GPT 5.1 API pricing across providers

Price per generation

Run it

curl -X POST https://ellisekiz.ai/api/v1/generations \
  -H "Authorization: Bearer esk_..." \
  -H "Content-Type: application/json" \
  -d '{
    "model": "openai-gpt-5-1",
    "prompt": "your prompt"
  }'

Omit provider and the cheapest offer wins; add it to pin one. Full reference in the docs.

Questions

Which provider is cheapest for GPT 5.1?

Atlas Cloud at $0.0001 per generation. ElliSekiz routes to it automatically unless you pin a provider yourself.

How much does GPT 5.1 cost on ElliSekiz?

Exactly what the provider charges — $0.0001 per generation at the cheapest route. Usage is billed 1:1 from a prepaid USD balance with no markup and no subscription; failed generations are free.

Can I choose the provider for GPT 5.1?

Yes. Send "provider" with the API request, pin one per model in your account settings, or leave it to the router, which picks the cheapest available offer.

Can I use my own Atlas Cloud API key?

Yes. Store your provider keys in your ElliSekiz account and generations run on your own upstream account — currently with zero platform fee.