$ diff glm-5-3-flash kimi-k3
GLM-5.3-Flash vs Kimi K3
Values come from GLM-5.3-Flash and Kimi K3, where each is cited to its source. This page states no benchmark result and ranks neither model — it puts two published specifications next to each other. Where a lab has not published a figure, the row says so rather than guessing.
Z.aiGLM-5.3-Flash
- context
- 1.0M
- weights
- open
- $/M in
- $0.15
- $/M out
- $0.5
- context
- 1M
- weights
- open
- $/M in
- $3
- $/M out
- $15
What actually differs
- Context window
- GLM-5.3-Flash takes 1.0M against 1M — modestly more room in a single request.
- Input price
- GLM-5.3-Flash at $0.15/M against $3/M — 20.0× cheaper to feed. Standard rates: one of these labs also quotes a lower cached-input tier, which applies only when a prefix is reused — see the full spec below.
- Output price
- GLM-5.3-Flash at $0.5/M against $15/M — 30.0× cheaper to generate. Output dominates the bill on most agentic workloads, where the model writes far more than it reads.
- Weights
- Both publish weights — GLM-5.3-Flash under MIT, Kimi K3 under Modified MIT (commercial use permitted; weights publicly downloadable). Check the licences rather than assuming they permit the same commercial use.
- Recency
- GLM-5.3-Flash shipped 41 days after Kimi K3 (2026-08-26 vs 2026-07-16).
Full spec
| Attribute | GLM-5.3-Flash | Kimi K3 |
|---|---|---|
| Developer | Z.ai | Moonshot AI |
| Released | 2026-08-26 | 2026-07-16 |
| Context window | 1,048,576 (1M) | 1M tokens |
| Pricing | $0.15/M input · $0.03/M cached input · $0.50/M output | $0.30/M cache-hit input · $3.00/M cache-miss input · $15.00/M output |
| License | MIT | Modified MIT (commercial use permitted; weights publicly downloadable) |
| Availability | Hugging Face (open weights), Z.ai API | Kimi Code, Kimi app, Kimi API; weights on Hugging Face (`moonshot-ai/kimi-k3`, released 2026-07-27) |