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Model comparison · Updated 10 Oct 2026

Nano Banana 2 (Gemini 3.1 Flash Image) vs Qwen3.5 397B A17B

Nano Banana 2 (Gemini 3.1 Flash Image) is about 1.1× cheaper on input ($0.50 against $0.55 per 1M tokens) and on output. Qwen3.5 397B A17B has the larger context window (262K against 131K tokens). For a support chatbot at 10,000 chats a day, the standard-tier bill is about $495 a month for Nano Banana 2 (Gemini 3.1 Flash Image) and $563 for Qwen3.5 397B A17B.

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ModelsAtlas. “Nano Banana 2 (Gemini 3.1 Flash Image) vs Qwen3.5 397B A17B”. Retrieved 10 Oct 2026. https://modelsatlas.com/compare/google/gemini-3-1-flash-image/vs/qwen/3-5-397b-a17b

Model A

Nano Banana 2 (Gemini 3.1 Flash Image)

by Google · weights not marked open · GRIDD3

Input / 1M
$0.50
observed We measured
Source
Our catalogue
Retrieved
17 Aug 2026
Output / 1M$3.00
Context131K
vs

Model B

Qwen3.5 397B A17B

by Qwen (Alibaba) · weights not marked open · GRIDD4

Input / 1M
$0.55
observed We measured
Source
Our catalogue
Retrieved
10 Oct 2026
Output / 1M$3.50
Context262K

Key numbers

Standard tier · highlighted = better

Nano Banana 2 (Gemini 3.1 Flash Image)
Qwen3.5 397B A17B
Input / 1M tokens
$0.50
$0.55
Output / 1M tokens
$3.00
$3.50
Batch input / output
Not listed
Not listed
Context window
131,072
262,144
Input types
Not disclosed
Not disclosed
Weights
Not marked open
Not marked open
Tiers listed
standard
standard
Prices checked
2026-08-17
2026-10-10

What it costs for real workloads

Monthly, standard tier, 30 days

Support chatbot10k chats/day · 1.5k in, 300 out
$495/mo
$563/mo
RAG over documents2k queries/day · 12k in, 500 out
$450/mo
$501/mo
Coding agent300 tasks/day · 60k in, 8k out
$486/mo
$549/mo

Nano Banana 2 (Gemini 3.1 Flash Image)   Qwen3.5 397B A17B · Derived from the standard-tier prices above, input and output tokens per request as stated, 30 days. Excludes caching discounts and batch. Try your own numbers.

On the atlas

Price band (A–H) × context band (1–6)

1 square apart. Qwen3.5 397B A17B (D4) sits 1 context band larger than Nano Banana 2 (Gemini 3.1 Flash Image) (D3).

Same square as Nano Banana 2 (Gemini 3.1 Flash Image): Codestral 2508 ($0.30), Command A+ ($0.30), MiniMax M2 ($0.30). Same square as Qwen3.5 397B A17B: Qwen3 Coder 480B A35B ($0.30), Qwen3.6 27B ($0.32), Devstral 2 2512 ($0.40). Open D3 · Open D4

AFreeB<$0.10C$0.10–0.30D$0.30–1E$1–3F$3–10G$10–30H$30+1<32K232–128K3128–256K4256K–1M51M6>1MINPUT PRICE PER 1M TOKENS →CONTEXT WINDOW ↑ · position within a square follows the real valueLlama 3.1 70B Instruct · D3Mistral Medium 3 · D3Mistral Medium 3.1 · D3R1 0528 · D3DeepSeek V3 · D3Command A+ · D3Devstral 2 2512 · D4Qwen3.6 27B · D4Qwen3 Coder 480B A35B · D4MiniMax M1 · D5Gemini 3 Flash Preview · D5Nano Banana 2 (Gemini 3.1 Flash Image)Nano Banana 2 (Gemini 3.1 Flash Image)Qwen3.5 397B A17BQwen3.5 397B A17B
Nano Banana 2 (Gemini 3.1 Flash Image)Qwen3.5 397B A17BNearest neighboursOpen weights
View the map as a table (3 squares)
SquarePrice bandContext bandModels
GRIDD3$0.30–1128–256KNano Banana 2 (Gemini 3.1 Flash Image), Llama 3.1 70B Instruct, Mistral Medium 3, Mistral Medium 3.1, R1 0528, DeepSeek V3, Command A+
GRIDD4$0.30–1256K–1MQwen3.5 397B A17B, Devstral 2 2512, Qwen3.6 27B, Qwen3 Coder 480B A35B
GRIDD5$0.30–11MMiniMax M1, Gemini 3 Flash Preview

