---
title: "GPT-5.4 API price | RelaySwitch"
canonical: https://relayswitch.io/models/gpt-5.4
generated: 2026-11-15T03:09:17.422Z
source: https://api.relayswitch.io/v1/catalog
base_url: https://api.relayswitch.io/v1
---

# GPT-5.4

GPT-5.4 by OpenAI through the RelaySwitch API: $1.50 per million input tokens, $9.00 per million output tokens. Pay by card or crypto (Card, USDT, USDC, BTC, ETH, SOL). No KYC.

40% under OpenAI's list price

## Price per million tokens

| Input | Cached input | Output |
| --- | --- | --- |
| $1.50 | $0.15 | $9.00 |

OpenAI list price: $2.50 in / $15.00 out.

## Specs

- Model id: `gpt-5.4`
- Developer: OpenAI
- Context window: 1.1M tokens
- Max output: 128K tokens
- Input: text, image
- Released: 2026-03-05

## Call it

```bash
curl https://api.relayswitch.io/v1/chat/completions \
  -H "Authorization: Bearer $RELAYSWITCH_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model": "gpt-5.4", "messages": [{"role": "user", "content": "Hello"}]}'
```

## In JanitorAI, SillyTavern, Chub and Risu

One 2K-in / 300-out turn on GPT-5.4: $0.0057 at today's rate; a long chat resends its history, so the price grows with the context setting.

| App | URL field | Value | Model |
| --- | --- | --- | --- |
| JanitorAI | Proxy URL | https://api.relayswitch.io/v1/chat/completions | gpt-5.4 |
| SillyTavern | Custom Endpoint (Base URL) | https://api.relayswitch.io/v1 | gpt-5.4 |
| Chub | OpenAI Reverse Proxy URL | https://api.relayswitch.io/v1 | gpt-5.4 |
| Risu | URL | https://api.relayswitch.io/v1 | gpt-5.4 |

API key: your sk-relay- key in every app. Ranked by use with this price on every model: https://relayswitch.io/best-models/janitorai, https://relayswitch.io/best-models/sillytavern, https://relayswitch.io/best-models/chub

No app? GPT-5.4 runs as a browser chat with characters, images and video at Unrestrictable, no key to paste: https://unrestrictable.ai/chat?model=gpt-5.4&utm_source=relayswitch.io&utm_medium=site&utm_campaign=model-md

Keys and top-ups: https://app.relayswitch.io/console