Migration assistant

Replacing Gemini 3.1 Pro Preview Custom Tools?

Ranked replacement candidates, each shown with exactly what changes if you switch. Same-provider matches surface first because switching cost is lower; capability regressions are flagged in red.

GG
Migrating from

Gemini 3.1 Pro Preview Custom Tools

Google Gemini · Preview
Input: $2/M Output: $12/M Context:
View detail →
#1 RECOMMENDED

Gemini 2.0 Flash

Google Gemini · Gemini 2.0
same provider; 95% cheaper input
View full detail →
What changes if you switch
Field Gemini 3.1 Pro Preview Custom Tools Gemini 2.0 Flash Impact
Input price $2/M $0.1/M Save 95%
Output price $12/M $0.4/M Save 97%
Context window 1M tokens One value not verified
Lifecycle Preview Active Generally available
Other candidates
#2

Gemini 2.5 Flash

Google Gemini
same provider; 85% cheaper input
Details →
Input price: Save 85%Output price: Save 79%Lifecycle: Generally available
#3

Gemini 2.5 Flash-Lite

Google Gemini
same provider; 95% cheaper input
Details →
Input price: Save 95%Output price: Save 97%Lifecycle: Generally available
#4

Gemini 2.5 Pro

Google Gemini
same provider; 38% cheaper input
Details →
Input price: Save 38%Output price: Save 17%Lifecycle: Generally available
#5

Gemini 3 Flash Preview

Google Gemini
same provider; 75% cheaper input
Details →
Input price: Save 75%Output price: Save 75%
Methodology

How candidates are ranked

Candidates are ranked by how much of the source model's profile each one preserves — weighing switching cost (same provider or model family surface first), capability parity (what you keep versus what you'd lose), context window, and pricing direction. A candidate that is itself deprecated is pushed down the list; one that's already retired is never recommended.

Ranking is purely algorithmic — no editorial weighting, no paid placement. Every value is pulled from each provider's own documentation; click any model name to see the source-linked detail.