Updated March 26, 2026· Based on independent benchmark data
Gemini 3.1 Pro Preview leads in intelligence with a score of 57.2 vs 9.0. GPT-3.5 Turbo is 4.0x cheaper at $0.50/1M tokens vs $2.00/1M.
| Metric | GPT-3.5 Turbo | Gemini 3.1 Pro Preview |
|---|---|---|
| Intelligence Score | 9.0 | 57.2 |
| Coding Score | 10.7 | 55.5 |
| Math Score | N/A | N/A |
| Speed (tok/s) | 97 tok/s | 113 tok/s |
| Latency (TTFT) | 0.42s | 23.84s |
| Input Price / 1M tokens | $0.50 | $2.00 |
| Output Price / 1M tokens | $1.50 | $12 |
| Context Window | 16K |
Gemini 3.1 Pro Preview outperforms GPT-3.5 Turbo on the intelligence index with a score of 57.2 compared to 9.0. For coding tasks, Gemini 3.1 Pro Preview has the edge with a coding score of 55.5 vs 10.7.
Both models deliver similar output speeds: GPT-3.5 Turbo at 97 tok/s and Gemini 3.1 Pro Preview at 113 tok/s. Time to first token is 0.42s for GPT-3.5 Turbo vs 23.84s for Gemini 3.1 Pro Preview, which affects perceived responsiveness in interactive applications.
GPT-3.5 Turbo is more affordable at $0.50/1M input tokens ($1.50/1M output), while Gemini 3.1 Pro Preview costs $2.00/1M input ($12/1M output). That makes Gemini 3.1 Pro Preview 4.0x more expensive per token, which can add up significantly at scale. For a typical workload of 100 requests per day at 2,000 tokens each, GPT-3.5 Turbo would cost approximately $3.00/month vs $12.00/month for Gemini 3.1 Pro Preview in input costs alone.
Gemini 3.1 Pro Preview offers a larger context window at 1.0M tokens compared to GPT-3.5 Turbo's 16K. This means Gemini 3.1 Pro Preview can process roughly 524 pages of text in a single request vs 8 pages for GPT-3.5 Turbo.
Choose GPT-3.5 Turbo when you need lower cost. Choose Gemini 3.1 Pro Preview when you need higher intelligence (57.2), stronger coding performance (55.5), larger context window (1.0M).
Gemini 3.1 Pro Preview scores higher on coding benchmarks (55.5 vs 10.7), making it the better choice for programming tasks.
GPT-3.5 Turbo is cheaper at $0.50/1M input tokens vs $2.00/1M for Gemini 3.1 Pro Preview.
Gemini 3.1 Pro Preview is faster, producing output at 113 tok/s compared to GPT-3.5 Turbo's 97 tok/s.
No, GPT-3.5 Turbo does not support image input. However, Gemini 3.1 Pro Preview does support images.
Data last synced: March 26, 2026
| 1.0M |
| Max Output Tokens | N/A | N/A |
| Input Modalities | Text | Audio + File + Image + Text + Video |
| Output Modalities | Text | Text |
| Free Tier | No | No |
Gemini 3.1 Pro Preview has a larger context window at 1.0M compared to GPT-3.5 Turbo's 16K.
It depends on your priorities. Gemini 3.1 Pro Preview scores higher on intelligence (57.2), but GPT-3.5 Turbo may be better for specific use cases like budget-conscious projects or speed-critical applications.