API cost decision in 10 seconds

Nano Banana 2 (Gemini 3.1 Flash Image) vs Nemotron 3.5 Content Safety (free)

Pick Nemotron 3.5 Content Safety (free) for lower cost; pick Nano Banana 2 (Gemini 3.1 Flash Image) only if the larger context window matters more.

Page updated: 2026-06-18T05:07:18Z Data confirmed: 2026-08-23T13:07:49Z Prices normalized to USD per 1M tokens Sample workload: 1M input + 500K output

Budget verdict

Pick Nemotron 3.5 Content Safety (free) for lower cost; pick Nano Banana 2 (Gemini 3.1 Flash Image) only if the larger context window matters more.

On the standard 1M input plus 500K output workload, Nemotron 3.5 Content Safety (free) is estimated at $0 vs $2 for Nano Banana 2 (Gemini 3.1 Flash Image), saving $2 (100% lower).

Cost-first pickNemotron 3.5 Content Safety (free)

Context-first pickNano Banana 2 (Gemini 3.1 Flash Image)

Sample savings$2100%

10x traffic gap$20

Nano Banana 2 (Gemini 3.1 Flash Image) has more context, but Nemotron 3.5 Content Safety (free) saves $2 on the standard workload. At 10x that traffic, the same price gap is about $20. Use the calculator below to replace the sample workload with your own token volume.

Cost sensitivity

Workload Sensitivity

Same prices, different token mixes.

Nemotron 3.5 Content Safety (free) 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)	Nemotron 3.5 Content Safety (free)
Input-heavy / RAG	5M input + 500K output	Nemotron 3.5 Content Safety (free)	$4	$0
Balanced workload	1M input + 1M output	Nemotron 3.5 Content Safety (free)	$3.5	$0
Output-heavy chatbot	1M input + 5M output	Nemotron 3.5 Content Safety (free)	$15.5	$0

Cheaper input Nemotron 3.5 Content Safety (free) $0.5 vs $0 / 1M

Nemotron 3.5 Content Safety (free) is free for input tokens while Nano Banana 2 (Gemini 3.1 Flash Image) costs $0.5 per 1M tokens.

Cheaper output Nemotron 3.5 Content Safety (free) $3 vs $0 / 1M

Nemotron 3.5 Content Safety (free) is free for output tokens while Nano Banana 2 (Gemini 3.1 Flash Image) costs $3 per 1M tokens.

Larger context Nano Banana 2 (Gemini 3.1 Flash Image) 131.07K vs 128K

Nano Banana 2 (Gemini 3.1 Flash Image) has 3.07K more context (1.02x larger).

Sample workload Nemotron 3.5 Content Safety (free) $2 vs $0

Nemotron 3.5 Content Safety (free) is free for the standard workload while the other model is estimated at $2.

Estimate your workload cost

Your Workload Cost

Prices are normalized to USD per 1M tokens.

Monthly input tokens Monthly output tokens

Nano Banana 2 (Gemini 3.1 Flash Image) Calculating… Estimated API cost

Nemotron 3.5 Content Safety (free) Calculating… Estimated API cost

Cheaper for this workload Calculating… Difference: calculating…

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

Verdict

Nemotron 3.5 Content Safety (free) has the lower input price; Nemotron 3.5 Content Safety (free) has the lower output price; Nano Banana 2 (Gemini 3.1 Flash Image) offers the larger context window. For the 1M input plus 500K output sample, Nemotron 3.5 Content Safety (free) 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) and $0 for Nemotron 3.5 Content Safety (free).

Best Fit

Choose Nano Banana 2 (Gemini 3.1 Flash Image) when you care most about larger context window.

Choose Nemotron 3.5 Content Safety (free) when you care most about lower input-token price, and lower output-token price.

Decision Notes

On the standard 1M input plus 500K output workload, Nemotron 3.5 Content Safety (free) is estimated at $0 vs $2 for Nano Banana 2 (Gemini 3.1 Flash Image), saving $2 (100% lower).
Nemotron 3.5 Content Safety (free) is free for the standard workload while the other model is estimated at $2.
Nemotron 3.5 Content Safety (free) is free for input tokens while Nano Banana 2 (Gemini 3.1 Flash Image) costs $0.5 per 1M tokens.
Nemotron 3.5 Content Safety (free) is free for output tokens while Nano Banana 2 (Gemini 3.1 Flash Image) costs $3 per 1M tokens.
Nano Banana 2 (Gemini 3.1 Flash Image) has 3.07K more context (1.02x larger).

Head-to-Head Specs

Feature	Nano Banana 2 (Gemini 3.1 Flash Image) (Google)	Nemotron 3.5 Content Safety (free) (NVIDIA)
Input Price prompt tokens per 1M	$0.5	$0
Completion Price per 1M tokens	$3	$0
Sample Workload Cost 1M input + 500K output	$2	$0
Context Window	131.07K	128K
Release Date	2026-06-18	2026-06-04

Use-Case Decision Matrix

Use case	Better pick	Why
Budget-constrained production	Nemotron 3.5 Content Safety (free)	On the standard 1M input plus 500K output workload, Nemotron 3.5 Content Safety (free) is estimated at $0 vs $2 for Nano Banana 2 (Gemini 3.1 Flash Image), saving $2 (100% lower).
High-volume input processing	Nemotron 3.5 Content Safety (free)	Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill.
Long responses and chatbots	Nemotron 3.5 Content Safety (free)	Lower output-token price matters most when assistants generate many completion tokens.
RAG or long-document work	Nano Banana 2 (Gemini 3.1 Flash Image)	A larger context window leaves more room for retrieved passages, conversation history, or source files.

Related Alternatives

Same-provider lower-cost swaps

Gemma 4 26B A4B (free) can replace Nano Banana 2 (Gemini 3.1 Flash Image) when lower sample workload cost matters most: $0.
Gemma 4 31B (free) can replace Nano Banana 2 (Gemini 3.1 Flash Image) when lower sample workload cost matters most: $0.
Lyria 3 Pro Preview can replace Nano Banana 2 (Gemini 3.1 Flash Image) when lower sample workload cost matters most: $0.
Lyria 3 Clip Preview can replace Nano Banana 2 (Gemini 3.1 Flash Image) when lower sample workload cost matters most: $0.

Larger context near this budget

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.
DeepSeek V4 Flash 0731 offers 1.31M context with $0.17 sample workload cost.
DeepSeek V4 Flash Latest offers 1.31M context with $0.11 sample workload cost.

Popular competitors

DeepSeek V4 Flash 0731 · DeepSeek · #1
MiMo-V2.5 · Xiaomi · #2
Hy3 · Tencent · #3
Ox Alpha · stealth · #4

Cheaper alternatives

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Larger context alternatives

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Provider catalogs

Compare models within provider hubs before choosing a final API vendor.

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Google catalog

Review all tracked Google models before deciding whether this matchup is the right shortlist.

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NVIDIA catalog

Check other NVIDIA models with comparable pricing, context, or release timing.

Open NVIDIA models

Nano Banana 2 (Gemini 3.1 Flash Image)

Gemini 3.1 Flash Image, a.k.a. "Nano Banana 2," is Google’s latest state of the art image generation and editing model, delivering Pro-level visual quality at Flash speed. It combines advanced...

Nemotron 3.5 Content Safety (free)

NVIDIA Nemotron 3.5 Content Safety is a compact 4B-parameter multimodal guardrail model from NVIDIA, fine-tuned from Google Gemma-3-4B. It moderates both inputs to and responses from LLMs and VLMs, accepting...