Updated March 26, 2026· Based on independent benchmark data
Both Google: Gemini 3.5 Flash and Gemini 3.1 Pro Preview are competitive AI models. See the detailed comparison below to find which best fits your needs.
| Metric | Google: Gemini 3.5 Flash | Gemini 3.1 Pro Preview |
|---|---|---|
| Intelligence Score | N/A | 57.2 |
| Coding Score | N/A | 55.5 |
| Math Score | N/A | N/A |
| Speed (tok/s) | N/A | 113 tok/s |
| Latency (TTFT) | N/A | 23.84s |
| Input Price / 1M tokens | $1.50 | $2.00 |
| Output Price / 1M tokens | $9.00 | $12 |
| Context Window | 1.0M | 1.0M |
| Max Output Tokens | 66K | N/A |
| Input Modalities | Text + Image + Video + File + Audio | Audio + File + Image + Text + Video |
| Output Modalities |
Google: Gemini 3.5 Flash is more affordable at $1.50/1M input tokens ($9.00/1M output), while Gemini 3.1 Pro Preview costs $2.00/1M input ($12/1M output). For a typical workload of 100 requests per day at 2,000 tokens each, Google: Gemini 3.5 Flash would cost approximately $9.00/month vs $12.00/month for Gemini 3.1 Pro Preview in input costs alone.
Both models support the same context window of 1.0M tokens (approximately 524 pages of text).
Google: Gemini 3.5 Flash is cheaper at $1.50/1M input tokens vs $2.00/1M for Gemini 3.1 Pro Preview.
Yes, Google: Gemini 3.5 Flash supports image input. Gemini 3.1 Pro Preview also supports images.
Both models have the same context window of 1.0M tokens.
Data last synced: March 26, 2026
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| Free Tier | No | No |