Nano Banana Pro (Gemini 3 Pro Image) is $3 cheaper per 1M input tokens (60% lower; 2.5x difference).
API cost decision in 10 seconds
Nano Banana Pro (Gemini 3 Pro Image) vs Claude Fable 5 (batch)
Pick Nano Banana Pro (Gemini 3 Pro Image) for lower cost; pick Claude Fable 5 (batch) only if the larger context window matters more.
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Data confirmed:
Prices normalized to USD per 1M tokens
Sample workload: 1M input + 500K output
Budget verdict
Pick Nano Banana Pro (Gemini 3 Pro Image) for lower cost; pick Claude Fable 5 (batch) only if the larger context window matters more.
On the standard 1M input plus 500K output workload, Nano Banana Pro (Gemini 3 Pro Image) is estimated at $8 vs $17.5 for Claude Fable 5 (batch), saving $9.5 (54.3% lower).
Cost-first pickNano Banana Pro (Gemini 3 Pro Image)
Context-first pickClaude Fable 5 (batch)
Sample savings$9.554.3%
10x traffic gap$95
Claude Fable 5 (batch) has more context, but Nano Banana Pro (Gemini 3 Pro Image) saves $9.5 on the standard workload. At 10x that traffic, the same price gap is about $95. Use the calculator below to replace the sample workload with your own token volume.
Cost sensitivity
Workload Sensitivity
Nano Banana Pro (Gemini 3 Pro Image) stays cheaper across input-heavy, balanced, and output-heavy sample workloads.
| Workload shape | Token mix | Better pick | Nano Banana Pro (Gemini 3 Pro Image) | Claude Fable 5 (batch) |
|---|---|---|---|---|
| Input-heavy / RAG | 5M input + 500K output | Nano Banana Pro (Gemini 3 Pro Image) | $16 | $37.5 |
| Balanced workload | 1M input + 1M output | Nano Banana Pro (Gemini 3 Pro Image) | $14 | $30 |
| Output-heavy chatbot | 1M input + 5M output | Nano Banana Pro (Gemini 3 Pro Image) | $62 | $130 |
Nano Banana Pro (Gemini 3 Pro Image) is $13 cheaper per 1M output tokens (52% lower; 2.08x difference).
Claude Fable 5 (batch) has 868.93K more context (7.63x larger).
Nano Banana Pro (Gemini 3 Pro Image) is $9.5 cheaper on the standard workload (54.3% 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) has the lower input price; Nano Banana Pro (Gemini 3 Pro Image) has the lower output price; Claude Fable 5 (batch) offers the larger context window. For the 1M input plus 500K output sample, Nano Banana Pro (Gemini 3 Pro Image) 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 $17.5 for Claude Fable 5 (batch).
Choose Nano Banana Pro (Gemini 3 Pro Image) when you care most about lower input-token price, and lower output-token price.
Choose Claude Fable 5 (batch) when you care most about larger context window.
- On the standard 1M input plus 500K output workload, Nano Banana Pro (Gemini 3 Pro Image) is estimated at $8 vs $17.5 for Claude Fable 5 (batch), saving $9.5 (54.3% lower).
- Nano Banana Pro (Gemini 3 Pro Image) is $9.5 cheaper on the standard workload (54.3% lower).
- Nano Banana Pro (Gemini 3 Pro Image) is $3 cheaper per 1M input tokens (60% lower; 2.5x difference).
- Nano Banana Pro (Gemini 3 Pro Image) is $13 cheaper per 1M output tokens (52% lower; 2.08x difference).
- Claude Fable 5 (batch) has 868.93K more context (7.63x larger).
| Feature | Nano Banana Pro (Gemini 3 Pro Image) (Google) | Claude Fable 5 (batch) (Anthropic) |
|---|---|---|
| Input Price prompt tokens per 1M | $2 | $5 |
| Completion Price per 1M tokens | $12 | $25 |
| Sample Workload Cost 1M input + 500K output | $8 | $17.5 |
| Context Window | 131.07K | 1M |
| Release Date |
Use-Case Decision Matrix
| Use case | Better pick | Why |
|---|---|---|
| Budget-constrained production | Nano Banana Pro (Gemini 3 Pro Image) | On the standard 1M input plus 500K output workload, Nano Banana Pro (Gemini 3 Pro Image) is estimated at $8 vs $17.5 for Claude Fable 5 (batch), saving $9.5 (54.3% lower). |
| High-volume input processing | Nano Banana Pro (Gemini 3 Pro Image) | Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill. |
| Long responses and chatbots | Nano Banana Pro (Gemini 3 Pro Image) | Lower output-token price matters most when assistants generate many completion tokens. |
| RAG or long-document work | Claude Fable 5 (batch) | A larger context window leaves more room for retrieved passages, conversation history, or source files. |
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Cheaper alternatives
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