Z AI
GLM-5.1 (Reasoning)
GLM-5.1 delivers a major leap in coding capability, with particularly significant gains in handling long-horizon tasks. Unlike previous models built around minute-level interactions, GLM-5.1 can work independently and continuously on...
Z AI releasesModel Snapshot
ReleaseApr 7, 2026
Context200,000
Overall
Rank #54 across 566
40.2
Coding
Rank #70 across 222
55.8
Blended Price
Rank #241 across 371
$2.15/M
Strength Profile
Percentile score by analysis domain.
* Cost is inverted: lower input, output, and blended prices rank higher.
Benchmark Percentiles
Higher bars mean stronger relative placement.
Model Details
Runtime
Output Speed67.9 tok/s
First Token0.93s
Max Output128,000
Pricing
Blended$2.15/M
Input$1.40/M
All Benchmarks
| Metric | Domain | Value | Rank |
|---|---|---|---|
| Artificial Analysis Intelligence Index | overall | 40.2 | #54 |
| Artificial Analysis Coding Index | coding | 55.8 | #70 |
| GPQA | reasoning | 86.8% | #65 |
| Humanity's Last Exam | reasoning | 28.0% | #62 |
| SciCode |