---
title: "AI / LLM APIs Uptime & Reliability"
description: "30-day and 90-day uptime rankings for the largest AI / LLM APIs providers. Independent measurement, no provider affiliation."
url: https://uptimeproject.org/category/ai/
built: 2026-11-06T12:58:15.145Z
---

# AI / LLM APIs Reliability Rankings

All 8 AI / LLM APIs providers ranked by 30-day availability. Independent measurement, no provider affiliation. Refreshed on every page load.

AI / LLM APIs services ranked by 30-day availability
| Rank | Provider | Status | 7d | 30d availability | 30d downtime | 90d |
| --- | --- | --- | --- | --- | --- | --- |
| Tied for 1 | [Anthropic](https://uptimeproject.org/service/anthropic/) | Operational | 100.00% | 100.00% | 0 min | 99.99% |
| Tied for 1 | [Cohere](https://uptimeproject.org/service/cohere/) | Operational | 100.00% | 100.00% | 0 min | 99.99% |
| Tied for 1 | [Google Gemini API](https://uptimeproject.org/service/google-gemini/) | Operational | 100.00% | 100.00% | 0 min | 100.00% |
| Tied for 1 | [Groq](https://uptimeproject.org/service/groq/) | Operational | 100.00% | 100.00% | 0 min | 100.00% |
| Tied for 1 | [Mistral AI](https://uptimeproject.org/service/mistral/) | Operational | 100.00% | 100.00% | 0 min | 99.99% |
| Tied for 1 | [OpenAI](https://uptimeproject.org/service/openai/) | Operational | 100.00% | 100.00% | 0 min | 100.00% |
| Tied for 1 | [Perplexity API](https://uptimeproject.org/service/perplexity/) | Operational | 100.00% | 100.00% | 0 min | 100.00% |
| Tied for 1 | [xAI Grok API](https://uptimeproject.org/service/xai-grok/) | Operational | 100.00% | 100.00% | 0 min | 99.99% |

## What does this measure?

Independent probes in five locations measure each service at per-check cadences: HTTP every minute, DNS every five minutes, TLS once an hour, storage every five to ten minutes. A minute is "up" only when a strict majority of reporting probes vote up; minutes with fewer than three reporting probes are excluded from the denominator. The 30-day availability above is the share of measured minutes flagged "up". Read the [full methodology](https://uptimeproject.org/methodology/) .