Nano Banana Pro (Gemini 3 Pro Image Preview) is $0.5 cheaper per 1M input tokens (20% lower; 1.25x difference).
API cost decision in 10 seconds
GPT Audio vs Nano Banana Pro (Gemini 3 Pro Image Preview)
Pick GPT Audio 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 GPT Audio when budget and context both matter.
On the standard 1M input plus 500K output workload, GPT Audio is estimated at $7.5 vs $8 for Nano Banana Pro (Gemini 3 Pro Image Preview), saving $0.5 (6.2% lower).
Cost-first pickGPT Audio
Context-first pickGPT Audio
Sample savings$0.56.2%
10x traffic gap$5
GPT Audio is cheaper on the standard workload and also has the larger context window. At 10x that traffic, the same price gap is about $5. Use the calculator below to replace the sample workload with your own token volume.
Cost sensitivity
Workload Sensitivity
Cost winner changes by workload shape: input-heavy / RAG favors Nano Banana Pro (Gemini 3 Pro Image Preview), balanced workload favors GPT Audio, and output-heavy chatbot favors GPT Audio.
| Workload shape | Token mix | Better pick | GPT Audio | Nano Banana Pro (Gemini 3 Pro Image Preview) |
|---|---|---|---|---|
| Input-heavy / RAG | 5M input + 500K output | Nano Banana Pro (Gemini 3 Pro Image Preview) | $17.5 | $16 |
| Balanced workload | 1M input + 1M output | GPT Audio | $12.5 | $14 |
| Output-heavy chatbot | 1M input + 5M output | GPT Audio | $52.5 | $62 |
GPT Audio is $2 cheaper per 1M output tokens (16.7% lower; 1.2x difference).
GPT Audio has 62.46K more context (1.95x larger).
GPT Audio is $0.5 cheaper on the standard workload (6.2% 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
Nano Banana Pro (Gemini 3 Pro Image Preview) has the lower input price; GPT Audio has the lower output price; GPT Audio offers the larger context window. For the 1M input plus 500K output sample, GPT Audio is cheaper for the standard workload.
For a 1M input token plus 500K output token workload, the estimated API cost is $7.5 for GPT Audio and $8 for Nano Banana Pro (Gemini 3 Pro Image Preview).
Choose GPT Audio when you care most about lower output-token price, and larger context window.
Choose Nano Banana Pro (Gemini 3 Pro Image Preview) when you care most about lower input-token price.
- On the standard 1M input plus 500K output workload, GPT Audio is estimated at $7.5 vs $8 for Nano Banana Pro (Gemini 3 Pro Image Preview), saving $0.5 (6.2% lower).
- GPT Audio is $0.5 cheaper on the standard workload (6.2% lower).
- Nano Banana Pro (Gemini 3 Pro Image Preview) is $0.5 cheaper per 1M input tokens (20% lower; 1.25x difference).
- GPT Audio is $2 cheaper per 1M output tokens (16.7% lower; 1.2x difference).
- GPT Audio has 62.46K more context (1.95x larger).
| Feature | GPT Audio (OpenAI) | Nano Banana Pro (Gemini 3 Pro Image Preview) (Google) |
|---|---|---|
| Input Price prompt tokens per 1M | $2.5 | $2 |
| Completion Price per 1M tokens | $10 | $12 |
| Sample Workload Cost 1M input + 500K output | $7.5 | $8 |
| Context Window | 128K | 65.54K |
| Release Date |
Use-Case Decision Matrix
| Use case | Better pick | Why |
|---|---|---|
| Budget-constrained production | GPT Audio | On the standard 1M input plus 500K output workload, GPT Audio is estimated at $7.5 vs $8 for Nano Banana Pro (Gemini 3 Pro Image Preview), saving $0.5 (6.2% lower). |
| High-volume input processing | Nano Banana Pro (Gemini 3 Pro Image Preview) | Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill. |
| Long responses and chatbots | GPT Audio | Lower output-token price matters most when assistants generate many completion tokens. |
| RAG or long-document work | GPT Audio | A larger context window leaves more room for retrieved passages, conversation history, or source files. |
Related Alternatives
- gpt-oss-120b (free) can replace GPT Audio when lower sample workload cost matters most: $0.
- gpt-oss-20b (free) can replace GPT Audio when lower sample workload cost matters most: $0.
- gpt-oss-20b can replace GPT Audio when lower sample workload cost matters most: $0.1.
- gpt-oss-120b can replace GPT Audio when lower sample workload cost matters most: $0.13.
- Llama 4 Scout offers 10M context with $0.23 sample workload cost.
- Grok 4.20 Multi-Agent offers 2M context with $5 sample workload cost.
- Grok 4.20 offers 2M context with $2.5 sample workload cost.
- GPT-5.4 offers 1.05M context with $10 sample workload cost.
- DeepSeek V4 Flash · DeepSeek · #1
- Hy3 preview · Tencent · #2
- Claude Opus 4.7 · Anthropic · #3
- Claude Sonnet 4.6 · Anthropic · #4
Cheaper alternatives
Review low-cost models sorted by a standard 1M input plus 500K output workload.
Open cheapest modelsLarger context alternatives
Find models with larger context windows for RAG, long documents, and codebase review.
Open largest context modelsProvider catalogs
Compare models within provider hubs before choosing a final API vendor.
Open provider hubsOpenAI catalog
Review all tracked OpenAI models before deciding whether this matchup is the right shortlist.
Open OpenAI modelsGoogle catalog
Check other Google models with comparable pricing, context, or release timing.
Open Google modelsThe gpt-audio model is OpenAI's first generally available audio model. The new snapshot features an upgraded decoder for more natural sounding voices and maintains better voice consistency. Audio is priced...
Nano 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...