Gemini 3.1 Pro vs GPT-5.6 Sol
Side-by-side benchmark comparison across coding, math, reasoning, speed, and pricing.
GPT-5.6 Sol by OpenAI wins on 6 of 9 benchmarks against Gemini 3.1 Pro by Google, which leads on 1. This head-to-head comparison covers coding, math, reasoning, speed, and pricing metrics from our benchmark data.
Category-by-Category Breakdown
General Intelligence: In general intelligence, GPT-5.6 Sol scores 47.1 on AA Intelligence Index compared to Gemini 3.1 Pro's 30.4.
Coding: In coding, GPT-5.6 Sol scores 77.4 on AA Coding Index compared to Gemini 3.1 Pro's 68.8.
Reasoning: In reasoning, Gemini 3.1 Pro scores 94.4% on GPQA Diamond compared to GPT-5.6 Sol's 91.9%, while GPT-5.6 Sol scores 50.5 on AA Agentic Index compared to Gemini 3.1 Pro's 10.3, while GPT-5.6 Sol scores 76.7% on τ²-Bench Airline compared to Gemini 3.1 Pro's 75.3%.
Context: In context, GPT-5.6 Sol scores 1.1M on Context Length compared to Gemini 3.1 Pro's 1.0M.
Pricing Comparison
Gemini 3.1 Pro costs $2.0/1M input tokens and $12.0/1M output tokens, while GPT-5.6 Sol costs $2.0/1M input and $10.0/1M output. Both models are priced identically for input tokens.
Verdict
Gemini 3.1 Pro and GPT-5.6 Sol are closely matched. The best choice depends on your specific use case and priorities.
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Gemini 3.1 Pro vs GPT-5.6 Sol — FAQ
Which is better, Gemini 3.1 Pro or GPT-5.6 Sol?
GPT-5.6 Sol wins on more benchmarks overall (6 vs 1). However, the best choice depends on your specific needs — each model excels in different areas.
How does Gemini 3.1 Pro compare to GPT-5.6 Sol for coding?
SWE-bench Verified data is not available for both models. Check the detailed comparison charts above for other coding-related metrics.
Is Gemini 3.1 Pro cheaper than GPT-5.6 Sol?
Both models are priced the same at $2.0/1M input tokens. Gemini 3.1 Pro output costs $12.0/1M and GPT-5.6 Sol output costs $10.0/1M.
Which is faster, Gemini 3.1 Pro or GPT-5.6 Sol?
Output speed data is not available for both models. Check the speed section of the comparison above for available performance data.
What benchmarks does the Gemini 3.1 Pro vs GPT-5.6 Sol comparison cover?
This comparison covers 9 benchmarks including GPQA Diamond, Input Cost, Output Cost, Context Length, AA Intelligence Index, AA Coding Index, AA Agentic Index, Cached Input Cost, and more. Metrics span general intelligence, coding, math, reasoning, speed, and cost categories.