Which is better for coding — GPT-5.4 or LongCat-Flash-Thinking?

Direct comparison on the SWE-Bench benchmark is not available. We recommend reviewing other metrics on the comparison page.

Which model is cheaper — GPT-5.4 or LongCat-Flash-Thinking?

API pricing data is available on the individual model pages.

Which has a larger context window — GPT-5.4 or LongCat-Flash-Thinking?

Context window data is available on the individual model pages.

GPT-5.4 vs LongCat-Flash-Thinking: Specs & Benchmark Comparison

GPT-5.4

OpenAI

LongCat-Flash-Thinking

Meituan

Characteristic	GPT-5.4	LongCat-Flash-Thinking
Company	OpenAI	Meituan
Release Date	March 5, 2026	September 21, 2025
Parameters	—	560B
Multimodal	Yes	No
Context (input)	1.0M	—
Context (output)	128K	—
Input Price / 1M	$2.50	—
Output Price / 1M	$15.00	—
Average Score	0.9	0.9
Benchmarks
Tau2 Telecom	1.0	0.8
GPQA	0.9	0.8

Visual Benchmark Comparison

GPT-5.4

LongCat-Flash-Thinking

Tau2 Telecom1.0 vs 0.8

1.0

0.8

GPQA0.9 vs 0.8

0.9

0.8

Verdict

GPT-5.4 leads in 1 out of 2 comparison categories.

Overall Performance

Both models show comparable average scores: GPT-5.4 — 0.9, LongCat-Flash-Thinking — 0.9.

Recency

GPT-5.4 is newer: released 3/5/2026 vs 9/21/2025.

More About These Models

GPT-5.4

OpenAI — specs, benchmarks, API

LongCat-Flash-Thinking

Meituan — specs, benchmarks, API

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GPT-5.1 High vs GPT-5.4 GPT-5 High vs GPT-5.4 GPT-5.1 Thinking vs GPT-5.4 GPT-5.1 Codex High vs GPT-5.4 GPT-5.2 vs GPT-5.4 GPT-5 Medium vs GPT-5.4

All model comparisons →

The GPT-5.4 and LongCat-Flash-Thinking comparison is updated for 2026. Data includes benchmark results, API pricing, context window size and other specifications. For more detailed information, visit the GPT-5.4 or LongCat-Flash-Thinking page. See also the complete list of AI model comparisons.