GLM-5.3 vs LongCat-2.0

Specs, VRAM requirements and download trends — updated 24 October 2026.

zai-org · A · Open weights
Params
753.3 B
Context
1,048,576
30d
1.9 M
meituan-longcat · B · Open weights
Params
1,775.6 B
Context
262,144
30d
3 K
mit · commercial OK

Specification comparison

Differences are highlighted; identical values are muted.

Specification GLM-5.3 LongCat-2.0
Deployment Open weights · also via API Open weights · also via API
Parameters 753.3 B 1,775.6 B
Architecture GlmMoeDsaForCausalLM LongcatCausalLM
Context length 1,048,576 262,144
Licence other mit
Commercial use Unknown Allowed
Languages 2 —
Downloads 30d 1,942,665 2,563
Downloads all time 3.1 M 9 K
Quantizations on the Hub SAFETENSORS SAFETENSORS
Gated No No
First seen on the Hub 2026-08-25 2026-07-05
API input price / 1M tokens $0.079 $0.30
API output price / 1M tokens $1.40 $1.20
Est. cost per 1M input + 1M output tokens $1.48 $1.50
Cached input / 1M tokens $0.078 $0.006
AA Intelligence Index 44.8 19.1
AA Coding Index 74.8 45.3
AA Agentic Index 53.1 14
Max output tokens 943,718 262,144
API providers 37 1
Tool calling Yes Yes
Reasoning mode Yes Yes

API cost

Estimated cost of 1M input + 1M output tokens via OpenRouter

GLM-5.3 $1.48
LongCat-2.0 $1.50

GLM-5.3 is 1.0× cheaper at list price.

Download trend

Daily snapshots, last 50 days (5 Sep – 24 Oct)

1.9 M2 K
GLM-5.3 LongCat-2.0

VRAM side by side

On RTX 4090 · 24 GB · 8K context unless noted

LongCat-2.0 · fp16 @ 256K ctx 12,430.1 GB / 24 GB
❌ Won’t fit
GLM-5.3 · fp16 @ 1024K ctx 15,295.6 GB / 24 GB
❌ Won’t fit

Adjacent comparisons