API cost decision in 10 seconds

Nano Banana 2 (Gemini 3.1 Flash Image Preview) vs Qwen3.5 Plus 2026-02-15

Pick Qwen3.5 Plus 2026-02-15 when budget and context both matter.

Pricing data updated: 2026-05-26T11:08:00Z Prices normalized to USD per 1M tokens Sample workload: 1M input + 500K output

Budget verdict

Pick Qwen3.5 Plus 2026-02-15 when budget and context both matter.

On the standard 1M input plus 500K output workload, Qwen3.5 Plus 2026-02-15 is estimated at $1.04 vs $2 for Nano Banana 2 (Gemini 3.1 Flash Image Preview), saving $0.96 (48% lower).

Cost-first pickQwen3.5 Plus 2026-02-15

Context-first pickQwen3.5 Plus 2026-02-15

Sample savings$0.9648%

10x traffic gap$9.6

Qwen3.5 Plus 2026-02-15 is cheaper on the standard workload and also has the larger context window. At 10x that traffic, the same price gap is about $9.6. Use the calculator below to replace the sample workload with your own token volume.

Cost sensitivity

Workload Sensitivity

Same prices, different token mixes.

Qwen3.5 Plus 2026-02-15 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)	Qwen3.5 Plus 2026-02-15
Input-heavy / RAG	5M input + 500K output	Qwen3.5 Plus 2026-02-15	$4	$2.08
Balanced workload	1M input + 1M output	Qwen3.5 Plus 2026-02-15	$3.5	$1.82
Output-heavy chatbot	1M input + 5M output	Qwen3.5 Plus 2026-02-15	$15.5	$8.06

Cheaper input Qwen3.5 Plus 2026-02-15 $0.5 vs $0.26 / 1M

Qwen3.5 Plus 2026-02-15 is $0.24 cheaper per 1M input tokens (48% lower; 1.92x difference).

Cheaper output Qwen3.5 Plus 2026-02-15 $3 vs $1.56 / 1M

Qwen3.5 Plus 2026-02-15 is $1.44 cheaper per 1M output tokens (48% lower; 1.92x difference).

Larger context Qwen3.5 Plus 2026-02-15 131.07K vs 1M

Qwen3.5 Plus 2026-02-15 has 868.93K more context (7.63x larger).

Sample workload Qwen3.5 Plus 2026-02-15 $2 vs $1.04

Qwen3.5 Plus 2026-02-15 is $0.96 cheaper on the standard workload (48% lower).

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 Preview) Calculating… Estimated API cost

Qwen3.5 Plus 2026-02-15 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

Qwen3.5 Plus 2026-02-15 has the lower input price; Qwen3.5 Plus 2026-02-15 has the lower output price; Qwen3.5 Plus 2026-02-15 offers the larger context window. For the 1M input plus 500K output sample, Qwen3.5 Plus 2026-02-15 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 $1.04 for Qwen3.5 Plus 2026-02-15.

Best Fit

Choose Nano Banana 2 (Gemini 3.1 Flash Image Preview) when its provider, model quality, latency, or availability is more important than the numeric price/context winner.

Choose Qwen3.5 Plus 2026-02-15 when you care most about lower input-token price, lower output-token price, and larger context window.

Decision Notes

On the standard 1M input plus 500K output workload, Qwen3.5 Plus 2026-02-15 is estimated at $1.04 vs $2 for Nano Banana 2 (Gemini 3.1 Flash Image Preview), saving $0.96 (48% lower).
Qwen3.5 Plus 2026-02-15 is $0.96 cheaper on the standard workload (48% lower).
Qwen3.5 Plus 2026-02-15 is $0.24 cheaper per 1M input tokens (48% lower; 1.92x difference).
Qwen3.5 Plus 2026-02-15 is $1.44 cheaper per 1M output tokens (48% lower; 1.92x difference).
Qwen3.5 Plus 2026-02-15 has 868.93K more context (7.63x larger).

Head-to-Head Specs

Feature	Nano Banana 2 (Gemini 3.1 Flash Image Preview) (Google)	Qwen3.5 Plus 2026-02-15 (Qwen)
Input Price prompt tokens per 1M	$0.5	$0.26
Completion Price per 1M tokens	$3	$1.56
Sample Workload Cost 1M input + 500K output	$2	$1.04
Context Window	131.07K	1M
Release Date	2026-02-26	2026-02-16

Use-Case Decision Matrix

Use case	Better pick	Why
Budget-constrained production	Qwen3.5 Plus 2026-02-15	On the standard 1M input plus 500K output workload, Qwen3.5 Plus 2026-02-15 is estimated at $1.04 vs $2 for Nano Banana 2 (Gemini 3.1 Flash Image Preview), saving $0.96 (48% lower).
High-volume input processing	Qwen3.5 Plus 2026-02-15	Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill.
Long responses and chatbots	Qwen3.5 Plus 2026-02-15	Lower output-token price matters most when assistants generate many completion tokens.
RAG or long-document work	Qwen3.5 Plus 2026-02-15	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 Preview) when lower sample workload cost matters most: $0.
Gemma 4 31B (free) can replace Nano Banana 2 (Gemini 3.1 Flash Image Preview) when lower sample workload cost matters most: $0.
Lyria 3 Pro Preview can replace Nano Banana 2 (Gemini 3.1 Flash Image Preview) when lower sample workload cost matters most: $0.
Lyria 3 Clip Preview can replace Nano Banana 2 (Gemini 3.1 Flash Image Preview) when lower sample workload cost matters most: $0.

Larger context near this budget

Llama 4 Scout offers 10M context with $0.23 sample workload cost.
Grok 4.20 offers 2M context with $2.5 sample workload cost.
Owl Alpha offers 1.05M context with $0 sample workload cost.
Gemini 3.1 Flash Lite offers 1.05M context with $1 sample workload cost.

Popular competitors

No popular competitor is currently available.

Cheaper alternatives

Review low-cost models sorted by a standard 1M input plus 500K output workload.

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Larger context alternatives

Find models with larger context windows for RAG, long documents, and codebase review.

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Provider catalogs

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Google catalog

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

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Qwen catalog

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

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