Moondream 3.1 is $1.2 cheaper per 1M input tokens (80% lower; 5x difference).
API cost decision in 10 seconds
NewMoondream 3.1 vs NewNano Banana 2.1
Pick Moondream 3.1 for lower cost; pick Nano Banana 2.1 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 Moondream 3.1 for lower cost; pick Nano Banana 2.1 only if the larger context window matters more.
On the standard 1M input plus 500K output workload, Moondream 3.1 is estimated at $1.55 vs $5.25 for Nano Banana 2.1, saving $3.7 (70.5% lower).
Cost-first pickMoondream 3.1
Context-first pickNano Banana 2.1
Sample savings$3.770.5%
10x traffic gap$37
Nano Banana 2.1 has more context, but Moondream 3.1 saves $3.7 on the standard workload. At 10x that traffic, the same price gap is about $37. Use the calculator below to replace the sample workload with your own token volume.
Cost sensitivity
Workload Sensitivity
Moondream 3.1 stays cheaper across input-heavy, balanced, and output-heavy sample workloads.
| Workload shape | Token mix | Better pick | Moondream 3.1 | Nano Banana 2.1 |
|---|---|---|---|---|
| Input-heavy / RAG | 5M input + 500K output | Moondream 3.1 | $2.75 | $11.25 |
| Balanced workload | 1M input + 1M output | Moondream 3.1 | $2.8 | $9 |
| Output-heavy chatbot | 1M input + 5M output | Moondream 3.1 | $12.8 | $39 |
Moondream 3.1 is $5 cheaper per 1M output tokens (66.7% lower; 3x difference).
Nano Banana 2.1 has 33.54K more context (2.05x larger).
Moondream 3.1 is $3.7 cheaper on the standard workload (70.5% 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
Moondream 3.1 has the lower input price; Moondream 3.1 has the lower output price; Nano Banana 2.1 offers the larger context window. For the 1M input plus 500K output sample, Moondream 3.1 is cheaper for the standard workload.
For a 1M input token plus 500K output token workload, the estimated API cost is $1.55 for Moondream 3.1 and $5.25 for Nano Banana 2.1.
Choose Moondream 3.1 when you care most about lower input-token price, and lower output-token price.
Choose Nano Banana 2.1 when you care most about larger context window.
- On the standard 1M input plus 500K output workload, Moondream 3.1 is estimated at $1.55 vs $5.25 for Nano Banana 2.1, saving $3.7 (70.5% lower).
- Moondream 3.1 is $3.7 cheaper on the standard workload (70.5% lower).
- Moondream 3.1 is $1.2 cheaper per 1M input tokens (80% lower; 5x difference).
- Moondream 3.1 is $5 cheaper per 1M output tokens (66.7% lower; 3x difference).
- Nano Banana 2.1 has 33.54K more context (2.05x larger).
| Feature | NewMoondream 3.1 (Moondream) | NewNano Banana 2.1 (Google) |
|---|---|---|
| Input Price prompt tokens per 1M | $0.3 | $1.5 |
| Completion Price per 1M tokens | $2.5 | $7.5 |
| Sample Workload Cost 1M input + 500K output | $1.55 | $5.25 |
| Context Window | 32K | 65.54K |
| Release Date |
Use-Case Decision Matrix
| Use case | Better pick | Why |
|---|---|---|
| Budget-constrained production | Moondream 3.1 | On the standard 1M input plus 500K output workload, Moondream 3.1 is estimated at $1.55 vs $5.25 for Nano Banana 2.1, saving $3.7 (70.5% lower). |
| High-volume input processing | Moondream 3.1 | Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill. |
| Long responses and chatbots | Moondream 3.1 | Lower output-token price matters most when assistants generate many completion tokens. |
| RAG or long-document work | Nano Banana 2.1 | A larger context window leaves more room for retrieved passages, conversation history, or source files. |
Related Alternatives
- Gemma 4 26B A4B (free) can replace Nano Banana 2.1 when lower sample workload cost matters most: $0.
- Gemma 4 31B (free) can replace Nano Banana 2.1 when lower sample workload cost matters most: $0.
- Lyria 3 Pro Preview can replace Nano Banana 2.1 when lower sample workload cost matters most: $0.
- Lyria 3 Clip Preview can replace Nano Banana 2.1 when lower sample workload cost matters most: $0.
- Grok 4.20 Multi-Agent offers 2M context with $2.5 sample workload cost.
- Grok 4.20 offers 2M context with $2.5 sample workload cost.
- Llama 4 Scout offers 1.31M context with $0.47 sample workload cost.
- MiMo-V2.6-Flash offers 1.05M context with $0.28 sample workload cost.
- DeepSeek V4.1 Flash · DeepSeek · #1
- Step 5 Preview · StepFun · #2
- GLM 5.3 Flash · Z.ai · #3
- MiMo-V2.6-Flash · Xiaomi · #4
Cheaper alternatives
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