{
  "as_of": "2026-10-22",
  "scope": "Public operator documentation only; not an independent billing test. Not stated means absent from the pages reviewed, not proof that no policy exists. A listing does not endorse a relay.",
  "entries": [
    {
      "gateway": "OpenRouter",
      "billing_model": "prepaid",
      "minimum_topup": "Not stated on reviewed FAQ",
      "topup_fee": "Credit-purchase fee applies; amount not extractable from reviewed FAQ",
      "credit_expiry": "May expire after one year; contractual right, not a guaranteed grace period",
      "refunds": "Unused credit: request within 24 hours; platform fees and crypto payments non-refundable",
      "sources": [
        "https://openrouter.ai/docs/faq"
      ],
      "checked_on": "2026-10-22"
    },
    {
      "gateway": "Vercel AI Gateway",
      "billing_model": "prepaid",
      "minimum_topup": "Not stated on reviewed pricing page",
      "topup_fee": "0% token markup",
      "credit_expiry": "Purchased-credit expiry not stated on reviewed page; free monthly credit is separate",
      "refunds": "Not stated on reviewed pricing page",
      "sources": [
        "https://vercel.com/docs/ai-gateway/pricing"
      ],
      "checked_on": "2026-10-22"
    },
    {
      "gateway": "RouterPlex",
      "billing_model": "prepaid",
      "minimum_topup": "Card $5; crypto $15",
      "topup_fee": "0% top-up fee (operator-stated)",
      "credit_expiry": "PAYG credit never expires; optional plans impose separate spend windows",
      "refunds": "Not stated on reviewed billing/pricing pages",
      "sources": [
        "https://routerplex.com/pricing.md",
        "https://docs.routerplex.com/billing"
      ],
      "checked_on": "2026-10-22"
    },
    {
      "gateway": "onomeo",
      "billing_model": "prepaid",
      "minimum_topup": "$5",
      "topup_fee": "No separate top-up fee stated; payment amount becomes balance",
      "credit_expiry": "Balance never expires; enhanced free-call quota lasts 35 days after payment",
      "refunds": "Payments are not refunded",
      "sources": [
        "https://onomeo.com/pricing",
        "https://onomeo.com/integrations#docs"
      ],
      "checked_on": "2026-10-22"
    },
    {
      "gateway": "Standard Compute",
      "billing_model": "subscription",
      "minimum_topup": "N/A: plans from $19/month",
      "topup_fee": "N/A: subscription, not a credit purchase",
      "credit_expiry": "Monthly compute budget; requests stop at budget until renewal/upgrade; rollover not stated on reviewed page",
      "refunds": "7-day fair refund: cancel and pay for usage",
      "sources": [
        "https://standardcompute.com/pricing"
      ],
      "checked_on": "2026-10-22"
    },
    {
      "gateway": "INFRO",
      "billing_model": "byok",
      "minimum_topup": "N/A: providers bill the customer directly",
      "topup_fee": "0% markup on model spend; software subscription separate",
      "credit_expiry": "N/A at gateway; each provider sets its own credit terms",
      "refunds": "Provider credit refunds follow provider terms; software refunds not reviewed",
      "sources": [
        "https://infro.io/llms.txt"
      ],
      "checked_on": "2026-10-22"
    }
  ]
}