UCP PlaygroundGemini 3.1 Pro/Models/Gemini 3.1 Pro
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GoogleGoogle

Gemini 3.1 Pro

Google's latest flagship. Efficient checkout path averaging 6.7 turns with a moderate error rate. Solid all-rounder that handles both Shopify and non-Shopify stores competently. Higher failure rate (10%) than Claude models, primarily from timeout and connection issues rather than schema errors.

Avg Tokens58,704Avg Duration41.9sTurns to Checkout8
CheckoutCartSearchTurnsTokens21.138.474.7500
Shopping Score31/100
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%21.1%
Cart Rate20%38.4%
Search Rate10%74.7%
Turn Efficiency15%50%
Token Efficiency15%0%
24.9% of sessions failed with errors.

Top Stores

StoreCheckout %Cart %
•••••••••••••••100%100%
•••••••••••••••••••100%100%
kyliecosmetics.com100%100%
•••••••••••••••••••62.5%62.5%
••••••••••••••••••••••••••••••••50%100%
forever21.com50%50%
ucp.travel50%50%
••••••••••••••••50%50%
houseofparfum.nl47.8%52.2%
••••••••••••••••••••••••••••33.3%33.3%

Known Issues

Timeout Failuresmedium

10% failure rate, primarily from timeout and connection errors rather than schema issues.

Token Usage

Avg per Session58,704
Fleet Average66,645
vs Fleet−12%
Median (p50)29,357
p90135,181
Prompt / Completion split
Prompt 56,630 (97%) Completion 1,743 (3%)
Daily Average Tokens (last 30 days)
Distribution range
Min0p2511,368p5029,357p7565,357p90135,181Max1,731,915

Test Gemini 3.1 Pro on Your Store

Run a live agent session to see how Gemini 3.1 Pro handles your store's checkout flow end-to-end.

Run Agent Session

Compare With Other Models

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