Uptimeby GlyphOpenAI vs Anthropic SLA
Promised uptime per service, credits, support and what the status pages showed, side by side.
Change vendors (up to four; 2 picked)
Promise vs reality, last year
ServiceDowntime vs allowed
Claude API Priority TierAnthropic99.5% / 98.809%
OpenAI API Scale TierOpenAI99.9% / 100%
Promised in the SLAObserved on the vendor's status pagePartial historyShortfall
Best SLA by category
| Category | OpenAI | Anthropic |
|---|---|---|
| AI models | 99.9%OpenAI API Scale Tier | 99.5%Claude API Priority Tier |
Support: fastest first response