StarAPI

gemini-3.1-pro vs gemini-3.1-pro-preview

	gemini-3.1-pro	gemini-3.1-pro-preview
Providers	Google	Google
Input $/M	$2.00	$2.00
Output $/M	$12.00	$12.00
Output multiplier	×6.00	×6.00
Context window	1M tokens	1M tokens
Intelligence index	—	36.7
Coding index	—	68.8

What the numbers mean

Input pricing is close — 1.00× apart — so the decision should come down to measured quality on your own evaluation set rather than headline cost.

Tags: gemini-3.1-pro — Chat, Reasoning, Coding, Vision · gemini-3.1-pro-preview — Chat, Reasoning, Coding, Vision

Code

from openai import OpenAI
client = OpenAI(base_url="https://starseaapi.com/v1", api_key="sk-...")

# gemini-3.1-pro
client.chat.completions.create(model="gemini-3.1-pro", messages=[{"role":"user","content":"Hi"}])

# gemini-3.1-pro-preview
client.chat.completions.create(model="gemini-3.1-pro-preview", messages=[{"role": "user", "content": "Hi"}])

Compare