GPT-5.4 Nano
GPT-5.4 Nano (openai/gpt-5.4-nano) is a multimodal language model from OpenAI on the OceanToken API at $0.20 per 1M input tokens and $1.25 per 1M output tokens, with a 400K-token context window and reasoning, tool calling, structured outputs, image input.
GPT-5.4 nano is the most lightweight and cost-efficient variant of the GPT-5.4 family, optimized for speed-critical and high-volume tasks.
Create an account or sign in to OceanToken.Context window
400K tokens
Input
file + image + text
Output
text
BUILD WITH IT
- Multi-step reasoning
- Tool-using agents
- Structured outputs (JSON)
- Image understanding
Model ID openai/gpt-5.4-nano
Base URL https://api.oceantoken.ai/v1
MAKE IT YOURS
One account. Your next idea.
- Input
- $0.20 / 1M tokens
- Output
- $1.25 / 1M tokens
- Cached input
- $0.02 / 1M tokens
Official price as of October 18, 2026. The console always shows the current price.
Open OceanToken ↗Specs, request sample and alternatives in the docs ↗Frequently asked questions
GPT-5.4 nano is the most lightweight and cost-efficient variant of the GPT-5.4 family, optimized for speed-critical and high-volume tasks.
GPT-5.4 Nano costs $0.20 per 1M input tokens and $1.25 per 1M output tokens. Cached input costs $0.02 per 1M tokens. These are official prices as of October 18, 2026, charged per use to your prepaid balance. The console always shows the current price.
GPT-5.4 Nano has a context window of 400K tokens (400,000 tokens).
GPT-5.4 Nano supports tool calling, structured outputs, image input (vision) and reasoning. It takes file, image and text input and returns text.
Send requests to https://api.oceantoken.ai/v1/chat/completions with the model ID openai/gpt-5.4-nano and your OceanToken API key. The API is OpenAI-compatible, so an OpenAI SDK needs only the base URL https://api.oceantoken.ai/v1 and your key. The Responses API and the Anthropic Messages API (/v1/messages) work too. The same OceanToken API key works for every model your account can use. Full reference: docs.oceantoken.ai.
OceanToken is prepaid. Open Credits in the console, choose an amount and pay by card on Stripe's hosted checkout page (Link works too; Alipay and WeChat Pay are not available). Each top-up is between $10 and $100,000, and your balance updates a few seconds after payment. Have a trial code? Redeem it on the same page.
Purchased credits are valid for 12 months from the date of purchase. Credits from trial codes, promotions or gifts may have a shorter validity. All purchases are final and non-refundable, except where the law requires a refund. Section 6 of the Terms of Service has the details.
Not if the request never ran: a request refused for an insufficient balance or by a safety check, or one whose provider fails before returning any output, is not charged. A video job that fails releases the amount it held. If a request breaks off after the model has started producing output, for example a stream cut off part-way, you pay for the tokens that were processed and generated for it.
There are two ways to buy. Pay-as-you-go is self-serve: sign up, add prepaid credits and use every model in the catalog at its official price. Enterprise customers get agreement pricing based on expected usage: email support@oceantoken.ai.