Runs longer without stalling
Officially framed as continuous work up to multi-hour single jobs—fit for repo-scale rewrites with fewer mid-run stops.
Zhipu · GLM 5.1 · Apr 2026
GLM 5.1 — coding model for multi-hour continuous jobs
- ~200K context
- Very long single outputs
- Built for long runs
- Open weights to compare
What is GLM 5.1?
GLM 5.1 is Zhipu’s model released in April 2026. Official materials stress multi-hour coding and terminal-tool jobs with fewer mid-run stalls. Versus GLM-5, SWE and terminal scores rise sharply. When you need million-token context, evaluate GLM 5.2 first. Pick GLM 5.1 in iMini Agent to use it.
- Vendor
- Zhipu
- Released
- Apr 2026
- Context
- ~200K tokens
- Max output
- 128K tokens
- Deep thinking
- Built for long runs
- Best for
- Proven long-running coding workflows
What’s new vs GLM-5
Sustainable run length and engineering benches—what to check before you keep using 5.1.
Stronger engineering benches
Official headline suites like SWE-Bench Pro and Terminal-Bench improve vs the prior gen.
Open weights and toolchain fit
Open weights plus common coding toolchains—easier migration evaluation.
Fine to keep using
No need to force a move when workflows are proven on 5.1; open million-token jobs on 5.2.
Official benchmarks
Zhipu’s GLM-5.1 coding board combining SWE-Bench Pro, Terminal-Bench 2.0, and NL2Repo.
Three common workflows
GLM 5.1 still fits proven long-running coding and terminal-tool workflows.
Long-running coding
Long refactors and fixes. For million-token context, compare 5.2.
Terminal tool jobs
Multi-step CLI work. Pin success checks.
Bilingual engineering collaboration
Mixed CN/EN specs and code review.
Vs GLM 5.2 and Qwen3.6 Plus
All three lean Chinese engineering. Gaps are context length and generation capacity.
| Dimension | GLM 5.1 | GLM 5.2 | Qwen3.6 Plus |
|---|---|---|---|
| Context | ~200K | 1M tokens | 1M tokens |
| Reasoning | Built for long runs | High / Max tunable | Coding & tools focus |
| Coding / tools | Long-running coding & terminal jobs | Million-context long-task coding | Multimodal repo-scale coding |
| Long tool runs | Hours of continuous work | Long-thread delivery | Built-in tools + video |
| Speed posture | Heavier long runs | Tunable thinking budget | Workflow focus |
| Prefer when | Workflows still on 5.1 | Need million-token context | Tied to Qwen multimodal |
Using GLM 5.1 on iMini
Free quota, model identity, key specs, and how it differs from 5.2.
Use GLM 5.1 free on iMini Agent
Coding and terminal-tool jobs that can run for hours.
Open GLM 5.1No Zhipu API key required.