Start the clock: sign up, copy a key, paste it in, read the reply.
SwiftRelay is a pay-per-token relay for Claude, GPT, Gemini and more. One API host and one key work in whichever client you already use.
- 0:00
Open the account
A username and a password. $0.22 of credit is already in the balance when it opens.
- 0:30
Copy your key
The dashboard hands you a swft_ key; one click puts it on your clipboard.
- 1:00
Paste it into your client
Claude Code, Codex, Gemini CLI or your own SDK, pointed at the API host shown below.
https://api.fastapirelay.com - 1:30
Read the first reply
The answer streams back and the call shows up under Usage with its exact cost.
The whole trip as a single request
Put your key in SWIFT_KEY and run this from any terminal.
curl https://api.fastapirelay.com/v1/chat/completions \
-H "Authorization: Bearer $SWIFT_KEY" -H "Content-Type: application/json" \
-d '{"model":"gpt-6.1-sol","messages":[{"role":"user","content":"Count down from three, then say go"}]}'Three light models to begin with
Prices per 1M tokens.
Anthropic
Claude Haiku 4.5
claude-haiku-4-5-20251001
- Input
- $0.3542
- Output
- $1.69
OpenAI
GPT-6.1 Sol
gpt-6.1-sol
- Input
- $0.1278
- Output
- $0.6389
DeepSeek
DeepSeek V4 Flash
deepseek-v4-flash
- Input
- $0.2639
- Output
- $1.06