Gemini 3.1 Pro Preview Search vs Grok 4.5

Output tokens cost $12.00 per million on Gemini 3.1 Pro Preview Search and $6.00 per million on Grok 4.5. Input tokens cost $2.00 per million on Gemini 3.1 Pro Preview Search and $2.00 per million on Grok 4.5. Cached input tokens are billed at $0.50 per million on Gemini 3.1 Pro Preview Search and $0.50 per million on Grok 4.5. Time to first token (TTFT) measured on AIHubMix is 4.7s on Gemini 3.1 Pro Preview Search and 2.2s on Grok 4.5. Measured output throughput is 93.4 tok/s on Gemini 3.1 Pro Preview Search and 27.1 tok/s on Grok 4.5. On the LMArena coding leaderboard Gemini 3.1 Pro Preview Search scores 1522 and Grok 4.5 scores 1523.

Gemini 3.1 Pro Preview Search Grok

Grok 4.5

+ Add model · 2/4

Gemini 3.1 Pro Preview Search

Google · text, image, audio, video → text

Gemini-3.1-pro-preview-search integrates Google's official search functionality; the search feature incurs an additional separate fee log directly incorporated into the scoring, but the log details are not displayed; this will be fixed in the future to show the details; it only supports OpenAI-compatible format calls and does not support the Gemini SDK; for the Gemini native SDK, please directly set the official search parameters.

Input$2.00 /M

Output$12.00 /M

Details

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 3.1 Pro Preview Search

Grok 4.5

Input /M

$2.00

Output /M

$12.00

$6.00

Cache read /M

$0.50

Context length

500,000

Max output

500,000

Time to First Token

4.7 s

2.2 s

Throughput

93.4 tok/s

27.1 tok/s

Modalities

textimageaudiovideo

textimage

Supported Parameters

thinkingwebdeepsearchtoolsfunction callingstructured outputslong context

thinkingtoolsfunction callingstructured outputslong context

API Formats

chat_completions

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-3.1-pro-preview-searchgrok-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-3.1-pro-preview-searchgrok-4.5

Throughput (tok/s)

TTFT (s)

Uptime (%)

LMArena Benchmarks

LMArena ratings by capability (Bradley-Terry, commonly called Elo). Higher is better.

Text

gemini-3.1-pro-preview-searchgrok-4.5

1420146015001540

Overall

14701486

Coding

15221523

Math

14781491

Hard prompts

14951507

Instruction following

14661481

Multi-turn

14771494

Creative writing

14491479

Longer query

14851498

Chinese

15111527

English

14751487

Vision

gemini-3.1-pro-preview-searchgrok-4.5

126013001340

Overall

12821282

OCR

12951298

Diagram

13111321

Homework

13131328

WebDev Arena

gemini-3.1-pro-preview-searchgrok-4.5

1400146015201580

Overall

14451556

React

14341559

HTML

14861577

Gaming

15861586

Simulations

15981598

Data analytics

15221522

Source: LMArena (arena.ai) leaderboard, imported by AIHubMix. Models without published ratings are omitted per chart.

Cost calculator

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

Requests / day

Avg input tokens / request

Avg output tokens / request

Grok 4.5

$210 /mo

Gemini 3.1 Pro Preview Search

$300 /mo

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

FAQ

Which is cheaper: Gemini 3.1 Pro Preview Search, Grok 4.5?

Grok 4.5: $6.00/M output tokens; Gemini 3.1 Pro Preview Search: $12.00/M. Use the cost calculator above to estimate your own workload.

How do their coding arena scores compare?

Grok 4.5: 1523; Gemini 3.1 Pro Preview Search: 1522 (LMArena coding leaderboard).

Which responds faster?

Grok 4.5: 2.2s 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 3.1 Pro Preview Search at 93.4 tok/s and Grok 4.5 at 27.1 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 3.1 Pro Preview Search accepts text, image, audio and video input and supports thinking, web search, deep search, 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 3.1 Pro Preview Search 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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Gemini 3.1 Pro Preview Search vs Grok 4.5

Pricing & Specifications

Activity Past 30 Days

Tokens / day

Requests / day

Performance Past 3 Days

Throughput (tok/s)

TTFT (s)

Uptime (%)

LMArena Benchmarks

Cost calculator

FAQ

Popular comparisons

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