DeepSeek V4.1 Flash vs GLM-5.3-Flash
DeepSeek V4.1 Flash (DeepSeek) and GLM-5.3-Flash (Z.ai (Zhipu AI)) compared on benchmarks, pricing, context window, and use-case rankings.
- DeepSeek V4.1 Flash leads on overall intelligence (ECI 156 vs 153).
- GLM-5.3-Flash is cheaper on input tokens: $0.13 vs $0.14 per 1M.
| Attribute | DeepSeek V4.1 Flash | GLM-5.3-Flash |
|---|---|---|
| Scores | ||
| Intelligence (ECI) | 156 | 153 |
| Coding | 75 | 75 |
| Math | 74 | 52 |
| Reasoning & Knowledge | 61 | 52 |
| Agentic & Tools | 47 | 69 |
| Specifications | ||
| Developer | DeepSeek | Z.ai (Zhipu AI) |
| Family | DeepSeek | — |
| Released | Sep 9, 2026 | Aug 20, 2026 |
| Parameters | 748B | 320B |
| Availability | Open weights (unrestricted) | Open weights (unrestricted) |
| Context window | 1M | 1M |
| Price — $/M input | $0.14 | $0.13 |
| Price — $/M output | $0.54 | $0.44 |
| Inputs | text, image | text, image, video |
| Outputs | text | text |
| Benchmarks | ||
| AIME 2024/2025 | 98% | 94% |
| APEX | 40% | 53% |
| ARC-AGI | 95% | 91% |
| ARC-AGI-2 | 73% | 66% |
| GPQA Diamond | 90% | 90% |
| Humanity's Last Exam | 39% | 40% |
| SciCode | 52% | 52% |
| SimpleQA Verified | 43% | 32% |
| WebDev Arena | 1614 | 1607 |
Use-case scores are 0–100 percentile composites across each area’s benchmarks, ranked against every model from the past year. Highlighted cells lead each row. Open a model for the full picture.
Frequently asked questions
Is DeepSeek V4.1 Flash better than GLM-5.3-Flash?
On Epoch AI's Capabilities Index, DeepSeek V4.1 Flash scores higher (156) than GLM-5.3-Flash (153). The right pick depends on your task, so compare their coding, math, and reasoning scores in the table above.
Which is cheaper, DeepSeek V4.1 Flash or GLM-5.3-Flash?
GLM-5.3-Flash is cheaper on input tokens at $0.13 per million, versus $0.14 (representative OpenRouter pricing).
Which has a larger context window, DeepSeek V4.1 Flash or GLM-5.3-Flash?
Neither: both support up to 1M tokens.
Which is better for coding, DeepSeek V4.1 Flash or GLM-5.3-Flash?
They rank the same across coding benchmarks like WebDev Arena and SciCode: both sit in the 75th percentile among the models tracked on Model Beat.
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Benchmarks & model data from Epoch AI (CC BY); pricing & specs from OpenRouter. ECI = Epoch Capabilities Index.