📡 api.gripe / API reliability comparisons
OpenAI vs Anthropic: which API is more reliable?
Pre-launch, October 2026: api.gripe’s monitoring hasn’t started, so nothing on this page has numbers yet. Both scores publish the day tracking goes live — measured by us, dated, and never sponsored.
Last reviewed
OpenAI — The GPT model family — chat, embeddings and inference APIs.
Anthropic — The Claude model family — chat, analysis and agent APIs.
Head to head
| Metric | OpenAI | Anthropic |
|---|---|---|
| Reliability score | publishes at launch | publishes at launch |
| Uptime (trailing 90 days) | at launch | at launch |
| p99 latency (trailing 90 days) | at launch | at launch |
| Developer sentiment (trailing 30 days) | at launch | at launch |
Need live status right now? The vendors’ own pages are authoritative: OpenAI status · Anthropic status. Vendor status pages are never an input to api.gripe’s scores.
How this comparison stays fair
Both APIs are measured the same way: identical probes of the public endpoints, identical 90-day uptime and latency windows, identical sentiment window, one fixed weighting — the full methodology publishes with the first scores. Scores on api.gripe are never sponsored: vendors can’t pay to move them, and api.gripe is not affiliated with either company. Every figure that lands here carries its measurement date — nothing stale is shown as current.
Where each API leads
Nothing to report yet, and we won’t invent any: there are no measured differences until tracking starts. From launch this section lists, with dates, where OpenAI beats Anthropic and where Anthropic beats OpenAI — uptime, latency and sentiment, both directions, including “no meaningful difference” when that is the honest answer.
The AI/LLM gripe we hear most while we build: rate limits nobody documented. Both scores will weight the outages developers actually felt, not what a status page admitted.
Get both scores the day they land:
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