Models

GPT Image 2 vs Grok 4.5

Output tokens cost $30.00 per million on GPT Image 2 and $6.00 per million on Grok 4.5. Input tokens cost $5.00 per million on GPT Image 2 and $2.00 per million on Grok 4.5. Cached input tokens are billed at $5.00 per million on GPT Image 2 and $0.50 per million on Grok 4.5.

OpenAIGPT Image 2GrokGrok 4.5
OpenAI logo
GPT Image 2
OpenAI · text, image → text

GPT-image-2 is OpenAI's latest cutting-edge image generation model. Key value adds include better performance, quality, editing controls, and face preservation. (Currently the model's image generation time may be >5 minutes; it is recommended to set the client timeout to ≥10 minutes.) The model supports high input_fidelity and adding/removing one aspect of the image while retaining others. This model includes improvements in aspect ratio, resolution, and editing capabilities.

Input$5.00 /M
Output$30.00 /M
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

Pricing & Specifications

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

GPT Image 2
Grok 4.5
Input /M
$5.00
$2.00
Output /M
$30.00
$6.00
Cache read /M
$5.00
$0.50
Context length
0
500,000
Max output
0
500,000
Time to First Token
-
1.9 s
Throughput
-
26.6 tok/s
Modalities
textimage
textimage
Supported Parameters
thinkingtoolsfunction callingstructured outputslong context
API Formats
Released
-
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.

gpt-image-2grok-4.5

Tokens / day

-

Requests / day

-

Performance Past 3 Days

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

gpt-image-2grok-4.5

Throughput (tok/s)

-

TTFT (s)

-

Uptime (%)

-

Cost calculator

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

Grok 4.5
$210 /mo
GPT Image 2
$750 /mo

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

FAQ

Which is cheaper: GPT Image 2, Grok 4.5?

Grok 4.5: $6.00/M output tokens; GPT Image 2: $30.00/M. Use the cost calculator above to estimate your own workload.

What inputs and capabilities does each model support?

GPT Image 2 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 GPT Image 2 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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