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Grok 3 Mini vs Grok 4.5

Compare Grok 3 Mini from Grok 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.

GrokGrok 3 MiniGrokGrok 4.5
Grok logo
Grok 3 Mini
Grok · → text

Input$0.3 /M
Output$0.501 /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 /M
Output$6 /M
Cache read$0.5 /M

Pricing & Specifications

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

Grok 3 Mini
Grok 4.5
Input /M
$0.3
$2
Output /M
$0.501
$6
Cache read /M
-
$0.5
Context length
0
500,000
Max output
0
500,000
Time to First Token
-
1.6 s
Throughput
-
17.6 tok/s
Modalities
textimage
Supported Parameters
thinkingtoolsfunction callingstructured outputslong context
API Formats
Released
June 1, 2024
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.

grok-3-minigrok-4.5

Tokens / day

-

Requests / day

-

Performance Past 3 Days

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

grok-3-minigrok-4.5

Throughput (tok/s)

-

TTFT (s)

-

Uptime (%)

-

LMArena Benchmarks

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

Text
grok-3-minigrok-4.5
1300136014201480
Overall
13621466
Coding
13901390
Math
13881388
Hard prompts
13771377
Instruction following
13621362
Multi-turn
13481348
Creative writing
13291329
Longer query
13781378
Chinese
13841384
English
13741374

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.

Grok 3 Mini
$25.51 /mo
Grok 4.5
$210 /mo

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

FAQ

Which is cheaper: Grok 3 Mini, Grok 4.5?

Grok 3 Mini: $0.501/M output tokens; Grok 4.5: $6/M. Use the cost calculator above to estimate your own workload.

Can I call Grok 3 Mini 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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