Google: Gemini 2.5 Flash vs Google: Nano Banana Pro (Gemini 3 Pro Image Preview): Which AI Model Is Better?
Updated March 24, 2026· Based on independent benchmark data
Quick Verdict
Google: Nano Banana Pro (Gemini 3 Pro Image Preview) leads in intelligence with a score of 48.4 vs 19.4. Google: Gemini 2.5 Flash is 6.7x cheaper at $0.30/1M tokens vs $2.00/1M. For speed, Google: Gemini 2.5 Flash wins at 343 tok/s vs 119 tok/s.
Head-to-Head Comparison
| Metric | Google: Gemini 2.5 Flash | Google: Nano Banana Pro (Gemini 3 Pro Image Preview) |
|---|---|---|
| Intelligence Score | 19.4 | 48.4 |
| Coding Score | 14.5 | 46.5 |
| Math Score | 46.7 | 95.7 |
| Speed (tok/s) | 343 tok/s | 119 tok/s |
| Latency (TTFT) | 0.31s | 21.66s |
| Input Price / 1M tokens | $0.30 | $2.00 |
| Output Price / 1M tokens | $2.50 | $12 |
| Context Window | 1.0M | 66K |
| Max Output Tokens | 66K | 33K |
| Input Modalities | File + Image + Text + Audio + Video | Image + Text |
| Output Modalities | Text | Image + Text |
| Free Tier | No | No |
Detailed Analysis
Intelligence & Quality
Google: Nano Banana Pro (Gemini 3 Pro Image Preview) outperforms Google: Gemini 2.5 Flash on the Artificial Analysis intelligence index with a score of 48.4 compared to 19.4. For coding tasks, Google: Nano Banana Pro (Gemini 3 Pro Image Preview) has the edge with a coding score of 46.5 vs 14.5. In mathematical reasoning, Google: Nano Banana Pro (Gemini 3 Pro Image Preview) leads with 95.7 compared to Google: Gemini 2.5 Flash's 46.7.
Speed & Latency
Google: Gemini 2.5 Flash generates output significantly faster at 343 tok/s compared to Google: Nano Banana Pro (Gemini 3 Pro Image Preview)'s 119 tok/s, making it 2.9x faster for streaming responses. Time to first token is 0.31s for Google: Gemini 2.5 Flash vs 21.66s for Google: Nano Banana Pro (Gemini 3 Pro Image Preview), which affects perceived responsiveness in interactive applications.
Pricing
Google: Gemini 2.5 Flash is more affordable at $0.30/1M input tokens ($2.50/1M output), while Google: Nano Banana Pro (Gemini 3 Pro Image Preview) costs $2.00/1M input ($12/1M output). That makes Google: Nano Banana Pro (Gemini 3 Pro Image Preview) 6.7x 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, Google: Gemini 2.5 Flash would cost approximately $1.80/month vs $12.00/month for Google: Nano Banana Pro (Gemini 3 Pro Image Preview) in input costs alone.
Context Window
Google: Gemini 2.5 Flash offers a larger context window at 1.0M tokens compared to Google: Nano Banana Pro (Gemini 3 Pro Image Preview)'s 66K. This means Google: Gemini 2.5 Flash can process roughly 524 pages of text in a single request vs 33 pages for Google: Nano Banana Pro (Gemini 3 Pro Image Preview). For output length, Google: Gemini 2.5 Flash can generate up to 66K tokens per response vs 33K for Google: Nano Banana Pro (Gemini 3 Pro Image Preview).
Best Use Cases
Choose Google: Gemini 2.5 Flash when you need faster output (343 tok/s), lower cost, larger context window (1.0M). Choose Google: Nano Banana Pro (Gemini 3 Pro Image Preview) when you need higher intelligence (48.4), stronger coding performance (46.5).
Choose Google: Gemini 2.5 Flash if:
- ✓You need faster throughput (343 tok/s vs 119 tok/s)
- ✓You want lower latency (0.31s vs 21.66s TTFT)
- ✓Budget is a concern ($0.30/1M vs $2.00/1M)
- ✓You need a larger context window (1.0M vs 66K)
Choose Google: Nano Banana Pro (Gemini 3 Pro Image Preview) if:
- ✓You need higher intelligence (score: 48.4 vs 19.4)
- ✓You prioritize coding performance (score: 46.5 vs 14.5)
- ✓Math reasoning is important (score: 95.7 vs 46.7)
Frequently Asked Questions
Is Google: Gemini 2.5 Flash better than Google: Nano Banana Pro (Gemini 3 Pro Image Preview) for coding?
Google: Nano Banana Pro (Gemini 3 Pro Image Preview) scores higher on coding benchmarks (46.5 vs 14.5), making it the better choice for programming tasks.
Which is cheaper, Google: Gemini 2.5 Flash or Google: Nano Banana Pro (Gemini 3 Pro Image Preview)?
Google: Gemini 2.5 Flash is cheaper at $0.30/1M input tokens vs $2.00/1M for Google: Nano Banana Pro (Gemini 3 Pro Image Preview).
Is Google: Gemini 2.5 Flash faster than Google: Nano Banana Pro (Gemini 3 Pro Image Preview)?
Google: Gemini 2.5 Flash is faster, producing output at 343 tok/s compared to Google: Nano Banana Pro (Gemini 3 Pro Image Preview)'s 119 tok/s.
Can Google: Gemini 2.5 Flash process images?
Yes, Google: Gemini 2.5 Flash supports image input. Google: Nano Banana Pro (Gemini 3 Pro Image Preview) also supports images.
Which has a larger context window, Google: Gemini 2.5 Flash or Google: Nano Banana Pro (Gemini 3 Pro Image Preview)?
Google: Gemini 2.5 Flash has a larger context window at 1.0M compared to Google: Nano Banana Pro (Gemini 3 Pro Image Preview)'s 66K.
Should I use Google: Gemini 2.5 Flash or Google: Nano Banana Pro (Gemini 3 Pro Image Preview)?
It depends on your priorities. Google: Nano Banana Pro (Gemini 3 Pro Image Preview) scores higher on intelligence (48.4), but Google: Gemini 2.5 Flash may be better for specific use cases like budget-conscious projects or speed-critical applications.
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Benchmark data by Artificial Analysis
Data last synced: March 24, 2026