GLM-5 vs GLM-5.3
GLM-5 (Z.ai (Zhipu AI)) and GLM-5.3 (Z.ai (Zhipu AI)) compared on benchmarks, pricing, context window, and use-case rankings.
- GLM-5.3 leads on overall intelligence (ECI 157 vs 146).
- GLM-5.3 is cheaper on input tokens: $0.40 vs $0.70 per 1M.
- GLM-5.3 has a larger context window (1M vs 205K tokens).
- GLM-5.3 ranks higher for coding (89th vs 30th percentile).
| Attribute | GLM-5 | GLM-5.3 |
|---|---|---|
| Scores | ||
| Intelligence (ECI) | 146 | 157 |
| Coding | 30 | 89 |
| Math | 13 | 35 |
| Reasoning & Knowledge | 23 | 62 |
| Agentic & Tools | 48 | 73 |
| Specifications | ||
| Developer | Z.ai (Zhipu AI) | Z.ai (Zhipu AI) |
| Family | — | — |
| Released | Feb 12, 2026 | Aug 14, 2026 |
| Parameters | 744B | 744B |
| Availability | Open weights (unrestricted) | Open weights (restricted use) |
| Context window | 205K | 1M |
| Price — $/M input | $0.70 | $0.40 |
| Price — $/M output | $2.24 | $2.46 |
| Inputs | text | text |
| Outputs | text | text |
| Benchmarks | ||
| AIME 2024/2025 | 80% | 91% |
| APEX | 17% | 57% |
| ARC-AGI | 45% | — |
| ARC-AGI-2 | 5% | — |
| FrontierMath | 16% | — |
| FrontierMath Tier 4 | 2% | — |
| GPQA Diamond | 88% | 91% |
| Humanity's Last Exam | 29% | 42% |
| SciCode | 46% | 59% |
| SimpleBench | 53% | 66% |
| SWE-bench Verified | 72% | — |
| Terminal-Bench | 52% | — |
| WebDev Arena | 1436 | 1614 |
| WeirdML | 48% | 75% |
| τ²-bench | 98% | — |
| SimpleQA Verified | — | 41% |
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 better than GLM-5.3?
On Epoch AI's Capabilities Index, GLM-5.3 scores higher (157) than GLM-5 (146). The right pick depends on your task, so compare their coding, math, and reasoning scores in the table above.
Which is cheaper, GLM-5 or GLM-5.3?
GLM-5.3 is cheaper on input tokens at $0.40 per million, versus $0.70 (representative OpenRouter pricing).
Which has a larger context window, GLM-5 or GLM-5.3?
GLM-5.3 supports up to 1M tokens, compared with 205K for the other.
Which is better for coding, GLM-5 or GLM-5.3?
GLM-5.3 ranks higher across coding benchmarks like WebDev Arena and SciCode: 89th vs 30th 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.