API cost decision in 10 seconds

Nano Banana 2 (Gemini 3.1 Flash Image Preview) vs Rnj 1 Instruct

Pick Rnj 1 Instruct for lower cost; pick Nano Banana 2 (Gemini 3.1 Flash Image Preview) only if the larger context window matters more.

Page updated: 2026-05-26T10:03:26Z Data confirmed: 2026-05-26T12:38:15Z Prices normalized to USD per 1M tokens Sample workload: 1M input + 500K output

Budget verdict

Pick Rnj 1 Instruct for lower cost; pick Nano Banana 2 (Gemini 3.1 Flash Image Preview) only if the larger context window matters more.

On the standard 1M input plus 500K output workload, Rnj 1 Instruct is estimated at $0.22 vs $2 for Nano Banana 2 (Gemini 3.1 Flash Image Preview), saving $1.77 (88.8% lower).

Cost-first pickRnj 1 Instruct

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

Sample savings$1.7788.8%

10x traffic gap$17.75

Nano Banana 2 (Gemini 3.1 Flash Image Preview) has more context, but Rnj 1 Instruct saves $1.77 on the standard workload. At 10x that traffic, the same price gap is about $17.75. Use the calculator below to replace the sample workload with your own token volume.

Cost sensitivity

Workload Sensitivity

Same prices, different token mixes.

Rnj 1 Instruct 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)	Rnj 1 Instruct
Input-heavy / RAG	5M input + 500K output	Rnj 1 Instruct	$4	$0.82
Balanced workload	1M input + 1M output	Rnj 1 Instruct	$3.5	$0.3
Output-heavy chatbot	1M input + 5M output	Rnj 1 Instruct	$15.5	$0.9

Cheaper input Rnj 1 Instruct $0.5 vs $0.15 / 1M

Rnj 1 Instruct is $0.35 cheaper per 1M input tokens (70% lower; 3.33x difference).

Cheaper output Rnj 1 Instruct $3 vs $0.15 / 1M

Rnj 1 Instruct is $2.85 cheaper per 1M output tokens (95% lower; 20x difference).

Larger context Nano Banana 2 (Gemini 3.1 Flash Image Preview) 131.07K vs 32.77K

Nano Banana 2 (Gemini 3.1 Flash Image Preview) has 98.3K more context (4x larger).

Sample workload Rnj 1 Instruct $2 vs $0.22

Rnj 1 Instruct is $1.77 cheaper on the standard workload (88.8% 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

Rnj 1 Instruct 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

Rnj 1 Instruct has the lower input price; Rnj 1 Instruct has the lower output price; Nano Banana 2 (Gemini 3.1 Flash Image Preview) offers the larger context window. For the 1M input plus 500K output sample, Rnj 1 Instruct 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 $0.22 for Rnj 1 Instruct.

Best Fit

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

Choose Rnj 1 Instruct 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, Rnj 1 Instruct is estimated at $0.22 vs $2 for Nano Banana 2 (Gemini 3.1 Flash Image Preview), saving $1.77 (88.8% lower).
Rnj 1 Instruct is $1.77 cheaper on the standard workload (88.8% lower).
Rnj 1 Instruct is $0.35 cheaper per 1M input tokens (70% lower; 3.33x difference).
Rnj 1 Instruct is $2.85 cheaper per 1M output tokens (95% lower; 20x difference).
Nano Banana 2 (Gemini 3.1 Flash Image Preview) has 98.3K more context (4x larger).

Head-to-Head Specs

Feature	Nano Banana 2 (Gemini 3.1 Flash Image Preview) (Google)	Rnj 1 Instruct (EssentialAI)
Input Price prompt tokens per 1M	$0.5	$0.15
Completion Price per 1M tokens	$3	$0.15
Sample Workload Cost 1M input + 500K output	$2	$0.22
Context Window	131.07K	32.77K
Release Date	2026-02-26	2025-12-07

Use-Case Decision Matrix

Use case	Better pick	Why
Budget-constrained production	Rnj 1 Instruct	On the standard 1M input plus 500K output workload, Rnj 1 Instruct is estimated at $0.22 vs $2 for Nano Banana 2 (Gemini 3.1 Flash Image Preview), saving $1.77 (88.8% lower).
High-volume input processing	Rnj 1 Instruct	Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill.
Long responses and chatbots	Rnj 1 Instruct	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 Preview)	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.
DeepSeek V4 Flash offers 1.05M context with $0.2 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

EssentialAI catalog

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

Open EssentialAI 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...

Rnj 1 Instruct

Rnj-1 is an 8B-parameter, dense, open-weight model family developed by Essential AI and trained from scratch with a focus on programming, math, and scientific reasoning. The model demonstrates strong performance...