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Most Reliable GPT-5 Inference Providers

Ranks providers by the uptime OpenRouter measured during the latest 30-minute window.

OpenAI currently ranks first at 96.56% via openai/default.

Provider options:
3
Ranked:
2
Metric:
Uptime (last 30 min)

Highest uptime endpoint ranking

Most Reliable GPT-5 Inference Providers
RankProvider / routeUptime (last 30 min)Speed measurementsEndpoint details
#1Provider / route
OpenAIopenai/default
Uptime (last 30 min)96.56%Speed measurements
500-token response
10.12 s
Response starts
2.43 s
Output speed
65.0 tok/s
Endpoint details
Input price
$1.25 / 1M tokens
Output price
$10 / 1M tokens
Uptime (30 min)
96.56%
Context
400K
#2Provider / route
Azureazure
Uptime (last 30 min)89.37%Speed measurements
500-token response
10.46 s
Response starts
0.84 s
Output speed
52.0 tok/s
Endpoint details
Input price
$1.25 / 1M tokens
Output price
$10 / 1M tokens
Uptime (30 min)
89.37%
Context
400K
Provider / route
Azureazure/swedencentral
Uptime (last 30 min)Insufficient recent dataSpeed measurements
500-token response
16.40 s
Response starts
3.90 s
Output speed
40.0 tok/s
Endpoint details
Input price
$1.38 / 1M tokens
Output price
$11 / 1M tokens
Uptime (30 min)
Insufficient recent data
Context
400K

Endpoint data fetched .

GPT-5 endpoint guide

How to interpret the Most Reliable GPT-5 Inference Providers

2 of 3 GPT-5 endpoints currently have the published data required for this ranking. OpenAI leads at 96.56% via openai/default. The table keeps unranked routes visible so missing measurements do not look like missing provider availability.

How recent uptime is ranked

The reliability ranking uses the published 30-minute endpoint uptime measurement. This short operational window can reveal current instability, but it is not a service-level agreement or a substitute for longer-term availability monitoring.

Compare OpenAI with the next option

Azure currently ranks second at 89.37%. Compare that gap with input and output price, response-start time, output speed, 30-minute uptime, context length, and the exact route before deciding whether first place is meaningful for your workload.

Use the route, not only the provider name

GPT-5 has 3 published provider options, and performance data is matched to each exact OpenRouter routing tag. Different quantization, context, regional deployment, or provider configuration can change price and behavior even when the underlying model name is identical.