#17Z.ai· released 2026-04-07

Z.ai: GLM 5.1.

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...

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Context
203K
Input $/1M
$0.97
Output $/1M
$3.04
Modality
text

Benchmarks

How these are aggregated →
Arena Elo
1468
LMArena — human blind votes
AA Index
59.0
Artificial Analysis composite
LiveBench
74.5
Contamination-resistant
GPQA
82.1%
Grad-level science reasoning
MMLU-Pro
84.0%
Broad knowledge
SWE-bench
66.9%
Real GitHub bugs (Verified)
Terminal-Bench
45.9%
Agentic shell tasks
ARC-AGI
15.3%
Abstract reasoning
Aider Polyglot
77.1%
Multi-language code editing
Speed
78 tok/s
Median output speed

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