Gemini 2.5 Pro vs GPT-5.5
Gemini 2.5 Pro leads in 5 of 8 categories
Arena ELO
Gemini 2.5 Pro
Cheaper
Gemini 2.5 Pro
Faster
Gemini 2.5 Pro
Detailed Comparison
| Category | Gemini 2.5 Pro | GPT-5.5 |
|---|---|---|
| Provider | OpenAI | |
| Context Window | 1M WIN | 128K |
| Input Price ($/1M) | $1.25 WIN | $5 |
| Output Price ($/1M) | $10 WIN | $30 |
| Arena ELO | 1360 WIN | N/A |
| Coding | 75.6% LiveCodeBench | N/A |
| Reasoning | 84.6% GPQA Diamond | N/A |
| Speed (tokens/sec) | ~60 t/s WIN | N/A |
| Open Source | No | No |
Frequently Asked Questions
Which is cheaper, Gemini 2.5 Pro or GPT-5.5?
Gemini 2.5 Pro is approximately 68% cheaper than GPT-5.5 per million tokens.
Which is better for coding, Gemini 2.5 Pro or GPT-5.5?
Gemini 2.5 Pro scores 75.6% LiveCodeBench on coding benchmarks, while GPT-5.5 scores N/A.
Which has a larger context window?
Gemini 2.5 Pro supports 1M context, while GPT-5.5 supports 128K.
Is Gemini 2.5 Pro or GPT-5.5 open source?
Gemini 2.5 Pro is proprietary. GPT-5.5 is proprietary.
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