Models

Gemini 2.5 Pro Preview 03-25 vs Grok 4.5

Output tokens cost $10.00 per million on Gemini 2.5 Pro Preview 03-25 and $6.00 per million on Grok 4.5. Input tokens cost $1.25 per million on Gemini 2.5 Pro Preview 03-25 and $2.00 per million on Grok 4.5. Cached input tokens are billed at $0.13 per million on Gemini 2.5 Pro Preview 03-25 and $0.50 per million on Grok 4.5. Time to first token (TTFT) measured on AIHubMix is 2.3s on Gemini 2.5 Pro Preview 03-25 and 1.6s on Grok 4.5. Measured output throughput is 97.7 tok/s on Gemini 2.5 Pro Preview 03-25 and 25.2 tok/s on Grok 4.5.

GoogleGemini 2.5 Pro Preview 03-25GrokGrok 4.5
Google logo
Gemini 2.5 Pro Preview 03-25
Google · text, image → text

Supports high concurrency. The Gemini 2.5 Pro preview version is here, with higher limits for production testing. Google's latest and most powerful model;

Input$1.25 /M
Output$10.00 /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.

Gemini 2.5 Pro Preview 03-25
Grok 4.5
Input /M
$1.25
$2.00
Output /M
$10.00
$6.00
Cache read /M
$0.13
$0.50
Context length
0
500,000
Max output
0
500,000
Time to First Token
2.3 s
1.6 s
Throughput
97.7 tok/s
25.2 tok/s
Modalities
textimage
textimage
Supported Parameters
thinkingtoolsfunction callingstructured outputslong context
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.

gemini-2.5-pro-preview-03-25grok-4.5

Tokens / day

-

Requests / day

-

Performance Past 3 Days

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

gemini-2.5-pro-preview-03-25grok-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
Gemini 2.5 Pro Preview 03-25
$225 /mo

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

FAQ

Which is cheaper: Gemini 2.5 Pro Preview 03-25, Grok 4.5?

Grok 4.5: $6.00/M output tokens; Gemini 2.5 Pro Preview 03-25: $10.00/M. Use the cost calculator above to estimate your own workload.

Which responds faster?

Grok 4.5: 1.6s time to first token measured on AIHubMix; see the live performance charts above for how each model behaves across the day.

Which one generates tokens faster?

Gemini 2.5 Pro Preview 03-25 at 97.7 tok/s and Grok 4.5 at 25.2 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 Pro Preview 03-25 accepts text and image input and supports thinking, tool calling, function calling, structured outputs and long context; 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 Pro Preview 03-25 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.

Popular comparisons

Related model match-ups readers also look at.