GLM 5.2 vs GLM 5.3
Different efforts: non-thinking · low · Compare all at max
Humanity's Last Exam Humanity's Last Exam: Very hard expert questions across many fields, written to stump today’s models
GLM 5.29.8
GLM 5.336.6
Terminal-Bench 4.0 Terminal-Bench 4.0 · source setting 2: Agents use a terminal to complete executable coding, system administration and research tasks in the 4.0 suite
GLM 5.2 · max1
GLM 5.334.8
AutomationBench-AA AutomationBench-AA: Agents orchestrate SaaS workflows through APIs; objectives receive credit only when the task has no guardrail violation
GLM 5.2 · max28.4
GLM 5.352
Arena Text · creative writing Arena Text · creative writing: Human pairwise preferences in the stated text vote pool
GLM 5.2 · max1,454
GLM 5.3 · max1,453
| Benchmark | GLM 5.2 | GLM 5.3 |
|---|---|---|
| Humanity's Last Exam | 9.8 | 36.6 |
| Terminal-Bench 4.0 | 1 · max | 34.8 |
| AutomationBench-AA | 28.4 · max | 52 |
| Arena Text · creative writing | 1,454 · max | 1,453 · max |
Specs
| Spec | GLM 5.2 | GLM 5.3 |
|---|---|---|
| Input, per 1M | !$1.40 | !$1.40 |
| Output, per 1M | !$4.40 | !$4.40 |
| Cost per task? | — | $0.85 |
| Speed, tok/s | 171 | 126 |
| Context | 1M | 1M |
| Weights | Open | Open |
| Released | Jun 2026 | Aug 2026 |
| Memory (4-bit) | 452 GB | 452 GB |
| Licence | MIT | glm-5.3 |
| Commercial use | Allowed | Restricted |
| See images | — | — |
| Read PDFs | — | — |
| Hear audio | — | — |
| Watch video | — | — |
| Call tools | ✓ | ✓ |
| Force a tool call | Partial | — |
| Return strict JSON | ✓ | ✓ |
| Search the web | ? | ? |
| Run code | ? | ? |
| Use a computer | ? | ? |
What breaks when you switch
GLM 5.2 → GLM 5.3
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 5.2
Nothing known.