Directory · Model comparison
Claude Opus 4.8 vs GLM-5.2
Side-by-side API economics and benchmarks. Per-1M input and output rates, context window, and verified metrics.
Tale of the tape
Head-to-head specs pulled from each model profile.
| Metric | Claude Opus 4.8 | GLM-5.2 |
|---|---|---|
| Input cost / 1M | $5.00 | $1.40 |
| Output cost / 1M | $25.00 | $4.40 |
| Context window | 1,000,000 tokens | 1,048,576 tokens |
| MMLU score | — | — |
Cost verdict
Enter monthly input and output volumes to see total cost savings.
Claude Opus 4.8
- Input: 1M × $5.00 = $5.00
- Output: 1M × $25.00 = $25.00
- Total
- $30.00
GLM-5.2
- Input: 1M × $1.40 = $1.40
- Output: 1M × $4.40 = $4.40
- Total
- $5.80
Total cost savings
$24.20
GLM-5.2 saves $24.20 per month vs the other model at this volume.
Model routing savings
Uses this page's verified rates. Claude Opus 4.8 is the premium route (higher combined per-1M cost); GLM-5.2 handles routine traffic.
All premium
Claude Opus 4.8
$1,500.00
100% of input and output on the premium route
Routed stack
80% → GLM-5.2
20% → Claude Opus 4.8
$532.00
- Routine slice
- $232.00
- Premium slice
- $300.00
Monthly savings
$968.00
64.5% lower
Rates pulled from this page's model database entries (claude-opus-4-8, glm-5-2) — same per-1M input/output figures as Tale of the tape. Production routing needs quality gates and monitoring.
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