API cost decision in 10 seconds

Inkling (free) vs Nano Banana 2 (Gemini 3.1 Flash Image)

Pick Inkling (free) when budget and context both matter.

Page updated: 2026-08-21T20:07:50Z Data confirmed: 2026-08-23T11:07:50Z Prices normalized to USD per 1M tokens Sample workload: 1M input + 500K output

Budget verdict

Pick Inkling (free) when budget and context both matter.

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

Cost-first pickInkling (free)

Context-first pickInkling (free)

Sample savings$2100%

10x traffic gap$20

Inkling (free) is cheaper on the standard workload and also has the larger context window. 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.

Inkling (free) stays cheaper across input-heavy, balanced, and output-heavy sample workloads.

Workload shape	Token mix	Better pick	Inkling (free)	Nano Banana 2 (Gemini 3.1 Flash Image)
Input-heavy / RAG	5M input + 500K output	Inkling (free)	$0	$4
Balanced workload	1M input + 1M output	Inkling (free)	$0	$3.5
Output-heavy chatbot	1M input + 5M output	Inkling (free)	$0	$15.5

Cheaper input Inkling (free) $0 vs $0.5 / 1M

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

Cheaper output Inkling (free) $0 vs $3 / 1M

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

Larger context Inkling (free) 262.14K vs 131.07K

Inkling (free) has 131.07K more context (2x larger).

Sample workload Inkling (free) $0 vs $2

Inkling (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

Inkling (free) Calculating… Estimated API cost

Nano Banana 2 (Gemini 3.1 Flash Image) 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

Inkling (free) has the lower input price; Inkling (free) has the lower output price; Inkling (free) offers the larger context window. For the 1M input plus 500K output sample, Inkling (free) is cheaper for the standard workload.

For a 1M input token plus 500K output token workload, the estimated API cost is $0 for Inkling (free) and $2 for Nano Banana 2 (Gemini 3.1 Flash Image).

Best Fit

Choose Inkling (free) when you care most about lower input-token price, lower output-token price, and larger context window.

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

Decision Notes

On the standard 1M input plus 500K output workload, Inkling (free) is estimated at $0 vs $2 for Nano Banana 2 (Gemini 3.1 Flash Image), saving $2 (100% lower).
Inkling (free) is free for the standard workload while the other model is estimated at $2.
Inkling (free) is free for input tokens while Nano Banana 2 (Gemini 3.1 Flash Image) costs $0.5 per 1M tokens.
Inkling (free) is free for output tokens while Nano Banana 2 (Gemini 3.1 Flash Image) costs $3 per 1M tokens.
Inkling (free) has 131.07K more context (2x larger).

Head-to-Head Specs

Feature	Inkling (free) (Thinking Machines)	Nano Banana 2 (Gemini 3.1 Flash Image) (Google)
Input Price prompt tokens per 1M	$0	$0.5
Completion Price per 1M tokens	$0	$3
Sample Workload Cost 1M input + 500K output	$0	$2
Context Window	262.14K	131.07K
Release Date	2026-07-17	2026-06-18

Use-Case Decision Matrix

Use case	Better pick	Why
Budget-constrained production	Inkling (free)	On the standard 1M input plus 500K output workload, Inkling (free) is estimated at $0 vs $2 for Nano Banana 2 (Gemini 3.1 Flash Image), saving $2 (100% lower).
High-volume input processing	Inkling (free)	Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill.
Long responses and chatbots	Inkling (free)	Lower output-token price matters most when assistants generate many completion tokens.
RAG or long-document work	Inkling (free)	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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Thinking Machines catalog

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Google catalog

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Open Google models

Inkling (free)

Inkling is an open-weight multimodal mixture-of-experts model from Thinking Machines Lab, with 41B active parameters out of 975B total. It is designed for general-purpose reasoning, coding, agentic and tool-use systems,...

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...