GLM-5.2 vs GLM-5.3-Flash
GLM-5.2 (Z.ai (Zhipu AI)) and GLM-5.3-Flash (Z.ai (Zhipu AI)) compared on benchmarks, pricing, context window, and use-case rankings.
- GLM-5.3-Flash leads on overall intelligence (ECI 153 vs 152).
- GLM-5.3-Flash is cheaper on input tokens: $0.13 vs $0.70 per 1M.
| Attribute | GLM-5.2 | GLM-5.3-Flash |
|---|---|---|
| Scores | ||
| Intelligence (ECI) | 152 | 153 |
| Coding | 75 | 75 |
| Math | 23 | 52 |
| Reasoning & Knowledge | 47 | 52 |
| Agentic & Tools | 77 | 69 |
| Specifications | ||
| Developer | Z.ai (Zhipu AI) | Z.ai (Zhipu AI) |
| Family | — | — |
| Released | Jun 16, 2026 | Aug 20, 2026 |
| Parameters | — | 320B |
| Availability | Open weights (unrestricted) | Open weights (unrestricted) |
| Context window | 1M | 1M |
| Price — $/M input | $0.70 | $0.13 |
| Price — $/M output | $2.20 | $0.44 |
| Inputs | text | text, image, video |
| Outputs | text | text |
| Benchmarks | ||
| AIME 2024/2025 | 86% | 94% |
| APEX | 45% | 53% |
| ARC-AGI | 77% | 91% |
| ARC-AGI-2 | 23% | 66% |
| GPQA Diamond | 92% | 90% |
| Humanity's Last Exam | 41% | 40% |
| SciCode | 51% | 52% |
| SimpleBench | 59% | — |
| SimpleQA Verified | 34% | 32% |
| SWE-bench Verified | 79% | — |
| WebDev Arena | 1593 | 1607 |
| WeirdML | 70% | — |
| τ²-bench | 99% | — |
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 GLM-5.2 better than GLM-5.3-Flash?
On Epoch AI's Capabilities Index, GLM-5.3-Flash scores higher (153) than GLM-5.2 (152). The right pick depends on your task, so compare their coding, math, and reasoning scores in the table above.
Which is cheaper, GLM-5.2 or GLM-5.3-Flash?
GLM-5.3-Flash is cheaper on input tokens at $0.13 per million, versus $0.70 (representative OpenRouter pricing).
Which has a larger context window, GLM-5.2 or GLM-5.3-Flash?
Neither: both support up to 1M tokens.
Which is better for coding, GLM-5.2 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.