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smart-model-routing-for-zai: Z.ai Model Routing That Actually Works
Auto-route tasks to the cheapest z.ai (GLM) model that handles the job correctly. Flash for lookups, Standard for reasoning, Plus/32B for the hard stuff.
Quick Access
Install command
$ mrt install ai

TL;DR
Auto-route tasks to the cheapest z.ai (GLM) model that works correctly. Three-tier progression: Flash → Standard → Plus/32B. Classify before responding.
10-Second Pitch
- **What it does:** Inspects each task, classifies complexity, routes to the right GLM tier
- **Key win:** GLM Flash is 100x cheaper than Plus/32B for simple tasks
- **Best for:** z.ai integrators who want the cost/performance sweet spot
Setup
pip install zai-router
zai-router configure --provider zai
Simple query → Flash
zai-router route "What's the weather in Berlin?"
Analytical task → Plus/32B
zai-router route "Analyze the tokenomics trends for the last 30 DeFi protocols by TVL"
Tier Breakdown
| Model | Use When | Cost |
|---|
| Flash | Q&A, greetings, reminders, lookups | ~$0.001/1K tokens |
| Standard | Code generation, summaries, reasoning | ~$0.01/1K tokens |
|---|
| Plus/32B | Complex analysis, multi-step agents | ~$0.10/1K tokens |
|---|
Pros / Cons
| Pros | Cons |
|---|
| Significant cost savings at scale | Requires careful prompt classification |
| Preserves output quality for complex tasks | Flash may miss nuance in edge cases |
|---|
| Automatic tier escalation when needed | Some latency overhead from classification |
|---|
Verdict
If you're building on z.ai, `smart-model-routing-for-zai` is mandatory. The cost difference between Flash and Plus/32B is 100x — and most user queries don't need the big model. Smart routing is the first thing you should ship.