Call gpt-5.4 through RouterPlex's OpenAI-compatible API — vendor list price, 0% markup, billed per token from a prepaid balance. No subscription required.
curl https://api.routerplex.com/v1/chat/completions \
-H "Authorization: Bearer $ROUTERPLEX_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "gpt-5.4",
"messages": [{"role": "user", "content": "Hello!"}]
}'Works with any OpenAI SDK or tool — just change the base URL. See the quickstart.
Through RouterPlex, GPT-5.4 costs $2.50 per 1M input tokens and $15.00 per 1M output tokens — the vendor list price with 0% markup, billed per token from a prepaid balance you top up from $5.
GPT-5.4 supports a 1M token context window on RouterPlex.
Yes. RouterPlex serves GPT-5.4 through an OpenAI-compatible endpoint at https://api.routerplex.com/v1 — point any OpenAI SDK or tool at that base URL with your RouterPlex key and set model to "gpt-5.4".