Z.ai: GLM 5.1z-ai
Bottom Line
Z.ai: GLM 5.1: $1.40/1M input, $4.40/1M output, 205K context, CPS grade B. 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...
API Pricing (per 1M tokens)
| Input | $1.40 |
| Output | $4.40 |
| Cache Read | — |
| Cache Write | — |
| Blended (3:1) | $2.15 |
Specs & Performance
| Context Length | 205K |
| Max Output | 131K |
| Intelligence | 26 |
| Coding | 56 |
| Math | — |
| Speed | — |
| TTFT | — |
| CPS Grade | B |
| Input / Output Modalities | text → text |
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FAQ
How much does the Z.ai: GLM 5.1 API cost?
Z.ai: GLM 5.1 costs $1.40/1M input tokens and $4.40/1M output tokens. Blended cost at a 3:1 ratio is about $2.15/1M tokens.
What is the context window of Z.ai: GLM 5.1?
Z.ai: GLM 5.1 supports a 205K token context window with up to 131K output tokens.
Is Z.ai: GLM 5.1 worth it?
Z.ai: GLM 5.1 has a CPS grade of B (score 60), intelligence index 26, coding index 56. Use the compare page to benchmark against rivals.