GLM-5.2 vs GLM-5.3 Flash: Specs & Benchmark Comparison
| Characteristic | GLM-5.2 | GLM-5.3 Flash |
|---|---|---|
| Company | Zhipu AI | Zhipu AI |
| Release Date | June 16, 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 | 0.9 | 0.6 |
Verdict
GLM-5.3 Flash leads in 2 out of 4 comparison categories.
Overall Performance
Both models show comparable average scores: GLM-5.2 — 0.9, 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
GLM-5.3 Flash is newer: released 8/26/2026 vs 6/16/2026.
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Frequently Asked Questions
Which is better for coding — GLM-5.2 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-5.2 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-5.2 or GLM-5.3 Flash?
GLM-5.2 supports a larger context: 1,048,576 tokens vs 1,048,576.
The GLM-5.2 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-5.2 or GLM-5.3 Flash page. See also the complete list of AI model comparisons.