Chat completions - premium tier
x402Grade BLast checked 1 hour ago
POST https://agent402.tools/v1/premium/chat/completions
OpenAI-compatible chat completions, premium tier: gpt-5, gpt-6 astra, o3 and o4-mini, claude opus, claude fable 5.1 - paid per call in USDC over x402. Same wire format as /v1/chat/completions with the largest caps (85k chars in, 8192 tokens out).
Price$0.5per model request · paid in USD on Base
Uptime100%
4/4 probes · 720.5 ms
Score72Grade B
Paid usage, 30 days1payers · 3 calls
How to buy
This endpoint takes pay-per-call payments over x402. Call it once without paying to see its live price; any x402 client then pays and retries automatically.
curl -i -X POST "https://agent402.tools/v1/premium/chat/completions"
# HTTP/1.1 402 Payment Required: price, asset and payTo are in the responseRecent checks
| Checked (UTC) | Result | Status | Time | Live price |
|---|---|---|---|---|
| 2026-10-11 11:16 | Valid 402 | 402 | 821 ms | $0.5 |
| 2026-10-11 06:45 | Valid 402 | 402 | 600 ms | $0.5 |
| 2026-10-11 02:15 | Valid 402 | 402 | 811 ms | $0.5 |
| 2026-10-10 21:45 | Valid 402 | 402 | 630 ms | $0.5 |
Receipts
No test purchases yet. Graded test purchases are next on our list; until then every number here comes from unpaid checks.
What a check proves