Models

Aihubmix Phi 4 Mini (reasoning) vs Grok 4.5

Output tokens cost $0.12 per million on Aihubmix Phi 4 Mini (reasoning) and $6.00 per million on Grok 4.5. Input tokens cost $0.12 per million on Aihubmix Phi 4 Mini (reasoning) and $2.00 per million on Grok 4.5. Cached input tokens are billed at $0.12 per million on Aihubmix Phi 4 Mini (reasoning) and $0.50 per million on Grok 4.5. Context lengths are 128,000 tokens on Aihubmix Phi 4 Mini (reasoning) and 500,000 tokens on Grok 4.5. On the LMArena coding leaderboard Aihubmix Phi 4 Mini (reasoning) scores 1306 and Grok 4.5 scores 1523.

MicrosoftAihubmix Phi 4 Mini (reasoning)GrokGrok 4.5
Microsoft logo
Aihubmix Phi 4 Mini (reasoning)
Microsoft · text → text

Phi-4-mini-reasoning is a lightweight open model designed for advanced mathematical reasoning and logic-intensive problem-solving. It is particularly well-suited for tasks such as formal proofs, symbolic computation, and solving multi-step word problems. With its efficient architecture, the model balances high-quality reasoning performance with cost-effective deployment, making it ideal for educational applications, embedded tutoring, and lightweight edge or mobile systems. Phi-4-mini-reasoning supports a 128K token context length, enabling it to process and reason over long mathematical problems and proofs. Built on synthetic and high-quality math datasets, the model leverages advanced fine-tuning techniques such as supervised fine-tuning and preference modeling to enhance reasoning capabilities. Its training incorporates safety and alignment protocols, ensuring robust and reliable performance across supported use cases.

Input$0.12 /M
Output$0.12 /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.

Aihubmix Phi 4 Mini (reasoning)
Grok 4.5
Input /M
$0.12
$2.00
Output /M
$0.12
$6.00
Cache read /M
$0.12
$0.50
Context length
128,000
500,000
Max output
4,000
500,000
Time to First Token
-
2.0 s
Throughput
-
26.5 tok/s
Modalities
text
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.

AiHubmix-Phi-4-mini-reasoninggrok-4.5

Tokens / day

-

Requests / day

-

Performance Past 3 Days

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

AiHubmix-Phi-4-mini-reasoninggrok-4.5

Throughput (tok/s)

-

TTFT (s)

-

Uptime (%)

-

LMArena Benchmarks

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

Text
AiHubmix-Phi-4-mini-reasoninggrok-4.5
1180128013801480
Overall
12561470
Coding
13061523
Math
12651478
Hard prompts
12781495
Instruction following
12451466
Multi-turn
12411477
Creative writing
12101449
Longer query
12661485
Chinese
12671511
English
12721475

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 4 Mini (reasoning)
$9.00 /mo
Grok 4.5
$210 /mo

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

FAQ

Which is cheaper: Aihubmix Phi 4 Mini (reasoning), Grok 4.5?

Aihubmix Phi 4 Mini (reasoning): $0.12/M output tokens; Grok 4.5: $6.00/M. Use the cost calculator above to estimate your own workload.

How do their coding arena scores compare?

Grok 4.5: 1523; Aihubmix Phi 4 Mini (reasoning): 1306 (LMArena coding leaderboard).

How large is each context window?

Aihubmix Phi 4 Mini (reasoning) accepts 128,000 and Grok 4.5 accepts 500,000 input tokens. Maximum output per request is 4,000 tokens on Aihubmix Phi 4 Mini (reasoning) and 500,000 tokens on Grok 4.5.

What inputs and capabilities does each model support?

Aihubmix Phi 4 Mini (reasoning) accepts text input; Grok 4.5 accepts text and image input and supports thinking, tool calling, function calling, structured outputs and long context.

Can I call Aihubmix Phi 4 Mini (reasoning) 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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