Capabilities side by side

Only what our records list

Nano Banana 2 (Gemini 3.1 Flash Image)
Qwen3.5 397B A17B
Vision input
Not disclosed
Not disclosed
Audio input
Not disclosed
Not disclosed
Open weights
Not marked open
Not marked open
Batch tier
Not listed
Not listed
Free tier
Not listed
Not listed
Thinking tier
Not listed
Not listed

Neither record lists input types, so we do not claim any.

Which should you choose?

Editorial

Choose Nano Banana 2 (Gemini 3.1 Flash Image) if…

  • you pay by the token: it costs $0.50 per 1M input against $0.55
  • output dominates your bill: $3.00 per 1M output against $3.50

Choose Qwen3.5 397B A17B if…

  • your prompts are long: it takes 262,144 tokens against 131,072

Each reason is a fact from the tables above. Picking between them is our judgement, and we do not benchmark quality: price and context are what we can measure, so test both on your own prompts before you commit.

Questions

Is Nano Banana 2 (Gemini 3.1 Flash Image) better than Qwen3.5 397B A17B?
We do not benchmark quality, so we cannot say. On the recorded numbers: Nano Banana 2 (Gemini 3.1 Flash Image) is about 1.1× cheaper on input ($0.50 against $0.55 per 1M tokens) and on output. Qwen3.5 397B A17B has the larger context window (262K against 131K tokens). For a support chatbot at 10,000 chats a day, the standard-tier bill is about $495 a month for Nano Banana 2 (Gemini 3.1 Flash Image) and $563 for Qwen3.5 397B A17B. Which is better for you depends on your task; test both on your own prompts.
Which is cheaper, Nano Banana 2 (Gemini 3.1 Flash Image) or Qwen3.5 397B A17B?
Nano Banana 2 (Gemini 3.1 Flash Image): $0.50 against $0.55 per 1M input tokens, and $3.00 against $3.50 per 1M output, on standard pricing.
How much does each cost per 1M tokens?
Nano Banana 2 (Gemini 3.1 Flash Image): $0.50 input and $3.00 output. Qwen3.5 397B A17B: $0.55 input and $3.50 output. Standard tier, USD.
Which has the larger context window?
Qwen3.5 397B A17B, with 262,144 tokens. Nano Banana 2 (Gemini 3.1 Flash Image) has 131,072 tokens.
Do both offer batch pricing?
Neither lists a batch tier in our catalogue.
Can both read images or audio?
Input types recorded for Nano Banana 2 (Gemini 3.1 Flash Image): none recorded. For Qwen3.5 397B A17B: none recorded. Where a record lists none we say so rather than guess; check each vendor's documentation before relying on a capability.
Is either model open-weight?
Nano Banana 2 (Gemini 3.1 Flash Image): not marked open-weight in our records. Qwen3.5 397B A17B: not marked open-weight in our records.
What would each cost for a support chatbot?
At 10,000 chats a day, 1,500 input and 300 output tokens each, 30 days, standard tier: about $495 a month for Nano Banana 2 (Gemini 3.1 Flash Image) and $563 for Qwen3.5 397B A17B. This is our calculation from the listed prices, not a quote.

About the two models

Nano Banana 2 (Gemini 3.1 Flash Image)

By Google. $0.50 input and $3.00 output per 1M tokens, 131K context, atlas square D3. Tiers listed: standard.

Full specs & pricing →

Qwen3.5 397B A17B

By Qwen (Alibaba). $0.55 input and $3.50 output per 1M tokens, 262K context, atlas square D4. Tiers listed: standard.

Full specs & pricing →

Compare Nano Banana 2 (Gemini 3.1 Flash Image) with…

Compare Qwen3.5 397B A17B with…

Keep going in your AI

Opens with this page as the source. We add nothing else to the prompt.