GLM-5.1 vs Grok 4.6
GLM-5.1 (Z.ai (Zhipu AI)) and Grok 4.6 (xAI) compared on benchmarks, pricing, context window, and use-case rankings.
- Grok 4.6 leads on overall intelligence (ECI 156 vs 150).
- GLM-5.1 is cheaper on input tokens — $1.19 vs $2.00 per 1M.
- Grok 4.6 has a larger context window (500K vs 205K tokens).
- Grok 4.6 ranks higher for coding (92th vs 49th percentile).
| Attribute | GLM-5.1 | Grok 4.6 |
|---|---|---|
| Scores | ||
| Intelligence (ECI) | 150 | 156 |
| Coding | 49 | 92 |
| Math | 57 | 91 |
| Reasoning & Knowledge | 46 | 73 |
| Agentic & Tools | 94 | 84 |
| Specifications | ||
| Developer | Z.ai (Zhipu AI) | xAI |
| Family | — | Grok |
| Released | Apr 7, 2026 | Aug 12, 2026 |
| Parameters | 754B | — |
| Availability | Open weights (unrestricted) | API access |
| Context window | 205K | 500K |
| Price — $/M input | $1.19 | $2.00 |
| Price — $/M output | $3.74 | $6.00 |
| Inputs | text | text, image, file |
| Outputs | text | text |
| Benchmarks | ||
| AIME 2024/2025 | 93% | 99% |
| FrontierMath | 33% | — |
| FrontierMath Tier 4 | 13% | — |
| GPQA Diamond | 90% | 94% |
| Humanity's Last Exam | 30% | 43% |
| SciCode | 45% | 56% |
| SimpleBench | 55% | 76% |
| SimpleQA Verified | 34% | 49% |
| SWE-bench Verified | 74% | — |
| WebDev Arena | 1509 | 1629 |
| WeirdML | 57% | 67% |
| τ²-bench | 98% | — |
| APEX | — | 41% |
| ARC-AGI | — | 88% |
| ARC-AGI-2 | — | 67% |
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-5.1 better than Grok 4.6?
On Epoch AI's Capabilities Index, Grok 4.6 scores higher (156) than GLM-5.1 (150). The right pick depends on your task — compare their coding, math, and reasoning scores in the table above.
Which is cheaper, GLM-5.1 or Grok 4.6?
GLM-5.1 is cheaper on input tokens at $1.19 per million, versus $2.00 (representative OpenRouter pricing).
Which has a larger context window, GLM-5.1 or Grok 4.6?
Grok 4.6 supports up to 500K tokens, compared with 205K for the other.
Which is better for coding, GLM-5.1 or Grok 4.6?
Across coding benchmarks like SWE-bench Verified and Terminal-Bench, Grok 4.6 ranks higher — 92th vs 49th 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.