DeepSeek-V4.1-Flash vs GLM-5.2: Specs & Benchmark Comparison
DeepSeek-V4.1-Flash is developed by DeepSeek, while GLM-5.2 comes from Zhipu AI. GLM-5.2 was released in June 2026, and DeepSeek-V4.1-Flash followed 3 months later in September 2026. The two are similar in size, at about 552 billion and 753 billion parameters respectively.
The two models share 5 published benchmarks. DeepSeek-V4.1-Flash leads on 3 of them, GLM-5.2 on 2. The widest gaps are on Program Bench, where GLM-5.2 scores 63.7% against 20.3%; DeepSWE 1.1, where DeepSeek-V4.1-Flash scores 74.2% against 44.0%. Averaged across everything we track, DeepSeek-V4.1-Flash sits at 60.9% and GLM-5.2 at 60.9%.
DeepSeek-V4.1-Flash is the cheaper API at $0.30 per million input tokens and $1.20 per million output tokens, roughly 5 times cheaper than GLM-5.2 at $1.40 and $4.40. Both accept a context window of about 1M tokens. DeepSeek-V4.1-Flash accepts text and images as input, while GLM-5.2 accepts text.
| Characteristic | DeepSeek-V4.1-Flash | GLM-5.2 |
|---|---|---|
| Company | DeepSeek | Zhipu AI |
| Release Date | September 10, 2026 | June 16, 2026 |
| Parameters | 552B | 753B |
| Multimodal | Yes | No |
| Context (input) | 1.0M | 1.0M |
| Context (output) | 393K | 131K |
| Input Price / 1M | $0.30 | $1.40 |
| Output Price / 1M | $1.20 | $4.40 |
| Average Score | 60.9% | 60.9% |
| Benchmarks | ||
| Program Bench | 20.3% | 63.7% |
| DeepSWE 1.1 | 74.2% | 44.0% |
| NL2Repo | 64.0% | 48.9% |
| Terminal-Bench 2.1 | 90.6% | 82.7% |
| GPQA Diamond | 90.9% | 91.0% |
Visual Benchmark Comparison
Verdict
DeepSeek-V4.1-Flash leads in 2 out of 4 comparison categories.
Both models show comparable average scores: DeepSeek-V4.1-Flash — 0.6, GLM-5.2 — 0.6.
DeepSeek-V4.1-Flash is 3.9x cheaper: input $0.30/1M vs $1.40/1M tokens.
Same context size: 1M tokens.
DeepSeek-V4.1-Flash is newer: released 9/10/2026 vs 6/16/2026.
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Frequently Asked Questions
Which is better for coding — DeepSeek-V4.1-Flash or GLM-5.2?
Which model is cheaper — DeepSeek-V4.1-Flash or GLM-5.2?
Which has a larger context window — DeepSeek-V4.1-Flash or GLM-5.2?
The DeepSeek-V4.1-Flash and GLM-5.2 comparison is updated for 2026. Data includes benchmark results, API pricing, context window size and other specifications. For more detailed information, visit the DeepSeek-V4.1-Flash or GLM-5.2 page. See also the complete list of AI model comparisons.