Updated March 25, 2026· Based on independent benchmark data
Google: Gemini 3.1 Pro Preview Custom Tools leads in intelligence with a score of 57.2 vs 51.3. For speed, Google: Gemini 3.1 Pro Preview Custom Tools wins at 113 tok/s vs 69 tok/s.
| Metric | OpenAI: GPT-5.2 | Google: Gemini 3.1 Pro Preview Custom Tools |
|---|---|---|
| Intelligence Score | 51.3 | 57.2 |
| Coding Score | 48.7 | 55.5 |
| Math Score | 99.0 | N/A |
| Speed (tok/s) | 69 tok/s | 113 tok/s |
| Latency (TTFT) | 72.74s | 23.00s |
| Input Price / 1M tokens | $1.75 | $2.00 |
| Output Price / 1M tokens | $14 | $12 |
| Context Window | 400K |
Google: Gemini 3.1 Pro Preview Custom Tools outperforms OpenAI: GPT-5.2 on the intelligence index with a score of 57.2 compared to 51.3. For coding tasks, Google: Gemini 3.1 Pro Preview Custom Tools has the edge with a coding score of 55.5 vs 48.7.
Google: Gemini 3.1 Pro Preview Custom Tools generates output significantly faster at 113 tok/s compared to OpenAI: GPT-5.2's 69 tok/s, making it 1.6x faster for streaming responses. Time to first token is 23.00s for Google: Gemini 3.1 Pro Preview Custom Tools vs 72.74s for OpenAI: GPT-5.2, which affects perceived responsiveness in interactive applications.
OpenAI: GPT-5.2 is more affordable at $1.75/1M input tokens ($14/1M output), while Google: Gemini 3.1 Pro Preview Custom Tools costs $2.00/1M input ($12/1M output). For a typical workload of 100 requests per day at 2,000 tokens each, OpenAI: GPT-5.2 would cost approximately $10.50/month vs $12.00/month for Google: Gemini 3.1 Pro Preview Custom Tools in input costs alone.
Google: Gemini 3.1 Pro Preview Custom Tools offers a larger context window at 1.0M tokens compared to OpenAI: GPT-5.2's 400K. This means Google: Gemini 3.1 Pro Preview Custom Tools can process roughly 524 pages of text in a single request vs 200 pages for OpenAI: GPT-5.2. For output length, OpenAI: GPT-5.2 can generate up to 128K tokens per response vs 66K for Google: Gemini 3.1 Pro Preview Custom Tools.
Choose Google: Gemini 3.1 Pro Preview Custom Tools when you need higher intelligence (57.2), stronger coding performance (55.5), faster output (113 tok/s), larger context window (1.0M).
Google: Gemini 3.1 Pro Preview Custom Tools scores higher on coding benchmarks (55.5 vs 48.7), making it the better choice for programming tasks.
OpenAI: GPT-5.2 is cheaper at $1.75/1M input tokens vs $2.00/1M for Google: Gemini 3.1 Pro Preview Custom Tools.
Google: Gemini 3.1 Pro Preview Custom Tools is faster, producing output at 113 tok/s compared to OpenAI: GPT-5.2's 69 tok/s.
Yes, OpenAI: GPT-5.2 supports image input. Google: Gemini 3.1 Pro Preview Custom Tools also supports images.
Data last synced: March 25, 2026
| 1.0M |
| Max Output Tokens | 128K | 66K |
| Input Modalities | File + Image + Text | Text + Audio + Image + Video + File |
| Output Modalities | Text | Text |
| Free Tier | No | No |
Google: Gemini 3.1 Pro Preview Custom Tools has a larger context window at 1.0M compared to OpenAI: GPT-5.2's 400K.
It depends on your priorities. Google: Gemini 3.1 Pro Preview Custom Tools scores higher on intelligence (57.2), but OpenAI: GPT-5.2 may be better for specific use cases like budget-conscious projects or speed-critical applications.