Buy Inference

One API key, every model - routed to the cheapest healthy seller.

$0.00

Available to spend

Live on the marketplacelast 24h

Live market data will appear here.

Your provider preferences

Priority provideroptional

The router will use this key first, then fallback to the marketplace if this key has errors.

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Final fallbackoptional

The router will use this key as a final fallback if the marketplace has no healthy sellers for the model you request.

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Quickstart

Make your first request after signing in & get routed to the cheapest offer on the market

Use in

Select your model

1export SURPLUS_API_KEY="inf_..."2 3curl https://www.surplusintelligence.ai/api/inference/v1/chat/completions \4  -H "Authorization: Bearer $SURPLUS_API_KEY" \5  -H "Content-Type: application/json" \6  -d '{7    "model": "claude-opus-4.8",8    "messages": [{"role": "user", "content": "Hello from Surplus"}],9    "stream": true10  }'