Surplus IntelligenceOpen Market for Models
Your API calls, routed to the cheapest offer.
Your surplus capacity, sold to the highest bidder.
One API, OpenAI-compatible
Already on OpenAI or OpenRouter? Just change your base URL and cut your inference bill 38%.
1export SURPLUS_API_KEY="inf_..."2 3curl https://api.surplusintelligence.ai/v1/chat/completions \4# was: openrouter.ai/api/v15 -H "Authorization: Bearer $SURPLUS_API_KEY" \6 -H "Content-Type: application/json" \7 -d '{8 "model": "claude-opus-4.8",9 "messages": [{"role": "user", "content": "Hello from Surplus"}],10 "stream": true11 }'Same request. Same SDK. Same models. New base URL. Lower costs.
Buyers pay less for calling AI models.
Sellers turn your API credits into $.
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Buyers
$99$10
1·Buy credits
sk-••••••••
2·Get API key
Claude Opus 4.8
claude-opus-4-8
42%cheaper
in $2.35/M · out $11.76/M
3·Save on API calls
sk-prov-••••
1·Paste provider key
GPT-5.5
gpt-5.5
37%cheaper
in $1.85/M · out $9.20/M
2·List model offers
USDC+$0.62USDC+$1.40
3·Earn USDC