DeepSeek-V4-Flash-0731 vs GLM-5.3 Flash: Specs & Benchmark Comparison
DeepSeek-V4-Flash-0731 is developed by DeepSeek, while GLM-5.3 Flash comes from Zhipu AI. DeepSeek-V4-Flash-0731 was released in July 2026, and GLM-5.3 Flash followed a month later in August 2026. The two are similar in size, at about 304 billion and 320 billion parameters respectively.
The two models share 5 published benchmarks. GLM-5.3 Flash leads on 5 of them. The widest gaps are on AutomationBench, where GLM-5.3 Flash scores 48.8% against 25.1%; Toolathlon, where GLM-5.3 Flash scores 78.4% against 70.0%. Averaged across everything we track, DeepSeek-V4-Flash-0731 sits at 57.5% and GLM-5.3 Flash at 64.1%.
On price the two are close: DeepSeek-V4-Flash-0731 costs $0.14 per million input tokens and $0.28 per million output tokens, GLM-5.3 Flash $0.15 and $0.50. Both accept a context window of about 1M tokens. DeepSeek-V4-Flash-0731 accepts text as input, while GLM-5.3 Flash accepts text, images, and video.
| Characteristic | DeepSeek-V4-Flash-0731 | GLM-5.3 Flash |
|---|---|---|
| Company | DeepSeek | Zhipu AI |
| Release Date | July 31, 2026 | August 26, 2026 |
| Parameters | 304B | 320B |
| Multimodal | No | Yes |
| Context (input) | 1.0M | 1.0M |
| Context (output) | 393K | 131K |
| Input Price / 1M | $0.14 | $0.15 |
| Output Price / 1M | $0.28 | $0.50 |
| Average Score | 57.5% | 64.1% |
| Benchmarks | ||
| AutomationBench | 25.1% | 48.8% |
| Toolathlon | 70.0% | 78.4% |
| NL2Repo | 54.2% | 56.3% |
| Terminal-Bench 2.1 | 83.0% | 84.3% |
| Agents' Last Exam | 25.2% | 26.3% |
Visual Benchmark Comparison
Verdict
GLM-5.3 Flash leads in 2 out of 4 comparison categories.
Both models show comparable average scores: DeepSeek-V4-Flash-0731 — 0.6, GLM-5.3 Flash — 0.6.
DeepSeek-V4-Flash-0731 is 1.5x cheaper: input $0.14/1M vs $0.15/1M tokens.
GLM-5.3 Flash supports a larger context: 1M vs 1M tokens.
GLM-5.3 Flash is newer: released 8/26/2026 vs 7/31/2026.
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Frequently Asked Questions
Which is better for coding — DeepSeek-V4-Flash-0731 or GLM-5.3 Flash?
Which model is cheaper — DeepSeek-V4-Flash-0731 or GLM-5.3 Flash?
Which has a larger context window — DeepSeek-V4-Flash-0731 or GLM-5.3 Flash?
The DeepSeek-V4-Flash-0731 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 DeepSeek-V4-Flash-0731 or GLM-5.3 Flash page. See also the complete list of AI model comparisons.