Speed and data depth get all the attention in scraper benchmarks, but for anyone running production pipelines the number that actually matters is reliability: what percentage of requests come back with correct, complete data — and how consistently, day after day. A 99.9% success rate and a 95% success rate sound close, but at a million requests that's the difference between 1,000 and 50,000 failed pulls.
This post ranks the same eight providers from our performance comparison, but on the axes that decide reliability: success rate, uptime, block/CAPTCHA handling, retry logic and proxy quality. Competitor figures are from published AIMultiple and Proxyway benchmarks; Asgard's are self-reported production metrics, noted as such.
At a glance
| Provider | Success rate | Proxy pool | Retry / anti-block | Reliability best for |
|---|---|---|---|---|
| Bright Data | 99.98% | 150M+ residential | Auto-retry + unblocker | Highest raw success rate |
| Asgard | 99.99% | Residential, Amazon-tuned | Auto-retry + sponsored-aware | Keyword rank tracking & buybox |
| Oxylabs | ~99.9% | 100M+ residential | Auto-retry + AI parser | Enterprise SLAs |
| Decodo (Smartproxy) | ~99.5% | 115M+ residential | Auto-retry | Reliable at high frequency |
| Zyte | ~99% | Residential + datacenter | Smart ban detection | Reliability at massive scale |
| Nimbleway | ~99% | Residential | Auto-retry | Localized consistency |
| Apify | Varies by actor | Bring-or-buy proxies | Actor-dependent | Configurable pipelines |
| ScraperAPI | ~98% | Residential + datacenter | Auto-retry + rotation | Hands-off retries |
What "reliability" actually means for a scraper
Uptime of the API endpoint is only half the story. A scraper can be "up" and still hand you garbage. Real reliability is the product of four things:
- Success rate — the share of requests that return complete, correctly parsed data, not just an HTTP 200 with a CAPTCHA page inside.
- Block & CAPTCHA handling — how well it survives Amazon's anti-bot defenses without you noticing.
- Retry logic — whether failed or partial responses are automatically retried before they reach you.
- Proxy quality — residential IPs at scale hold up far better than datacenter ranges Amazon flags quickly.
Why success rate beats speed for production
A fast scraper with a 95% success rate forces you to build your own retry queue, dedupe layer and alerting — because 1 in 20 pulls is wrong or missing. A slightly slower scraper at 99.9% lets you trust the data as it lands. For dashboards, repricers and rank trackers that make automated decisions, that trust is worth more than a second of latency.
Provider breakdown
Bright Data — highest raw success rate
Posts the best measured success rate in the benchmarks at 99.98%, backed by a 150M+ residential proxy network and a built-in Web Unblocker that handles CAPTCHAs and fingerprinting automatically. Enterprise-grade uptime SLAs make it the safest choice when a missed request is expensive — the trade-off is cost and its slower max-depth mode.
Asgard — consistent rank & buybox pulls
Amazon-specific rather than a general proxy network, with a 99.99% validated success rate under 100–200 concurrent requests. Its differentiator on reliability is an auto-retry mechanism purpose-built to recapture the sponsored placements most scrapers silently drop, so rank and buybox data stays complete rather than partially populated. Uses residential IPs tuned for Amazon and locks zip code as a control variable so results are reproducible.
Oxylabs — enterprise SLAs
A 100M+ residential pool with ~99.9% success rates and formal enterprise uptime SLAs. Automatic retries plus AI-assisted parsing (OxyCopilot) reduce the chance a layout change quietly breaks your extraction. A strong pick when procurement needs a contractual reliability guarantee.
Decodo (Smartproxy) — reliable at high frequency
A 115M+ residential network with ~99.5% success and automatic retries, holding up well under the constant polling that price and rank monitoring demand. Combined with its low latency, it's a dependable choice for high-frequency jobs.
Zyte — reliability at massive scale
Combines residential and datacenter proxies with smart ban detection that automatically escalates to tougher proxy types when Amazon pushes back. Around 99% success while staying the cheapest at volume, so reliability doesn't collapse when you scale into the millions of requests.
Nimbleway — localized consistency
Residential proxies with zip-code-level targeting and automatic retries, keeping localized pulls consistent across regions. Reliable for geo-specific collection; throughput is the main limit.
Apify — configurable pipelines
Reliability depends heavily on the chosen actor and proxy configuration — you can bring your own proxies or buy Apify's. Well-built actors are dependable, but consistency is on you to configure, which is powerful for developers and risky for set-and-forget use.
ScraperAPI — hands-off retries
Automatically handles IP rotation, header management and retries with a mix of residential and datacenter proxies, landing around 98% success. The appeal is simplicity: it retries and rotates without configuration, though raw success trails the residential-first enterprise providers.
Best fit by reliability need
- Mission-critical, missed requests are costly — Bright Data or Oxylabs, for the highest success rates and formal SLAs.
- Complete rank & sponsored data every pull — Asgard, whose retries are built specifically to avoid dropped placements.
- High-frequency monitoring — Decodo, for consistency under constant polling.
- Reliability that survives massive scale — Zyte, with ban detection and proxy escalation.
- Hands-off with minimal setup — ScraperAPI's automatic retry and rotation.
Frequently asked questions
What's a good success rate for an Amazon scraper? Anything below ~98% starts to hurt in production because you have to build your own retry and validation layer. The best residential-first providers sit at 99.5–99.98%.
Does uptime equal reliability? No. An endpoint can report 100% uptime while returning CAPTCHA pages or partial data. What matters is the validated success rate — complete, correctly parsed responses — not just that the API answered.
Why do residential proxies matter for reliability? Amazon flags datacenter IP ranges quickly, so scrapers leaning on them see success rates drop under load. Large residential pools blend in with real traffic and hold up far better at scale.
Which is most reliable for rank tracking? Rank data is easy to get partially wrong — dropped sponsored slots, wrong location. Asgard's sponsored-aware retries and locked zip code are built specifically to keep those pulls complete and reproducible.
The only true reliability test is your own ASINs and keywords over several days. Asgard offers a free API key for that: