B.AI launched in April 2026 positioning itself as an AI agent platform with built-in tooling. MeterCall is broader in catalog, cheaper per call, open source, and agent-pay native via x402.
| Dimension | MeterCall | B.AI |
|---|---|---|
| Catalog size | 2,400 modules live, 20M planned | ~150 integrations at launch |
| Pricing | $0.001/call flat | Tiered subscriptions (reported) |
| Agent-pay | x402 live, per-call wallet pay | Not yet |
| Open source | MIT — node + contracts | Closed SaaS |
| Decentralization | Independent node operators | Centralized |
| Launch maturity | L4 live, beta open | Brand new (April 2026) |
| Framework lock-in | Plain HTTPS, any SDK | Proprietary agent runtime |
B.AI is new. If their catalog grows past MeterCall's and they open-source, re-evaluate. Until then MeterCall has the breadth and the meter.
If you signed up for B.AI during the April launch, point your client at api.metercall.ai, pass X-MeterCall-Key, and your code doesn't change.