GLM-5.3 vs Kimi K3
GLM-5.3 (Z.ai (Zhipu AI)) and Kimi K3 (Moonshot) compared on benchmarks, pricing, context window, and use-case rankings.
- GLM-5.3 is cheaper on input tokens — $1.40 vs $2.80 per 1M.
- Kimi K3 ranks higher for coding (99th vs 96th percentile).
| Attribute | GLM-5.3 | Kimi K3 |
|---|---|---|
| Scores | ||
| Intelligence (ECI) | — | 157 |
| Coding | 96 | 99 |
| Math | — | 82 |
| Reasoning & Knowledge | 85 | 78 |
| Agentic & Tools | — | 84 |
| Specifications | ||
| Developer | Z.ai (Zhipu AI) | Moonshot |
| Family | — | Kimi |
| Released | Aug 14, 2026 | Jul 16, 2026 |
| Parameters | 744B | 2.8T |
| Availability | API access | Open weights (non-commercial) |
| Context window | 1M | 1M |
| Price — $/M input | $1.40 | $2.80 |
| Price — $/M output | $4.40 | $14.00 |
| Inputs | text | text, image, video |
| Outputs | text | text |
| Benchmarks | ||
| GPQA Diamond | 92% | 93% |
| Humanity's Last Exam | 42% | 47% |
| SciCode | 56% | 59% |
| AIME 2024/2025 | — | 97% |
| APEX | — | 39% |
| ARC-AGI | — | 95% |
| ARC-AGI-2 | — | 60% |
| SimpleQA Verified | — | 43% |
| WebDev Arena | — | 1682 |
| WeirdML | — | 83% |
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
Which is cheaper, GLM-5.3 or Kimi K3?
GLM-5.3 is cheaper on input tokens at $1.40 per million, versus $2.80 (representative OpenRouter pricing).
Which has a larger context window, GLM-5.3 or Kimi K3?
GLM-5.3 supports up to 1M tokens, compared with 1M for the other.
Which is better for coding, GLM-5.3 or Kimi K3?
Across coding benchmarks like SWE-bench Verified and Terminal-Bench, Kimi K3 ranks higher — 99th vs 96th 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.