OpenAI: GPT-5.4 Pro.
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...
No self-host path — closed weights.
OpenAI: GPT-5.4 Pro's weights aren't published. Use it via the access providers below.
Cheapest hosted endpoints.
Frequently asked.
How do I run OpenAI: GPT-5.4 Pro?
Where can I access OpenAI: GPT-5.4 Pro?
How much does it cost to run OpenAI: GPT-5.4 Pro?
Is OpenAI: GPT-5.4 Pro open-source or proprietary?
What it costs per month across providers.
Estimate your monthly bill for OpenAI: GPT-5.4 Pro across every host that publishes per-token pricing. Slide your token volumes; the chart + table re-rank cheapest-first.
Cheapest provider on the left.
Total monthly cost — input + output tokens combined.