UCP PlaygroundGPT-6 Luna/Models/GPT-6 Luna
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OpenAIOpenAI

GPT-6 Luna

OpenAI's low-cost GPT-6 tier (22 Sep 2026; about $0.10/$0.50 per M tokens). Newly added: Playground benchmark metrics are still being gathered.

Avg Tokens53,646Avg Duration19.7s
CheckoutCartSearchTurnsTokens08.31005050
Shopping Score27/100
Weak

Scores computed from real agent sessions against live UCP-enabled stores. Not estimated — every data point is from an actual tool call, checkout attempt, and store response.

Shopping Score Breakdown

Checkout Rate40%0%
Cart Rate20%8.3%
Search Rate10%100%
Turn Efficiency15%50%
Token Efficiency15%50%

Top Stores

StoreCheckout %Cart %
godiva.com0%0%

Known Issues

Metrics Pendinglow

GPT-6 Luna was recently added; its Playground benchmark metrics are still being gathered.

Token Usage

Avg per Session53,646
Fleet Average74,927
vs Fleet−28%
Median (p50)38,865
p9098,988
Prompt / Completion split
Prompt 52,969 (99%) Completion 678 (1%)
Daily Average Tokens (last 30 days)
Distribution range
Min5,356p2513,173p5038,865p7598,558p9098,988Max119,269

Test GPT-6 Luna on Your Store

Run a live agent session to see how GPT-6 Luna handles your store's checkout flow end-to-end.

Run Agent Session

Compare With Other Models

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