GLM-4.5 vs Grok 4.3
Both are Mid-tier models, from Z.ai and xAI respectively. GLM-4.5 is the cheaper choice overall at a 4:1 input:output ratio.
Which is cheaper
Side by side
| Spec | GLM-4.5 | Grok 4.3 |
|---|---|---|
| Provider | Z.ai | xAI |
| Tier | Mid | Mid |
| Context window | 128K | 1M |
| Max output | 96K | — |
| Input $/1M | $0.60 | $1.25 |
| Output $/1M | $2.20 | $2.50 |
| Cache read $/1M | $0.11 | $0.20 |
| Modalities | text | text, image |
GLM-4.5. Popular open-weight GLM generation, per 1M tokens.
Grok 4.3. Short-context rate, for prompts under 200K tokens. At 200K and above: $2.50 input / $5 output, cache read $0.40 per 1M. Eligible for a 20% Batch API discount.
Sources
GLM-4.5 — verified August 29, 2026