gpt-5.4

openaimodel ID gpt-5.4-63%63% OFF

gpt-5.4 costs $0.925 per million input tokens and $5.55 per million output tokens through the KoRouter API — 63% below OpenAI's official rate, pay as you go with credits.

Context window1.1M input tokens
Input modalitiestext, image, file
Output modalitiestext

Call it in one request

curl · gpt-5.4

curl https://korouter.ai/v1/chat/completions \
  -H "Authorization: Bearer sk-your-key" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "gpt-5.4",
    "messages": [{ "role": "user", "content": "Hello" }]
  }'

Replace sk-your-key with a key from the console. Model IDs are bare names — see the docs and per-tool setup guides.

Supported parameters

max_tokensmax_completion_tokensreasoningreasoning_effortinclude_reasoningtoolstool_choiceparallel_tool_callsresponse_formatstructured_outputs

More models

gpt-5.6-sol gpt-5.5 gpt-5.6-terra gpt-6-astra gpt-image-2 claude-fable-5.1 deepseek-v4-flash claude-opus-5

Prices use the live billing catalog · live availability · all models