GLM 4.5V vs GLM 5.3

Wins 0 of 4 benchmarks
$0.85 / task
Wins 1 of 4 benchmarks
GLM 4.5V3.5
GLM 5.336.6
GLM 4.5V—
GLM 5.334.8
GLM 4.5V—
GLM 5.352
GLM 4.5V42.8
GLM 5.3—

Specs

SpecGLM 4.5VGLM 5.3
Input, per 1M!$0.60!$1.40
Output, per 1M!$1.80!$4.40
Cost per task?—$0.85
Speed, tok/s6992
Context66K1M
WeightsOpenOpen
ReleasedAug 2025Aug 2026
Memory (4-bit)65 GB452 GB
LicenceMITglm-5.3
Commercial useAllowedRestricted
See images✓—
Read PDFs——
Hear audio——
Watch video——
Call tools✓✓
Force a tool callPartial—
Return strict JSONPartial✓
Search the web??
Run code??
Use a computer??

What breaks when you switch

GLM 4.5V → GLM 5.3
Memory (4-bit): 65 GB → 452 GB
No image input
Reasoning cannot be disabled›

Disabling reasoning is unsupported; keep reasoning enabled.

tool_choice auto · Z.ai API›

The first-party chat reference exposes only auto for tool_choice.

Complete unmodified reasoning_content›

Preserved thinking defaults on for Coding Plan and off for the standard API; when enabled, return complete unmodified reasoning_content in its original order to protect quality and cache hits.

Only one stop word›

Only one stop word is supported, so do not rely on a list of alternative stop sequences.

GLM 5.3 → GLM 4.5V
Context: 1M → 66K