API cost decision in 10 seconds

Nano Banana 2 (Gemini 3.1 Flash Image Preview) vs GPT-5.2 Pro

Pick Nano Banana 2 (Gemini 3.1 Flash Image Preview) for lower cost; pick GPT-5.2 Pro only if the larger context window matters more.

Page updated: 2026-05-26T10:03:26Z Data confirmed: 2026-05-26T13:08:02Z Prices normalized to USD per 1M tokens Sample workload: 1M input + 500K output

Budget verdict

Pick Nano Banana 2 (Gemini 3.1 Flash Image Preview) for lower cost; pick GPT-5.2 Pro only if the larger context window matters more.

On the standard 1M input plus 500K output workload, Nano Banana 2 (Gemini 3.1 Flash Image Preview) is estimated at $2 vs $105 for GPT-5.2 Pro, saving $103 (98.1% lower).

Cost-first pickNano Banana 2 (Gemini 3.1 Flash Image Preview)

Context-first pickGPT-5.2 Pro

Sample savings$10398.1%

10x traffic gap$1030

GPT-5.2 Pro has more context, but Nano Banana 2 (Gemini 3.1 Flash Image Preview) saves $103 on the standard workload. At 10x that traffic, the same price gap is about $1030. Use the calculator below to replace the sample workload with your own token volume.

Cost sensitivity

Workload Sensitivity

Same prices, different token mixes.

Nano Banana 2 (Gemini 3.1 Flash Image Preview) 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)	GPT-5.2 Pro
Input-heavy / RAG	5M input + 500K output	Nano Banana 2 (Gemini 3.1 Flash Image Preview)	$4	$189
Balanced workload	1M input + 1M output	Nano Banana 2 (Gemini 3.1 Flash Image Preview)	$3.5	$189
Output-heavy chatbot	1M input + 5M output	Nano Banana 2 (Gemini 3.1 Flash Image Preview)	$15.5	$861

Cheaper input Nano Banana 2 (Gemini 3.1 Flash Image Preview) $0.5 vs $21 / 1M

Nano Banana 2 (Gemini 3.1 Flash Image Preview) is $20.5 cheaper per 1M input tokens (97.6% lower; 42x difference).

Cheaper output Nano Banana 2 (Gemini 3.1 Flash Image Preview) $3 vs $168 / 1M

Nano Banana 2 (Gemini 3.1 Flash Image Preview) is $165 cheaper per 1M output tokens (98.2% lower; 56x difference).

Larger context GPT-5.2 Pro 131.07K vs 400K

GPT-5.2 Pro has 268.93K more context (3.05x larger).

Sample workload Nano Banana 2 (Gemini 3.1 Flash Image Preview) $2 vs $105

Nano Banana 2 (Gemini 3.1 Flash Image Preview) is $103 cheaper on the standard workload (98.1% 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

GPT-5.2 Pro 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

Nano Banana 2 (Gemini 3.1 Flash Image Preview) has the lower input price; Nano Banana 2 (Gemini 3.1 Flash Image Preview) has the lower output price; GPT-5.2 Pro offers the larger context window. For the 1M input plus 500K output sample, Nano Banana 2 (Gemini 3.1 Flash Image Preview) 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 $105 for GPT-5.2 Pro.

Best Fit

Choose Nano Banana 2 (Gemini 3.1 Flash Image Preview) when you care most about lower input-token price, and lower output-token price.

Choose GPT-5.2 Pro when you care most about larger context window.

Decision Notes

On the standard 1M input plus 500K output workload, Nano Banana 2 (Gemini 3.1 Flash Image Preview) is estimated at $2 vs $105 for GPT-5.2 Pro, saving $103 (98.1% lower).
Nano Banana 2 (Gemini 3.1 Flash Image Preview) is $103 cheaper on the standard workload (98.1% lower).
Nano Banana 2 (Gemini 3.1 Flash Image Preview) is $20.5 cheaper per 1M input tokens (97.6% lower; 42x difference).
Nano Banana 2 (Gemini 3.1 Flash Image Preview) is $165 cheaper per 1M output tokens (98.2% lower; 56x difference).
GPT-5.2 Pro has 268.93K more context (3.05x larger).

Head-to-Head Specs

Feature	Nano Banana 2 (Gemini 3.1 Flash Image Preview) (Google)	GPT-5.2 Pro (OpenAI)
Input Price prompt tokens per 1M	$0.5	$21
Completion Price per 1M tokens	$3	$168
Sample Workload Cost 1M input + 500K output	$2	$105
Context Window	131.07K	400K
Release Date	2026-02-26	2025-12-10

Use-Case Decision Matrix

Use case	Better pick	Why
Budget-constrained production	Nano Banana 2 (Gemini 3.1 Flash Image Preview)	On the standard 1M input plus 500K output workload, Nano Banana 2 (Gemini 3.1 Flash Image Preview) is estimated at $2 vs $105 for GPT-5.2 Pro, saving $103 (98.1% 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	Nano Banana 2 (Gemini 3.1 Flash Image Preview)	Lower output-token price matters most when assistants generate many completion tokens.
RAG or long-document work	GPT-5.2 Pro	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 Multi-Agent offers 2M context with $5 sample workload cost.
Grok 4.20 offers 2M context with $2.5 sample workload cost.
GPT-5.5 offers 1.05M context with $20 sample workload cost.

Popular competitors

DeepSeek V4 Flash · DeepSeek · #1
Hy3 preview · Tencent · #2
Claude Opus 4.7 · Anthropic · #3
Claude Sonnet 4.6 · Anthropic · #4

Cheaper alternatives

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

Open cheapest models

Larger context alternatives

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

Open largest context models

Provider catalogs

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

Open provider hubs

Google catalog

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

Open Google models

OpenAI catalog

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

Open OpenAI models

Nano Banana 2 (Gemini 3.1 Flash Image Preview)

Gemini 3.1 Flash Image Preview, 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...

GPT-5.2 Pro

GPT-5.2 Pro is OpenAI’s most advanced model, offering major improvements in agentic coding and long context performance over GPT-5 Pro. It is optimized for complex tasks that require step-by-step reasoning,...