Directory · Model comparison
GLM-5.3 vs GPT-5.6 Luna
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 | GLM-5.3 | GPT-5.6 Luna |
|---|---|---|
| Input cost / 1M | $1.40 | $0.20 |
| Output cost / 1M | $4.40 | $1.20 |
| Context window | 1,048,576 tokens | 1,050,000 tokens |
| MMLU score | — | — |
Cost verdict
Enter monthly input and output volumes to see total cost savings.
GLM-5.3
- Input: 1M × $1.40 = $1.40
- Output: 1M × $4.40 = $4.40
- Total
- $5.80
GPT-5.6 Luna
- Input: 1M × $0.20 = $0.20
- Output: 1M × $1.20 = $1.20
- Total
- $1.40
Total cost savings
$4.40
GPT-5.6 Luna saves $4.40 per month vs the other model at this volume.
Model routing savings
Uses this page's verified rates. GLM-5.3 is the premium route (higher combined per-1M cost); GPT-5.6 Luna handles routine traffic.
All premium
GLM-5.3
$290.00
100% of input and output on the premium route
Routed stack
80% → GPT-5.6 Luna
20% → GLM-5.3
$114.00
- Routine slice
- $56.00
- Premium slice
- $58.00
Monthly savings
$176.00
60.7% lower
Rates pulled from this page's model database entries (glm-5-3, gpt-5-6-luna) — same per-1M input/output figures as Tale of the tape. Production routing needs quality gates and monitoring.
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