LongCat-2.5 vs SWE-2
LongCat-2.5 and SWE-2 are closely matched at 50.0 and 47.9 on the LLM Stats Score.
Meituan · Cognition · Updated for 2026
Which is better?
LongCat-2.5 and SWE-2 are closely matched on the overall LLM Stats Score at 50.0 and 47.9.
In the 3 individual benchmarks reported for both models, SWE-2 wins 2; this is a narrower head-to-head signal than the composite indexes.
Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.
Choose LongCat-2.5
- you want the most recent training data — it shipped Nov 2026
Choose SWE-2
- you value its reported benchmark strengths — it wins 2 of 3 exact shared results
At a glance
The differences that matter most.
Capability indexes
Additional strengths measured across groups of related public benchmarks
Individual benchmarks
23 reported for LongCat-2.5 · 4 for SWE-2
LongCat-2.5 outperforms in 1 benchmarks (Terminal-Bench 4.0), while SWE-2 is better at 2 benchmarks (DeepSWE 1.1, Terminal-Bench 2.1).
SWE-2 shows notably better performance in the majority of benchmarks.
Human preference
Blind head-to-head votes and playground preference scores
Context Window
Maximum input and output token capacity
Only LongCat-2.5 specifies input context (1,048,576 tokens). Only LongCat-2.5 specifies output context (131,072 tokens).
Input capabilities
Documented input modalities across available providers
LongCat-2.5 supports multimodal inputs, whereas SWE-2 does not.
LongCat-2.5 can handle both text and other forms of data like images, making it suitable for multimodal applications.
LongCat-2.5
SWE-2
Release Timeline
When each model was launched
LongCat-2.5 was released on 2026-11-01, while SWE-2 was released on 2026-09-10.
LongCat-2.5 is 2 months newer than SWE-2.
Nov 1, 2026
4 days ago
1mo newerSep 10, 2026
1 months ago
Knowledge Cutoff
When training data ends
Neither model specifies a knowledge cutoff date.
Unable to compare the recency of their training data.
Outputs Comparison
Judge for yourself.
Run your own prompts against LongCat-2.5 and SWE-2 side-by-side, then vote on the output you prefer.
FAQ
Common questions about LongCat-2.5 vs SWE-2.