UltraGPT
Z.ai: GLM 5.2 (free)
GLM 5.2 is a large-scale reasoning model from Z.ai. It supports text input and output with a 1M-token context window, and is suited for long-horizon agent workflows, project-level software engineering,...
Intelligence overview
32.8K tok
Context window
29.5K tok
Max output
What Z.ai: GLM 5.2 (free) can do.
Reasoning
Extended reasoning
Works through problems step by step before answering, trading latency for accuracy on harder tasks.
Adjustable effort
Choose how much the model deliberates per request — trade speed for depth as the task demands.
Development
Streaming
Streams tokens as they're generated instead of waiting on the full response.
Performance
Design Arena — ranked #10 across 16 categories
Pay for what you use.
Every model in UltraGPT runs behind one flat subscription — this is the underlying per-token cost the catalog tracks.
Free
Free
Built for serious work.
Build
Generate and refactor code, with the ability to draft and refactor production code.
Think
Works through hard problems with adjustable reasoning effort — xhigh, high.
Ask Z.ai: GLM 5.2 (free) anything.
A preview of the real UltraGPT composer — the model you see here is the model you get.
Continues in the UltraGPT app — one login, every model.
How Z.ai: GLM 5.2 (free) stacks up.
The closest models in the catalog by provider, capability and score — real entries, pulled from the same directory.
Technical details.
Specification
- Context window
- 32.8K tokens
- Max output
- 29.5K tokens
- Input modalities
- Text
- Output modalities
- Text
- Release date
- Jun 16, 2026
- Reasoning effort
- xhigh, high
- Streaming
- Supported
- Tool calling
- Not supported
- JSON mode
- Not supported
Reasoning
More from Z.AI, and everything else.
This model is one entry in the full UltraGPT catalog — browse the rest, compare pricing and context windows, or filter by capability.