GLM-5.3 vs GLM-5.3 Flash: Specs & Benchmark Comparison
| Characteristic | GLM-5.3 | GLM-5.3 Flash |
|---|---|---|
| Company | Zhipu AI | Zhipu AI |
| Release Date | August 14, 2026 | August 26, 2026 |
| Parameters | 753B | 320B |
| Multimodal | No | Yes |
| Context (input) | 1.0M | 1.0M |
| Context (output) | 131K | 131K |
| Input Price / 1M | $1.40 | $0.15 |
| Output Price / 1M | $4.40 | $0.50 |
| Average Score | 0.8 | 0.6 |
| Benchmarks | ||
| Terminal-Bench 2.1 | 0.9 | 0.8 |
Visual Benchmark Comparison
GLM-5.3
GLM-5.3 Flash
Terminal-Bench 2.10.9 vs 0.8
0.9
0.8
Verdict
GLM-5.3 Flash leads in 1 out of 4 comparison categories.
Overall Performance
Both models show comparable average scores: GLM-5.3 — 0.8, GLM-5.3 Flash — 0.6.
API Cost
GLM-5.3 Flash is 8.9x cheaper: input $0.15/1M vs $1.40/1M tokens.
Context Window
Same context size: 1M tokens.
Recency
Both models were released around the same time: 8/14/2026 and 8/26/2026.
More About These Models
Related Comparisons
Frequently Asked Questions
Which is better for coding — GLM-5.3 or GLM-5.3 Flash?
Direct comparison on the SWE-Bench benchmark is not available. We recommend reviewing other metrics on the comparison page.
Which model is cheaper — GLM-5.3 or GLM-5.3 Flash?
GLM-5.3 Flash is cheaper for input: $0.15 per 1M tokens vs $1.40.
Which has a larger context window — GLM-5.3 or GLM-5.3 Flash?
GLM-5.3 supports a larger context: 1,048,576 tokens vs 1,048,576.
The GLM-5.3 and GLM-5.3 Flash comparison is updated for 2026. Data includes benchmark results, API pricing, context window size and other specifications. For more detailed information, visit the GLM-5.3 or GLM-5.3 Flash page. See also the complete list of AI model comparisons.