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402radar
List

Cheapest x402 routing APIs

21 x402 routing APIs catalogued, ranked by price per call (cheapest first). Updated June 22, 2026.

Top pick80GPT-5.5 Compact Chat x402100% uptime · from $0.0001 – $0.066667/call
BestCheapestMost reliable
# API
1 $0.28* 133 ▼ 50.0% $0.0001 – $0.066667 120 694 ms 80
2 — — $0.0005 – $49 227 192 ms —
3 — — $0.001 1 35 ms —
4 — — $0.001 1 30 ms —
5 $0.09* 39 $0.001 – $0.1 24 1751 ms 28
6 — — $0.001 – $0.05 373 34 ms —
7 $1.96 65 ▼ 40.0% $0.001 – $0.005 5 745 ms 77
8 — — $0.001 1 370 ms —
9 — — $0.003 – $10 12 1752 ms —
10 — — $0.005 – $0.01 3 346 ms —
11 $0.92 125 ▲ 17.6% $0.005 – $0.05 10 2702 ms 80
12 — — $0.005 – $0.01 11 1742 ms —
13 $88.25 6,678 ▲ 19.8% $0.005 – $1 91 276 ms 94
14 — — $0.005 1 38 ms —
15 — — $0.005 – $0.01 2 35 ms —
16 — — $0.005 1 236 ms —
17 — — $0.005 1 109 ms —
18 — — $0.01 1 526 ms —
19 — — $0.01 1 734 ms —
20 — — $0.01 2 991 ms —
21 — — — 1 1249 ms —

FAQ

What is the cheapest x402 routing API?
GPT-5.5 Compact Chat x402 — from $0.0001 – $0.066667 per call.
Which x402 routing API is the most reliable?
GPT-5.5 Compact Chat x402, at 100% measured uptime.
What is the best x402 routing API right now?
GPT-5.5 Compact Chat x402, with the highest 402radar Trust score (80).
How are these x402 routing APIs ranked?
By 402radar Trust — a composite of measured uptime, success rate, /quote latency and price, computed on real traffic and refreshed hourly.