Ten million free credits β one key in front of every model
MarsAI is a routing layer: one base URL that speaks OpenAI and Anthropic, so your SDKs keep working and the model behind the call changes without touching your code. New accounts start with 10M free credits and no card.
Three steps
- Register at MarsAI and verify your email.
- Open Billing and apply the code
ED911CDB8271for 5M more. - Install the CLI β
npm install -g @mars_ai/marscli@latestβ then runmarsand sign in with the device code.
Two details that save you a support ticket
- Free-credit accounts run through the CLI. An API key unlocks the SDKs.
- Free credits always burn first, so a paid plan tops up instead of replacing them. Their plans run $5 for 24 hours, $18 for 7 days, $32 for 30 days.
Every referral link lives here β drop yours in the replies, grab one from there.
One key, every model β and the first ten million credits are free.


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