Model Comparison
Gemini 3 Flash vs Gemini 3 ProWhich is better in 2026?
Gemini 3 Pro shows notably better performance in the majority of benchmarks. Gemini 3 Flash is 4.0x cheaper per token.
Verdict: Gemini 3 Flash vs Gemini 3 Pro — which is better?
Gemini 3 Flash (by Google) and Gemini 3 Pro (by Google) are two of the AI models people compare most. Here is how they stack up on benchmarks, price and capabilities, and which one to pick in 2026.
Gemini 3 Flash outperforms in 5 benchmarks (ARC-AGI v2, MMMU-Pro, OmniDocBench 1.5, SWE-Bench Verified, t2-bench), while Gemini 3 Pro is better at 13 benchmarks (AIME 2025, CharXiv-R, FACTS Grounding, Global PIQA, GPQA, Humanity's Last Exam, LiveBench, LiveCodeBench Pro, MRCR v2 (8-needle), ScreenSpot Pro, SimpleQA, Terminal-Bench 2.0, VideoMMMU). Gemini 3 Pro shows notably better performance in the majority of benchmarks.
On price, Gemini 3 Flash is roughly 4.0x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
Gemini 3 Pro also accepts a larger context window (1,048,576 input tokens), making it the stronger choice for long documents and large codebases.
Choose Gemini 3 Flash if…
- cost matters — it's about 4.0x cheaper per token
- you want the most recent training data — it shipped Dec 2025
Choose Gemini 3 Pro if…
- you want the strongest raw capability — it leads on 15 of 20 shared benchmarks
- you process long inputs — it offers a 1,048,576 token context window
Performance Benchmarks
Comparative analysis across standard metrics
Gemini 3 Flash outperforms in 5 benchmarks (ARC-AGI v2, MMMU-Pro, OmniDocBench 1.5, SWE-Bench Verified, t2-bench), while Gemini 3 Pro is better at 13 benchmarks (AIME 2025, CharXiv-R, FACTS Grounding, Global PIQA, GPQA, Humanity's Last Exam, LiveBench, LiveCodeBench Pro, MRCR v2 (8-needle), ScreenSpot Pro, SimpleQA, Terminal-Bench 2.0, VideoMMMU).
Gemini 3 Pro shows notably better performance in the majority of benchmarks.
Arena Performance
Human preference votes
Pricing Analysis
Price comparison per million tokens
For input processing, Gemini 3 Flash ($0.50/1M tokens) is 4.0x cheaper than Gemini 3 Pro ($2.00/1M tokens).
For output processing, Gemini 3 Flash ($3.00/1M tokens) is 4.0x cheaper than Gemini 3 Pro ($12.00/1M tokens).
In conclusion, Gemini 3 Pro is more expensive than Gemini 3 Flash.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
Gemini 3 Pro accepts 1,048,576 input tokens compared to Gemini 3 Flash's 1,000,000 tokens. Both models can generate responses up to 65,536 tokens.
Input Capabilities
Supported data types and modalities
Both Gemini 3 Flash and Gemini 3 Pro support multimodal inputs.
They are both capable of processing various types of data, offering versatility in application.
Gemini 3 Flash
Gemini 3 Pro
License
Usage and distribution terms
Both models are licensed under proprietary licenses.
Both models have usage restrictions defined by their respective organizations.
Proprietary
Closed source
Proprietary
Closed source
Release Timeline
When each model was launched
Gemini 3 Flash was released on 2025-12-17, while Gemini 3 Pro was released on 2025-11-18.
Gemini 3 Flash is 1 month newer than Gemini 3 Pro.
Dec 17, 2025
7 months ago
4w newerNov 18, 2025
8 months ago
Knowledge Cutoff
When training data ends
Both models have the same knowledge cutoff date of 2025-01-31.
They should have similar awareness of historical events and information up to this date.
Jan 2025
Jan 2025
Provider Availability
Gemini 3 Flash is available from Google. Gemini 3 Pro is available from Google.
Gemini 3 Flash
Gemini 3 Pro
Outputs Comparison
Key Takeaways
Gemini 3 Pro
View detailsDetailed Comparison
Interactive Arena
Judge for yourself.
Run your own prompts against Gemini 3 Flash and Gemini 3 Pro side-by-side, then vote on the output you prefer.
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FAQ
Common questions about Gemini 3 Flash vs Gemini 3 Pro.