GPT-5.1 vs Gemini 3.0 Pro

Side-by-side comparison of pricing, features, and capabilities

Pricing

Input / 1M tokens
$1.25
$2.00
Output / 1M tokens
$10.00
$12.00
Avg. Cost / 1M
$5.63
$7.00

Specifications

Context Window
128K
2M
Tier
frontier
frontier
Provider
OpenAI
Google

Capabilities

Feature
gpt-5.1
gemini-3.0-pro
text
code
vision
reasoning
long context

Verdict

Best for Cost

gpt-5.1 is 24% cheaper on average

Best for Quality

Both models are in the same performance tier

Best for Long Documents

gemini-3.0-pro has a larger context window (2M)

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