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AIHubMix Phi 3 Small 128K vs Grok 4.5

Compare AIHubMix Phi 3 Small 128K from Microsoft 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.

MicrosoftAIHubMix Phi 3 Small 128KGrokGrok 4.5
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.

AIHubMix Phi 3 Small 128K
Grok 4.5
Input /M
$1
$2
Output /M
$3
$6
Cache read /M
-
$0.5
Context length
0
500,000
Max output
0
500,000
Time to First Token
-
4.4 s
Throughput
-
34.2 tok/s
Modalities
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.

ahm-Phi-3-small-128kgrok-4.5

Tokens / day

-

Requests / day

-

Performance Past 3 Days

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

ahm-Phi-3-small-128kgrok-4.5

Throughput (tok/s)

-

TTFT (s)

-

Uptime (%)

-

LMArena Benchmarks

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

Text
ahm-Phi-3-small-128kgrok-4.5
1100122013401460
Overall
11701471
Coding
12031523
Math
11931479
Hard prompts
11881495
Instruction following
11521466
Multi-turn
11181476
Creative writing
11331451
Longer query
11601487
Chinese
11491512
English
12101476

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.

AIHubMix Phi 3 Small 128K
$105 /mo
Grok 4.5
$210 /mo

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

FAQ

Which is cheaper: AIHubMix Phi 3 Small 128K, Grok 4.5?

AIHubMix Phi 3 Small 128K: $3/M output tokens; Grok 4.5: $6/M. Use the cost calculator above to estimate your own workload.

How do their coding arena scores compare?

Grok 4.5: 1523; AIHubMix Phi 3 Small 128K: 1203 (LMArena coding leaderboard).

Can I call AIHubMix Phi 3 Small 128K 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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