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Gemini 2.5 Flash Image vs Grok 4.5

Compare Gemini 2.5 Flash Image 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 2.5 Flash ImageGrokGrok 4.5
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Google logo
Gemini 2.5 Flash Image
Google · image, text → text

Gemini 2.5 Flash Image (Nano-Banana) is a state-of-the-art image generation and editing model that enables seamless blending of multiple images into a single composition while maintaining character consistency for rich visual storytelling. It supports precise, targeted image transformations through natural language instructions and leverages built-in world knowledge for both image generation and editing, making it well suited for creative design, content production, advertising, and visual expression workflows.

Input$0.30 /M
Output$2.50 /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$2.00 /M
Output$6.00 /M
Details

Pricing & Specifications

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

Gemini 2.5 Flash Image
Grok 4.5
Input /M
$0.30
$2.00
Output /M
$2.50
$6.00
Cache read /M
$0.30
$0.50
Context length
32,800
500,000
Max output
8,000
500,000
Time to First Token
5.9 s
1.9 s
Throughput
76.8 tok/s
30.7 tok/s
Modalities
imagetext
textimage
Supported Parameters
thinkingtoolsfunction callingstructured outputslong context
API Formats
Released
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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-2.5-flash-imagegrok-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-2.5-flash-imagegrok-4.5

Throughput (tok/s)

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TTFT (s)

-

Uptime (%)

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Cost calculator

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

Gemini 2.5 Flash Image
$55.49 /mo
Grok 4.5
$210 /mo

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

FAQ

Which is cheaper: Gemini 2.5 Flash Image, Grok 4.5?

Gemini 2.5 Flash Image: $2.50/M output tokens; Grok 4.5: $6.00/M. Use the cost calculator above to estimate your own workload.

Which responds faster?

Grok 4.5: 1.9s 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 2.5 Flash Image accepts 32,800 and Grok 4.5 accepts 500,000 input tokens. Maximum output per request is 8,000 tokens on Gemini 2.5 Flash Image and 500,000 tokens on Grok 4.5.

Which one generates tokens faster?

Gemini 2.5 Flash Image at 76.8 tok/s and Grok 4.5 at 30.7 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 2.5 Flash Image accepts image and text 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 2.5 Flash Image 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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