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Gemini Nano Banana 2.1 vs Grok 4.5

Compare Gemini Nano Banana 2.1 from Google and Grok 4.5 from Grok on key metrics including benchmarks, price, context length, and other model features. Access both models and hundreds of others through the AIHubMix API.

GoogleGemini Nano Banana 2.1GrokGrok 4.5
+ Add model · 2/4
Google logo
Gemini Nano Banana 2.1
Google · text, image → text

Gemini Nano Banana 2.1 (gemini-nano-banana-2.1) is Google's latest high-efficiency image generation and conversational editing model. As an upgraded version of Nano Banana 2 (Gemini 3.1 Flash Image), it significantly improves visual quality, prompt adherence, role consistency in multi-turn conversations, and text rendering while maintaining Flash-level speed and cost efficiency. It can be regarded as a more efficient counterpart to Gemini 3 Pro Image (Nano Banana Pro).

Input$1.5 /M
Output$7.5 /M
Cache read$0.15 /M
Details
Grok logo
Grok 4.5
Grok · text, image → text

Grok 4.5 was trained on datasets spanning knowledge in coding, science, engineering, and math. With both intelligent and efficient reasoning, Grok 4.5 excels at real engineering tasks and exceeds comparable leading models at these tasks.

Input$2 /M
Output$6 /M
Cache read$0.5 /M
Details

Pricing & Specifications

Prices are per million tokens. Time to First Token and throughput are rolling averages measured on AIHubMix.

Gemini Nano Banana 2.1
Grok 4.5
Input /M
$1.5
$2
Output /M
$7.5
$6
Cache read /M
$0.15
$0.5
Context length
65,536
500,000
Max output
0
500,000
Time to First Token
13.5 s
3.2 s
Throughput
67.4 tok/s
50.4 tok/s
Modalities
textimage
textimage
Supported Parameters
thinkingtoolsfunction callingstructured outputslong context
API Formats
Released
October 7, 2026
July 2026

Promotional prices show the discounted rate; see each model page for promotion windows.

Activity Past 30 Days

Daily traffic served through AIHubMix — how demand for each model is trending.

gemini-nano-banana-2.1grok-4.5

Tokens / day

-

Requests / day

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Performance Past 3 Days

Measured on real AIHubMix traffic, hourly buckets. Gaps mean no traffic in that hour.

gemini-nano-banana-2.1grok-4.5

Throughput (tok/s)

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TTFT (s)

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Uptime (%)

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Cost calculator

Estimate your monthly bill for the same workload on each model.

Gemini Nano Banana 2.1
$203 /mo
Grok 4.5
$210 /mo

Monthly = daily × 30. Discounted rates applied where a promotion is active.

FAQ

Which is cheaper: Gemini Nano Banana 2.1, Grok 4.5?

Grok 4.5: $6/M output tokens; Gemini Nano Banana 2.1: $7.5/M. Use the cost calculator above to estimate your own workload.

Which responds faster?

Grok 4.5: 3.2s time to first token measured on AIHubMix; see the live performance charts above for how each model behaves across the day.

How large is each context window?

Gemini Nano Banana 2.1 accepts 65,536 and Grok 4.5 accepts 500,000 input tokens.

Which one generates tokens faster?

Gemini Nano Banana 2.1 at 67.4 tok/s and Grok 4.5 at 50.4 tok/s, measured as output throughput on AIHubMix — a separate metric from time to first token.

What inputs and capabilities does each model support?

Gemini Nano Banana 2.1 accepts text and image input; Grok 4.5 accepts text and image input and supports thinking, tool calling, function calling, structured outputs and long context.

Can I call Gemini Nano Banana 2.1 and Grok 4.5 with the same API key?

Yes. AIHubMix serves every model on this page behind one OpenAI-compatible endpoint, so switching between them is a one-line change to the model field — no second account, key or SDK.

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