Gemini 3.5 Flash vs o1

Side-by-side benchmark comparison across coding, math, reasoning, speed, and pricing.

Gemini 3.5 Flash by Google wins on 6 of 6 benchmarks against o1 by OpenAI, which leads on 0. This head-to-head comparison covers coding, math, reasoning, speed, and pricing metrics from our benchmark data.

Category-by-Category Breakdown

Coding: In coding, Gemini 3.5 Flash scores 70.1 on AA Coding Index compared to o1's 39.7.

Reasoning: In reasoning, Gemini 3.5 Flash scores 92.8% on GPQA Diamond compared to o1's 77.3%.

Context: In context, Gemini 3.5 Flash scores 1.0M on Context Length compared to o1's 200K.

Pricing Comparison

Gemini 3.5 Flash costs $1.5/1M input tokens and $9.0/1M output tokens, while o1 costs $15.0/1M input and $60.0/1M output. Gemini 3.5 Flash is the more affordable option for API usage.

Verdict

Gemini 3.5 Flash leads across the board in affordability, making it the stronger overall choice in this comparison.

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Gemini 3.5 Flash vs o1 — FAQ

Which is better, Gemini 3.5 Flash or o1?

Gemini 3.5 Flash wins on more benchmarks overall (6 vs 0). However, the best choice depends on your specific needs — each model excels in different areas.

How does Gemini 3.5 Flash compare to o1 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 3.5 Flash cheaper than o1?

Yes, Gemini 3.5 Flash is cheaper. Gemini 3.5 Flash costs $1.5/1M input and $9.0/1M output tokens. o1 costs $15.0/1M input and $60.0/1M output tokens.

Which is faster, Gemini 3.5 Flash or o1?

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 3.5 Flash vs o1 comparison cover?

This comparison covers 6 benchmarks including GPQA Diamond, Input Cost, Output Cost, Context Length, AA Coding Index, Cached Input Cost. Metrics span general intelligence, coding, math, reasoning, speed, and cost categories.