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GPT-6 Luna

OpenAI's cost-efficient GPT-6 model for high-volume workloads such as extraction, summarization, and routing.

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Input price
$0.09–$0.18list $0.10-10%
Output price
$0.45–$0.675list $0.50-10%
Context
1.1M
Max output
128K
157 (#31 of 79)
1388
—
Released
2026-09-22
InputTextImageOutputText

Providers

This model is served by the dedicated providers below. We pick the provider for each request, so provider preferences don’t apply, including a provider named in your request. Prices in USD per 1M tokens. Need a custom setup? Contact [email protected].

Included providers2
  • SuccessTTFT
  • Azure AI FoundryGlobal——
  • OpenAIUnited States——

Pricing

Prices for this model. Each request is billed at these prices, whichever provider serves it.

ItemStandardFlexBatchPriorityPrice
Prompt ≤ 272K tokens
Inputper 1M tokens$0.09list $0.10-10%$0.045list $0.05-10%$0.045list $0.05-10%$0.18list $0.20-10%—
Outputper 1M tokens$0.45list $0.50-10%$0.225list $0.25-10%$0.225list $0.25-10%$0.90list $1.00-10%—
Cache readper 1M tokens$0.009list $0.01-10%$0.0045list $0.005-10%$0.0045list $0.005-10%$0.018list $0.02-10%—
Cache write (5 min)per 1M tokens$0.1125list $0.125-10%$0.056252list $0.0625-10%$0.056252list $0.0625-10%$0.225list $0.25-10%—
Cache write (1 hour)per 1M tokens$0.225list $0.25-10%$0.1125list $0.125-10%$0.1125list $0.125-10%$0.45list $0.50-10%—
Prompt > 272K tokens
Inputper 1M tokens$0.18list $0.20-10%$0.09list $0.10-10%$0.09list $0.10-10%$0.36list $0.40-10%—
Outputper 1M tokens$0.675list $0.75-10%$0.3375list $0.375-10%$0.3375list $0.375-10%$1.35list $1.50-10%—
Cache readper 1M tokens$0.018list $0.02-10%$0.009list $0.01-10%$0.009list $0.01-10%$0.036list $0.04-10%—
Cache write (5 min)per 1M tokens$0.225list $0.25-10%$0.1125list $0.125-10%$0.1125list $0.125-10%$0.45list $0.50-10%—
Cache write (1 hour)per 1M tokens$0.45list $0.50-10%$0.225list $0.25-10%$0.225list $0.25-10%$0.90list $1.00-10%—
Prompt ≤ 272K tokensdecision requests
Inputper 1M tokens————$0.09list $0.10-10%
Cache readper 1M tokens————$0.009list $0.01-10%
Cache write (5 min)per 1M tokens————$0.1125list $0.125-10%
Cache write (1 hour)per 1M tokens————$0.225list $0.25-10%
Prompt > 272K tokensdecision requests
Inputper 1M tokens————$0.18list $0.20-10%
Cache readper 1M tokens————$0.018list $0.02-10%
Cache write (5 min)per 1M tokens————$0.225list $0.25-10%
Cache write (1 hour)per 1M tokens————$0.45list $0.50-10%
decision requests
Outputper 1M tokens————Free
Web searchper request————$0.009list $0.01-10%

Try it

Runs on your balance and is billed like any API request.

Provider preferences don’t apply to this model. Need a custom setup? Contact [email protected].

Accepts images, or paste them in

Try one

The answer streams in here.

Billed by usage

Similar models

Other models with the same output types at a similar price.

  • Better value: more capable, lower price
  • Pareto frontier
  • This model

Capability scores are from Epoch AI’s Epoch Capabilities Index (CC BY 4.0, as of 2026-11-10), which combines dozens of benchmarks with GPT-5 set at 150. epoch.ai/eci

Price: our current input price per 1M tokens in USD, lowest across channels. Dated snapshots and resold copies of the same model are merged into one point; free models are not shown.

Shaded area: capability above and price below the median of all models. Pareto frontier: no other model is both cheaper and more capable.

GPT-6 LunaThis model
157
Input
$0.09–$0.18
Output
$0.45–$0.675
—
Input
$0.0876
Output
$0.5256
—
Input
$0.099
Output
$0.319
—
Input
$0.0803
Output
$0.4818
—
Input
$0.077
Output
$0.22

Human preference ratings are from the LMArena Text Arena (CC BY 4.0, as of 2026-11-09): Elo ratings from blind votes, on a different scale from capability scores. lmarena.ai/leaderboard/text