OpenAI: GPT-3.5 Turbo 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
OpenAI: GPT-3.5 Turbo is 4.0x cheaper at $0.50/1M tokens vs $2.00/1M.
Head-to-Head Comparison
| Metric | OpenAI: GPT-3.5 Turbo | Google: Nano Banana Pro (Gemini 3 Pro Image Preview) |
|---|---|---|
| Intelligence Score | N/A | 48.4 |
| Coding Score | N/A | 46.5 |
| Math Score | N/A | 95.7 |
| Speed (tok/s) | N/A | 119 tok/s |
| Latency (TTFT) | N/A | 21.66s |
| Input Price / 1M tokens | $0.50 | $2.00 |
| Output Price / 1M tokens | $1.50 | $12 |
| Context Window | 16K | 66K |
| Max Output Tokens | 4K | 33K |
| Input Modalities | Text | Image + Text |
| Output Modalities | Text | Image + Text |
| Free Tier | No | No |
Detailed Analysis
Pricing
OpenAI: GPT-3.5 Turbo is more affordable at $0.50/1M input tokens ($1.50/1M 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) 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, OpenAI: GPT-3.5 Turbo would cost approximately $3.00/month vs $12.00/month for Google: Nano Banana Pro (Gemini 3 Pro Image Preview) in input costs alone.
Context Window
Google: Nano Banana Pro (Gemini 3 Pro Image Preview) offers a larger context window at 66K tokens compared to OpenAI: GPT-3.5 Turbo's 16K. This means Google: Nano Banana Pro (Gemini 3 Pro Image Preview) can process roughly 33 pages of text in a single request vs 8 pages for OpenAI: GPT-3.5 Turbo. For output length, Google: Nano Banana Pro (Gemini 3 Pro Image Preview) can generate up to 33K tokens per response vs 4K for OpenAI: GPT-3.5 Turbo.
Best Use Cases
Choose OpenAI: GPT-3.5 Turbo when you need lower cost. Choose Google: Nano Banana Pro (Gemini 3 Pro Image Preview) when you need larger context window (66K).
Choose OpenAI: GPT-3.5 Turbo if:
- ✓Budget is a concern ($0.50/1M vs $2.00/1M)
Choose Google: Nano Banana Pro (Gemini 3 Pro Image Preview) if:
- ✓You need a larger context window (66K vs 16K)
- ✓You need image understanding (Supports image input)
Frequently Asked Questions
Which is cheaper, OpenAI: GPT-3.5 Turbo or Google: Nano Banana Pro (Gemini 3 Pro Image Preview)?
OpenAI: GPT-3.5 Turbo is cheaper at $0.50/1M input tokens vs $2.00/1M for Google: Nano Banana Pro (Gemini 3 Pro Image Preview).
Can OpenAI: GPT-3.5 Turbo process images?
No, OpenAI: GPT-3.5 Turbo does not support image input. However, Google: Nano Banana Pro (Gemini 3 Pro Image Preview) does support images.
Which has a larger context window, OpenAI: GPT-3.5 Turbo or Google: Nano Banana Pro (Gemini 3 Pro Image Preview)?
Google: Nano Banana Pro (Gemini 3 Pro Image Preview) has a larger context window at 66K compared to OpenAI: GPT-3.5 Turbo's 16K.
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Benchmark data by Artificial Analysis
Data last synced: March 24, 2026