Compare/Inkling vs GPT-5.4 mini (medium)

InklingvsGPT-5.4 mini (medium)

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

Thinking Machines

Inkling

Input
$1.87/M
Output
$4.68/M
Speed
83 tok/s
TTFT
1.63s
OpenAI

GPT-5.4 mini (medium)

Input
$0.75/M
Output
$4.5/M
Speed
176 tok/s
TTFT
9.25s

Winner by Category

Cheaper
GPT-5.4 mini (medium)
Faster (tok/s)
GPT-5.4 mini (medium)
Lower Latency
Inkling
Benchmarks (5-2)
Inkling

Pricing Comparison

MetricInklingGPT-5.4 mini (medium)
Input ($/M tokens)$1.87$0.75
Output ($/M tokens)$4.68$4.5
Cost for 1M input + 100K output tokens:
Inkling$2.34
GPT-5.4 mini (medium)$1.20

Speed Comparison

Output Speed (tokens/s) — higher is better
Inkling
83 tok/s
GPT-5.4 mini (medium)
176 tok/s
Time to First Token (seconds) — lower is better
Inkling
1.63s
GPT-5.4 mini (medium)
9.25s

Benchmark Comparison

Data from Artificial Analysis API — 12 benchmarks

Intelligence Index
40.729.8
Coding Index
52.1
Math Index
GPQA Diamond
87.2%82.3%
MMLU-Pro
LiveCodeBench
AIME 2025
MATH-500
Humanity's Last Exam
29.7%17.1%
SciCode
46.1%44.2%
IFBench
64.8%
TerminalBench
34.1%
Inkling5 wins
2 winsGPT-5.4 mini (medium)

Frequently Asked Questions

Which is cheaper, Inkling or GPT-5.4 mini (medium)?

GPT-5.4 mini (medium) is cheaper overall. Its blended price (3:1 input/output ratio) is $1.69/M tokens vs $2.57/M for Inkling.

Which model performs better on benchmarks?

Inkling wins 5 out of 12 benchmarks compared to 2 for GPT-5.4 mini (medium). See the detailed benchmark chart above for per-category results.

Which is faster for real-time applications?

GPT-5.4 mini (medium) generates tokens faster at 176 tok/s vs 83 tok/s. Inkling also has lower time-to-first-token (1.63s vs 9.25s).

When should I use Inkling vs GPT-5.4 mini (medium)?

Choose based on your priorities: GPT-5.4 mini (medium) for lower cost, Inkling for stronger benchmark performance, and GPT-5.4 mini (medium) for faster generation. For latency-sensitive apps, check the TTFT comparison above.