GLM-5.1
Pricing & Specs
Zhipu AI · $1.4 input / $4.4 output per 1M tokens · 202.8K context window
No longer offered on OpenMark
GLM-5.1 is no longer offered on OpenMark (deprecated or superseded upstream). Its specs are kept here for reference — if you're still running it in production, it's worth benchmarking current alternatives: newer models are often cheaper AND better on the same task.
GLM-5.1 API Pricing
| Tokens | Price |
|---|---|
| Input | $1.4 / 1M tokens |
| Output | $4.4 / 1M tokens |
50% discount available for batch API requests. Batch API pricing is available via Together at 50%; cache pricing is not published.
What that means in practice
GLM-5.1 Specs
| Spec | Value |
|---|---|
| Context window | 202.8K tokens |
| Input modalities | text |
| Output modalities | text |
| Latency (measured by OpenMark) | ~2.5s median response |
| Reasoning model | Yes |
| Tool / function calling | Yes |
| JSON mode | Yes |
| Streaming | Yes |
| Prompt caching | No |
| Batch API | Yes |
Notes
Deprecated/removed from Together AI. Migrated from GLM-5 (deprecated April 22, 2026) to GLM-5.1.
FAQ
How much does GLM-5.1 cost?
GLM-5.1 costs $1.4 per 1M input tokens and $4.4 per 1M output tokens.
What is GLM-5.1's context window?
GLM-5.1 has a 202.8K-token context window.
Can I test GLM-5.1 on my own task?
GLM-5.1 is no longer offered on OpenMark, but you can benchmark its current alternatives from Zhipu AI and other providers on your own task — free tier available.
Still using GLM-5.1?
It's been superseded. Benchmark its current alternatives on your actual
workload — you'll likely find something cheaper AND better. Free tier available.