Compare/LongCat Flash Lite vs GPT-5.4 mini (Non-Reasoning)

LongCat Flash LitevsGPT-5.4 mini (Non-Reasoning)

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

LongCat

LongCat Flash Lite

Input
$0/M
Output
$0/M
Speed
126 tok/s
TTFT
3.24s
OpenAI

GPT-5.4 mini (Non-Reasoning)

Input
$0.75/M
Output
$4.5/M
Speed
202 tok/s
TTFT
0.45s

Winner by Category

Cheaper
LongCat Flash Lite
Faster (tok/s)
GPT-5.4 mini (Non-Reasoning)
Lower Latency
GPT-5.4 mini (Non-Reasoning)
Benchmarks (4-3)
LongCat Flash Lite

Pricing Comparison

MetricLongCat Flash LiteGPT-5.4 mini (Non-Reasoning)
Input ($/M tokens)$0$0.75
Output ($/M tokens)$0$4.5
Cost for 1M input + 100K output tokens:
LongCat Flash Lite$0.00
GPT-5.4 mini (Non-Reasoning)$1.20

Speed Comparison

Output Speed (tokens/s) — higher is better
LongCat Flash Lite
126 tok/s
GPT-5.4 mini (Non-Reasoning)
202 tok/s
Time to First Token (seconds) — lower is better
LongCat Flash Lite
3.24s
GPT-5.4 mini (Non-Reasoning)
0.45s

Benchmark Comparison

Data from Artificial Analysis API — 12 benchmarks

Intelligence Index
23.923.3
Coding Index
16.525.3
Math Index
GPQA Diamond
63.6%60.6%
MMLU-Pro
LiveCodeBench
AIME 2025
MATH-500
Humanity's Last Exam
6.0%5.7%
SciCode
28.4%39.6%
IFBench
43.1%38.8%
TerminalBench
10.6%18.2%
LongCat Flash Lite4 wins
3 winsGPT-5.4 mini (Non-Reasoning)

Frequently Asked Questions

Which is cheaper, LongCat Flash Lite or GPT-5.4 mini (Non-Reasoning)?

LongCat Flash Lite 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 (Non-Reasoning).

Which model performs better on benchmarks?

LongCat Flash Lite wins 4 out of 12 benchmarks compared to 3 for GPT-5.4 mini (Non-Reasoning). See the detailed benchmark chart above for per-category results.

Which is faster for real-time applications?

GPT-5.4 mini (Non-Reasoning) generates tokens faster at 202 tok/s vs 126 tok/s. However, GPT-5.4 mini (Non-Reasoning) has lower time-to-first-token (0.45s vs 3.24s).

When should I use LongCat Flash Lite vs GPT-5.4 mini (Non-Reasoning)?

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