DeepSeek-V4-Flash-0731 vs GLM-5.3: Specs & Benchmark Comparison
DeepSeek-V4-Flash-0731 is developed by DeepSeek, while GLM-5.3 comes from Zhipu AI. DeepSeek-V4-Flash-0731 was released in July 2026, and GLM-5.3 followed a month later in August 2026. GLM-5.3 is the larger model at roughly 753 billion parameters, against 304 billion for DeepSeek-V4-Flash-0731.
The two models share 6 published benchmarks. GLM-5.3 leads on 6 of them. The widest gaps are on AutomationBench, where GLM-5.3 scores 48.2% against 25.1%; CyberGym, where GLM-5.3 scores 84.5% against 77.0%. Averaged across everything we track, DeepSeek-V4-Flash-0731 sits at 57.5% and GLM-5.3 at 52.2%.
DeepSeek-V4-Flash-0731 is the cheaper API at $0.14 per million input tokens and $0.28 per million output tokens, roughly 10 times cheaper than GLM-5.3 at $1.40 and $4.40. Both accept a context window of about 1M tokens.
| Characteristic | DeepSeek-V4-Flash-0731 | GLM-5.3 |
|---|---|---|
| Company | DeepSeek | Zhipu AI |
| Release Date | July 31, 2026 | August 14, 2026 |
| Parameters | 304B | 753B |
| Multimodal | No | No |
| Context (input) | 1.0M | 1.0M |
| Context (output) | 393K | 131K |
| Input Price / 1M | $0.14 | $1.40 |
| Output Price / 1M | $0.28 | $4.40 |
| Average Score | 57.5% | 52.2% |
| Benchmarks | ||
| AutomationBench | 25.1% | 48.2% |
| CyberGym | 77.0% | 84.5% |
| Terminal-Bench 2.1 | 83.0% | 88.0% |
| NL2Repo | 54.2% | 58.0% |
| Agents' Last Exam | 25.2% | 28.5% |
| Toolathlon | 70.0% | 73.0% |
Visual Benchmark Comparison
Verdict
GLM-5.3 leads in 2 out of 4 comparison categories.
Both models show comparable average scores: DeepSeek-V4-Flash-0731 — 0.6, GLM-5.3 — 0.5.
DeepSeek-V4-Flash-0731 is 13.8x cheaper: input $0.14/1M vs $1.40/1M tokens.
GLM-5.3 supports a larger context: 1M vs 1M tokens.
GLM-5.3 is newer: released 8/14/2026 vs 7/31/2026.
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Frequently Asked Questions
Which is better for coding — DeepSeek-V4-Flash-0731 or GLM-5.3?
Which model is cheaper — DeepSeek-V4-Flash-0731 or GLM-5.3?
Which has a larger context window — DeepSeek-V4-Flash-0731 or GLM-5.3?
The DeepSeek-V4-Flash-0731 and GLM-5.3 comparison is updated for 2026. Data includes benchmark results, API pricing, context window size and other specifications. For more detailed information, visit the DeepSeek-V4-Flash-0731 or GLM-5.3 page. See also the complete list of AI model comparisons.