Gemini 3.1 Pro vs Gemini 3 Flash Comparison
Comparing Gemini 3.1 Pro and Gemini 3 Flash across benchmarks, pricing, and capabilities.
Performance Benchmarks
Comparative analysis across standard metrics
Gemini 3.1 Pro outperforms in 10 benchmarks (ARC-AGI v2, GPQA, Humanity's Last Exam, LiveCodeBench Pro, MCP Atlas, MMMLU, MRCR v2 (8-needle), SWE-Bench Verified, t2-bench, Terminal-Bench 2.0), while Gemini 3 Flash is better at 1 benchmark (MMMU-Pro).
Gemini 3.1 Pro significantly outperforms across most benchmarks.
Arena Performance
Human preference votes
Pricing Analysis
Price comparison per million tokens
Cost data unavailable.
Context Window
Maximum input and output token capacity
Only Gemini 3 Flash specifies input context (1,000,000 tokens). Only Gemini 3 Flash specifies output context (65,536 tokens).
Input Capabilities
Supported data types and modalities
Both Gemini 3.1 Pro and Gemini 3 Flash support multimodal inputs.
They are both capable of processing various types of data, offering versatility in application.
Gemini 3.1 Pro
Gemini 3 Flash
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 3.1 Pro was released on 2026-02-19, while Gemini 3 Flash was released on 2025-12-17.
Gemini 3.1 Pro is 2 months newer than Gemini 3 Flash.
Feb 19, 2026
3 weeks ago
2mo newerDec 17, 2025
3 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
Outputs Comparison
Key Takeaways
Detailed Comparison
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