Gemini 3.1 Pro vs GPT-5.4
How Gemini 3.1 Pro (Google) and GPT-5.4 (OpenAI) compare on price and capabilities — and how to use either on anyAInow without a subscription.
Gemini 3.1 Pro
Flagship
GPT-5.4
Balanced
Provider
Google
OpenAI
Best for
Flagship
Balanced
Reads images
Yes
Yes
GPQA Diamond
94.1%
92%
AA Coding Index
68.8%
71.1%
Price
from $20 / 1M
from $30 / 1M
Subscription
None
None
Benchmark source: artificialanalysis.ai, as of 13 Aug 2026. Higher is better; figures are publisher-reported where not independently verified.
Gemini 3.1 Pro or GPT-5.4?
Gemini 3.1 Pro is a flagship-tier model, while GPT-5.4 is balanced-tier. Gemini 3.1 Pro is the more cost-efficient of the two. On the GPQA Diamond reasoning benchmark, Gemini 3.1 Pro leads 94.1% to 92%. On anyAInow you can use either — or run both side by side to see which answers your prompts better — pay-as-you-go with no subscription.