Compare/Mi:dm K 2.5 Pro Preview vs GPT-5.4 mini (xhigh)

Mi:dm K 2.5 Pro PreviewvsGPT-5.4 mini (xhigh)

Side-by-side comparison of pricing, 12 benchmarks, and generation speed.

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Mi:dm K 2.5 Pro Preview

Input
$0/M
Output
$0/M
Speed
TTFT
OpenAI

GPT-5.4 mini (xhigh)

Input
$0.75/M
Output
$4.5/M
Speed
219 tok/s
TTFT
3.82s

Winner by Category

Cheaper
Mi:dm K 2.5 Pro Preview
Faster (tok/s)
GPT-5.4 mini (xhigh)
Lower Latency
Mi:dm K 2.5 Pro Preview
Benchmarks (4-7)
GPT-5.4 mini (xhigh)

Pricing Comparison

MetricMi:dm K 2.5 Pro PreviewGPT-5.4 mini (xhigh)
Input ($/M tokens)$0$0.75
Output ($/M tokens)$0$4.5
Cost for 1M input + 100K output tokens:
Mi:dm K 2.5 Pro Preview$0.00
GPT-5.4 mini (xhigh)$1.20

Speed Comparison

Output Speed (tokens/s) — higher is better
Mi:dm K 2.5 Pro Preview
GPT-5.4 mini (xhigh)
219 tok/s
Time to First Token (seconds) — lower is better
Mi:dm K 2.5 Pro Preview
GPT-5.4 mini (xhigh)
3.82s

Benchmark Comparison

Data from Artificial Analysis API — 12 benchmarks

Intelligence Index
48.1
Coding Index
11.951.5
Math Index
78.7
GPQA Diamond
72.2%87.5%
MMLU-Pro
81.3%
LiveCodeBench
57.6%
AIME 2025
78.7%
MATH-500
Humanity's Last Exam
8.8%26.6%
SciCode
29.7%49.9%
IFBench
45.6%73.3%
TerminalBench
3.0%52.3%
Mi:dm K 2.5 Pro Preview4 wins
7 winsGPT-5.4 mini (xhigh)

Frequently Asked Questions

Which is cheaper, Mi:dm K 2.5 Pro Preview or GPT-5.4 mini (xhigh)?

Mi:dm K 2.5 Pro Preview is cheaper overall. Its blended price (3:1 input/output ratio) is $0.00/M tokens vs $1.69/M for GPT-5.4 mini (xhigh).

Which model performs better on benchmarks?

GPT-5.4 mini (xhigh) wins 7 out of 12 benchmarks compared to 4 for Mi:dm K 2.5 Pro Preview. See the detailed benchmark chart above for per-category results.

Which is faster for real-time applications?

GPT-5.4 mini (xhigh) generates tokens faster at 219 tok/s vs 0 tok/s. Mi:dm K 2.5 Pro Preview also has lower time-to-first-token (0.00s vs 3.82s).

When should I use Mi:dm K 2.5 Pro Preview vs GPT-5.4 mini (xhigh)?

Choose based on your priorities: Mi:dm K 2.5 Pro Preview for lower cost, GPT-5.4 mini (xhigh) for stronger benchmark performance, and GPT-5.4 mini (xhigh) for faster generation. For latency-sensitive apps, check the TTFT comparison above.