Gemini 2.5 Pro vs Gemini 3.1 Flash Lite
Gemini 3.1 Flash Lite leads in 4 of 8 categories
Arena ELO
Gemini 3.1 Flash Lite
Cheaper
Gemini 3.1 Flash Lite
Faster
Gemini 3.1 Flash Lite
Detailed Comparison
| Category | Gemini 2.5 Pro | Gemini 3.1 Flash Lite |
|---|---|---|
| Provider | ||
| Context Window | 1M | 1M |
| Input Price ($/1M) | $1.25 | $0.1 WIN |
| Output Price ($/1M) | $10 | $0.4 WIN |
| Arena ELO | 1360 | 1492 WIN |
| Coding | 75.6% LiveCodeBench | unknown |
| Reasoning | 84.6% GPQA Diamond | unknown |
| Speed (tokens/sec) | ~60 t/s | ~200 t/s WIN |
| Open Source | No | No |
Frequently Asked Questions
Which is cheaper, Gemini 2.5 Pro or Gemini 3.1 Flash Lite?
Gemini 3.1 Flash Lite is approximately 96% cheaper than Gemini 2.5 Pro per million tokens.
Which is better for coding, Gemini 2.5 Pro or Gemini 3.1 Flash Lite?
Gemini 2.5 Pro scores 75.6% LiveCodeBench on coding benchmarks, while Gemini 3.1 Flash Lite scores unknown.
Which has a larger context window?
Gemini 2.5 Pro supports 1M context, while Gemini 3.1 Flash Lite supports 1M.
Is Gemini 2.5 Pro or Gemini 3.1 Flash Lite open source?
Gemini 2.5 Pro is proprietary. Gemini 3.1 Flash Lite is proprietary.
Which ranks higher on the Chatbot Arena leaderboard?
Gemini 3.1 Flash Lite ranks higher with ELO 1492 vs 1360.
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