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Cheapest GPT-5.6 Luna Pro Inference Providers

Ranks providers by estimated cost using a 1,000-input/500-output token ratio, shown per 1 million total tokens.

OpenAI currently ranks first at $1.333333 / 1M tokens via openai/flex.

Provider options:
5
Ranked:
5
Metric:
Estimated cost / 1M tokens

Cheapest endpoint ranking

Rank providers by
Cheapest GPT-5.6 Luna Pro Inference Providers
RankProvider / routeEstimated cost / 1M tokensSpeed measurementsEndpoint details
#1Provider / route
OpenAIopenai/flex
Estimated cost / 1M tokens$1.333333 / 1M tokensSpeed measurements
500-token response
Insufficient recent data
Response starts
Insufficient recent data
Output speed
Insufficient recent data
Endpoint details
Input price
$0.5 / 1M tokens
Output price
$3 / 1M tokens
Uptime (30 min)
47.00%
Context
1.1M
#2Provider / route
OpenAIopenai
Estimated cost / 1M tokens$2.666667 / 1M tokensSpeed measurements
500-token response
10.87 s
Response starts
6.20 s
Output speed
107.0 tok/s
Endpoint details
Input price
$1 / 1M tokens
Output price
$6 / 1M tokens
Uptime (30 min)
47.00%
Context
1.1M
#3Provider / route
Azureazure
Estimated cost / 1M tokens$2.666667 / 1M tokensSpeed measurements
500-token response
22.33 s
Response starts
20.20 s
Output speed
234.0 tok/s
Endpoint details
Input price
$1 / 1M tokens
Output price
$6 / 1M tokens
Uptime (30 min)
95.42%
Context
1.1M
#4Provider / route
Azureazure/eu
Estimated cost / 1M tokens$2.933333 / 1M tokensSpeed measurements
500-token response
Insufficient recent data
Response starts
Insufficient recent data
Output speed
Insufficient recent data
Endpoint details
Input price
$1.1 / 1M tokens
Output price
$6.6 / 1M tokens
Uptime (30 min)
Insufficient recent data
Context
1.1M
#5Provider / route
OpenAIopenai/priority
Estimated cost / 1M tokens$5.333333 / 1M tokensSpeed measurements
500-token response
Insufficient recent data
Response starts
Insufficient recent data
Output speed
Insufficient recent data
Endpoint details
Input price
$2 / 1M tokens
Output price
$12 / 1M tokens
Uptime (30 min)
47.00%
Context
1.1M

Endpoint data fetched .

GPT-5.6 Luna Pro endpoint guide

How to interpret the Cheapest GPT-5.6 Luna Pro Inference Providers

5 of 5 GPT-5.6 Luna Pro endpoints currently have the published data required for this ranking. OpenAI leads at $1.333333 / 1M tokens via openai/flex. The table keeps unranked routes visible so missing measurements do not look like missing provider availability.

How estimated token cost is ranked

The cheapest ranking uses a 1,000-input/500-output-token ratio and reports the blended result per 1 million total tokens. Because providers can price input and output differently, a workload with a different token ratio may produce a different order.

Compare OpenAI with the next option

OpenAI currently ranks second at $2.666667 / 1M tokens. 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-5.6 Luna Pro has 5 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.