Both models report the same input price at $2 per 1M tokens.
API cost decision in 10 seconds
Nano Banana Pro (Gemini 3 Pro Image) vs OpenAI GPT Latest
Pick OpenAI GPT Latest when budget and context both matter.
Page updated:
Data confirmed:
Prices normalized to USD per 1M tokens
Sample workload: 1M input + 500K output
Budget verdict
Pick OpenAI GPT Latest when budget and context both matter.
On the standard 1M input plus 500K output workload, OpenAI GPT Latest is estimated at $7 vs $8 for Nano Banana Pro (Gemini 3 Pro Image), saving $1 (12.5% lower).
Cost-first pickOpenAI GPT Latest
Context-first pickOpenAI GPT Latest
Sample savings$112.5%
10x traffic gap$10
OpenAI GPT Latest is cheaper on the standard workload and also has the larger context window. At 10x that traffic, the same price gap is about $10. Use the calculator below to replace the sample workload with your own token volume.
Cost sensitivity
Workload Sensitivity
OpenAI GPT Latest stays cheaper across input-heavy, balanced, and output-heavy sample workloads.
| Workload shape | Token mix | Better pick | Nano Banana Pro (Gemini 3 Pro Image) | OpenAI GPT Latest |
|---|---|---|---|---|
| Input-heavy / RAG | 5M input + 500K output | OpenAI GPT Latest | $16 | $15 |
| Balanced workload | 1M input + 1M output | OpenAI GPT Latest | $14 | $12 |
| Output-heavy chatbot | 1M input + 5M output | OpenAI GPT Latest | $62 | $52 |
OpenAI GPT Latest is $2 cheaper per 1M output tokens (16.7% lower; 1.2x difference).
OpenAI GPT Latest has 918.93K more context (8.01x larger).
OpenAI GPT Latest is $1 cheaper on the standard workload (12.5% lower).
Estimate your workload cost
Your Workload Cost
This estimate uses normalized public API pricing per 1M tokens. It is a planning aid, not a billing quote. Verify provider pricing, limits, and terms before production use.
Quick Decision
both models tie on input price; OpenAI GPT Latest has the lower output price; OpenAI GPT Latest offers the larger context window. For the 1M input plus 500K output sample, OpenAI GPT Latest is cheaper for the standard workload.
For a 1M input token plus 500K output token workload, the estimated API cost is $8 for Nano Banana Pro (Gemini 3 Pro Image) and $7 for OpenAI GPT Latest.
Choose Nano Banana Pro (Gemini 3 Pro Image) when its provider, model quality, latency, or availability is more important than the numeric price/context winner.
Choose OpenAI GPT Latest when you care most about lower output-token price, and larger context window.
- On the standard 1M input plus 500K output workload, OpenAI GPT Latest is estimated at $7 vs $8 for Nano Banana Pro (Gemini 3 Pro Image), saving $1 (12.5% lower).
- OpenAI GPT Latest is $1 cheaper on the standard workload (12.5% lower).
- Both models report the same input price at $2 per 1M tokens.
- OpenAI GPT Latest is $2 cheaper per 1M output tokens (16.7% lower; 1.2x difference).
- OpenAI GPT Latest has 918.93K more context (8.01x larger).
| Feature | Nano Banana Pro (Gemini 3 Pro Image) (Google) | OpenAI GPT Latest (OpenAI) |
|---|---|---|
| Input Price prompt tokens per 1M | $2 | $2 |
| Completion Price per 1M tokens | $12 | $10 |
| Sample Workload Cost 1M input + 500K output | $8 | $7 |
| Context Window | 131.07K | 1.05M |
| Release Date |
Use-Case Decision Matrix
| Use case | Better pick | Why |
|---|---|---|
| Budget-constrained production | OpenAI GPT Latest | On the standard 1M input plus 500K output workload, OpenAI GPT Latest is estimated at $7 vs $8 for Nano Banana Pro (Gemini 3 Pro Image), saving $1 (12.5% lower). |
| High-volume input processing | Tie | Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill. |
| Long responses and chatbots | OpenAI GPT Latest | Lower output-token price matters most when assistants generate many completion tokens. |
| RAG or long-document work | OpenAI GPT Latest | A larger context window leaves more room for retrieved passages, conversation history, or source files. |
Related Alternatives
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Open OpenAI modelsNano Banana Pro is Google’s most advanced image-generation and editing model, built on Gemini 3 Pro. It extends the original Nano Banana with significantly improved multimodal reasoning, real-world grounding, and...
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