing
| Billing unit | UniRoute | Market |
|---|---|---|
| Input | $0.70 | $2.50 |
| Output | $5.60 | $15.00 |
per 1M tokens
About this model
GPT-5.4 API includes two powerful models: GPT-5.4 Thinking API for deep reasoning and complex workflows, and GPT-5.4 Pro API for high-performance, large-scale tasks. These models cater to different needs, offering enhanced capabilities for both professional analysis and real-time, high-demand applications.
Deep dive
What GPT-5.4 Models Include: GPT-5.4 Thinking API and GPT-5.4 Pro API
GPT-5.4 API includes two powerful models: GPT-5.4 Thinking API for deep reasoning and complex workflows, and GPT-5.4 Pro API for high-performance, large-scale tasks. These models cater to different needs, offering enhanced capabilities for both professional analysis and real-time, high-demand applications.
GPT-5.4 Thinking API
GPT-5.4 Thinking API is designed for complex reasoning tasks that require long-term context and the ability to plan actions over time. It excels at multi-step reasoning, problem-solving, and generating in-depth analysis. Ideal for professional tasks that demand dynamic decision-making, GPT-5.4 Thinking API allows users to get highly accurate, context-aware responses even for intricate problems. It is especially useful in fields like research, consulting, and education, where models need to maintain and adjust context over extended interactions to provide meaningful and detailed output. Teams building longer-horizon reasoning workflows on GPT-5.4 Thinking may also want to evaluate <a href="https://uniroute.dev/gpt-5-6" rel="dofollow">the newer GPT-5.6 API</a>, which introduces a tiered family—Sol for frontier intelligence, Terra for balanced everyday work, and Luna for fast high-volume usage—so you can match the variant to each stage of your pipeline.
GPT-5.4 Pro API
GPT-5.4 Pro API is the performance-focused variant of GPT-5.4, designed to tackle highly demanding tasks that require maximum speed and computational resources. It handles large-scale data processing, real-time decision-making, and high-volume task automation more efficiently. GPT-5.4 Pro API is ideal for enterprise-level applications, where low latency and high throughput are essential. This version provides faster execution speeds and enhanced accuracy, making it the best fit for scenarios requiring high-performance processing, such as AI-driven applications, automated systems, and complex data analysis.
Call it with one request
Works with the OpenAI SDK — just change the base URL.
curl https://api.uniroute.dev/v1/chat/completions \
-H "Authorization: Bearer $UNIROUTE_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "gpt-5-4",
"messages": [{ "role": "user", "content": "Hello!" }],
"stream": true
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