OpenAI: GPT-5.4 Nano

openai/gpt-5.4-nano — available through the Autonomous Relay Agents API, served by OpenAI.

OpenAI: GPT-5.4 Nano has a 400,000-token context window and costs $0.20 per million input tokens and $1.25 per million output tokens, at the provider's list price on your own key.

Context length: 400,000 tokens
Input: $0.20 per M
Output: $1.25 per M
Served by: openai
Input modalities: file, image, text

Variants

The same model under another model id, priced or limited differently. Call it by its id; prices are per million tokens.

Variant	Model id	Context	Input	Output
OpenAI: GPT-5.4 Nano (batch)	openai/gpt-5.4-nano:batch	400,000	$0.10 per M	$0.625 per M

This is a BYOK-only model: requests use your own provider key. Prices shown are the provider's list prices.

Call it

Any OpenAI-compatible client works: change the base URL and send this model id.

curl https://autonomousrelay.com/v1/chat/completions \
  -H "Authorization: Bearer $AUTONOMOUS_RELAY_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model": "openai/gpt-5.4-nano", "messages": [{"role": "user", "content": "Hello"}]}'

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