Nano Banana 2 (Gemini 3.1 Flash Image Preview) is $0.07 cheaper per 1M input tokens (12.3% lower; 1.14x difference).
API cost decision in 10 seconds
Nano Banana 2 (Gemini 3.1 Flash Image Preview) vs Kimi K2 0711
Pick Kimi K2 0711 when budget is the priority.
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Data confirmed:
Prices normalized to USD per 1M tokens
Sample workload: 1M input + 500K output
Budget verdict
Pick Kimi K2 0711 when budget is the priority.
On the standard 1M input plus 500K output workload, Kimi K2 0711 is estimated at $1.72 vs $2 for Nano Banana 2 (Gemini 3.1 Flash Image Preview), saving $0.28 (14% lower).
Cost-first pickKimi K2 0711
Context-first pickBoth models
Sample savings$0.2814%
10x traffic gap$2.8
The reported context window is tied, so cost and provider fit carry more weight. At 10x that traffic, the same price gap is about $2.8. Use the calculator below to replace the sample workload with your own token volume.
Cost sensitivity
Workload Sensitivity
Kimi K2 0711 stays cheaper across input-heavy, balanced, and output-heavy sample workloads.
| Workload shape | Token mix | Better pick | Nano Banana 2 (Gemini 3.1 Flash Image Preview) | Kimi K2 0711 |
|---|---|---|---|---|
| Input-heavy / RAG | 5M input + 500K output | Kimi K2 0711 | $4 | $4 |
| Balanced workload | 1M input + 1M output | Kimi K2 0711 | $3.5 | $2.87 |
| Output-heavy chatbot | 1M input + 5M output | Kimi K2 0711 | $15.5 | $12.07 |
Kimi K2 0711 is $0.7 cheaper per 1M output tokens (23.3% lower; 1.3x difference).
Both models report the same context window at 131.07K tokens.
Kimi K2 0711 is $0.28 cheaper on the standard workload (14% 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 2 (Gemini 3.1 Flash Image Preview) has the lower input price; Kimi K2 0711 has the lower output price; both models report the same context window. For the 1M input plus 500K output sample, Kimi K2 0711 is cheaper for the standard workload.
For a 1M input token plus 500K output token workload, the estimated API cost is $2 for Nano Banana 2 (Gemini 3.1 Flash Image Preview) and $1.72 for Kimi K2 0711.
Choose Nano Banana 2 (Gemini 3.1 Flash Image Preview) when you care most about lower input-token price.
Choose Kimi K2 0711 when you care most about lower output-token price.
- On the standard 1M input plus 500K output workload, Kimi K2 0711 is estimated at $1.72 vs $2 for Nano Banana 2 (Gemini 3.1 Flash Image Preview), saving $0.28 (14% lower).
- Kimi K2 0711 is $0.28 cheaper on the standard workload (14% lower).
- Nano Banana 2 (Gemini 3.1 Flash Image Preview) is $0.07 cheaper per 1M input tokens (12.3% lower; 1.14x difference).
- Kimi K2 0711 is $0.7 cheaper per 1M output tokens (23.3% lower; 1.3x difference).
- Both models report the same context window at 131.07K tokens.
| Feature | Nano Banana 2 (Gemini 3.1 Flash Image Preview) (Google) | Kimi K2 0711 (MoonshotAI) |
|---|---|---|
| Input Price prompt tokens per 1M | $0.5 | $0.57 |
| Completion Price per 1M tokens | $3 | $2.3 |
| Sample Workload Cost 1M input + 500K output | $2 | $1.72 |
| Context Window | 131.07K | 131.07K |
| Release Date | ||
| Popularity | #129 | #140 |
Use-Case Decision Matrix
| Use case | Better pick | Why |
|---|---|---|
| Budget-constrained production | Kimi K2 0711 | On the standard 1M input plus 500K output workload, Kimi K2 0711 is estimated at $1.72 vs $2 for Nano Banana 2 (Gemini 3.1 Flash Image Preview), saving $0.28 (14% lower). |
| High-volume input processing | Nano Banana 2 (Gemini 3.1 Flash Image Preview) | Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill. |
| Long responses and chatbots | Kimi K2 0711 | Lower output-token price matters most when assistants generate many completion tokens. |
| RAG or long-document work | Tie | A larger context window leaves more room for retrieved passages, conversation history, or source files. |
Related Alternatives
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- Lyria 3 Pro Preview can replace Nano Banana 2 (Gemini 3.1 Flash Image Preview) when lower sample workload cost matters most: $0.
- Llama 4 Scout offers 10M context with $0.23 sample workload cost.
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- Owl Alpha offers 1.05M context with $0 sample workload cost.
- DeepSeek V4 Flash offers 1.05M context with $0.2 sample workload cost.
- DeepSeek V4 Flash · DeepSeek · #1
- Hy3 preview · Tencent · #2
- Claude Opus 4.7 · Anthropic · #3
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