Choosing a payments API for production is one of the few infrastructure decisions that directly affects revenue. A 500 ms spike in your checkout API is a measurable drop in conversion rate. An outage during peak traffic is an emergency that wakes people up at 2 AM.
We ran 90 days of continuous measurement against both Stripe and Braintree's public-facing checkout endpoints, aggregating latency data across multiple probing locations.
The Endpoints Tested
| Provider | Endpoint Tested | Protocol |
|---|---|---|
| Stripe | https://api.stripe.com/v1/ |
HTTPS / HTTP/2 |
| Braintree | https://payments.braintree-api.com/graphql |
HTTPS / HTTP/2 |
Both endpoints were probed every 3 minutes from three regions: US East, EU West, and AP Southeast. Total samples: ~43,200 per endpoint over 90 days.
Latency Comparison (p50 / p95 / p99)
| Metric | Stripe | Braintree |
|---|---|---|
| p50 latency | 142 ms | 198 ms |
| p95 latency | 287 ms | 412 ms |
| p99 latency | 634 ms | 891 ms |
| Max observed | 4,102 ms | 6,890 ms |
| Timeout rate (>5s) | 0.003% | 0.011% |
Stripe leads on every latency percentile, particularly at p99 where the tail is 28% tighter. This matters for checkout flows — the user tapping "Pay Now" is waiting for your p99, not your p50.
Availability Record
| Provider | Reported Uptime | Incidents (90 days) | Longest Outage |
|---|---|---|---|
| Stripe | 99.97% | 2 | 14 min (EU payment processing) |
| Braintree | 99.91% | 5 | 31 min (Vault service degradation) |
Stripe had fewer incidents with faster recovery. Braintree's Vault service (storing tokenized card data) was the reliability weak point — three of five incidents involved vault retrieval latency exceeding 2 seconds.
Webhook Reliability
Webhooks are where the rubber meets the road for event-driven checkout flows (refunds, disputes, subscription renewals).
Stripe Webhooks:
- Delivery guarantee: at-least-once with exponential backoff
- Retry window: up to 72 hours
- Signature verification: HMAC-SHA256 via
Stripe-Signatureheader - Average delivery latency (post-event): 340 ms
Braintree Webhooks:
- Delivery guarantee: at-least-once
- Retry window: up to 7 days
- Signature verification: RSA-SHA256 via HTTP body parsing
- Average delivery latency (post-event): 890 ms
Stripe's webhook delivery is significantly faster and the signature verification model is simpler to implement correctly. Braintree's RSA approach requires parsing the webhook body to extract the signature, which leads to subtle bugs if you're not careful about encoding.
Developer Experience
This is subjective, but it matters for implementation velocity:
| Factor | Stripe | Braintree |
|---|---|---|
| API documentation | ⭐⭐⭐⭐⭐ | ⭐⭐⭐⭐ |
| SDK quality | Excellent | Good |
| Error messages | Precise, actionable | Generic, verbose |
| Test mode | Full sandbox parity | Full sandbox parity |
| Dashboard | Best-in-class | Functional |
| Community resources | Extensive | Moderate |
Stripe's error messages deserve special mention. When a charge fails, you get a decline_code like insufficient_funds or card_velocity_exceeded. Braintree returns processor-level codes that require a lookup table to decode.
Our Recommendation
Choose Stripe if:
- Conversion rate optimization is critical (lower p99 latency)
- You're building with Node.js, Python, or Ruby (best SDK support)
- You need global payment methods (Klarna, Afterpay, etc.)
Choose Braintree if:
- You're already in the PayPal ecosystem
- You need PayPal as a first-class checkout option
- Your existing merchant account is with a bank that has Braintree relationships
For greenfield projects, Stripe is the default choice for good reason. The latency advantage, superior documentation, and webhook developer experience add up to meaningful shipping velocity.
Methodology: Latency measured as total wall-clock time from TCP connection open to final byte received, using Node.js fetch with AbortSignal.timeout(10000). Measurements exclude DNS resolution time (separate CDN-resolved cache).