$ diff kimi-k3-1-pro glm-5-3-flash
Kimi K3.1 Pro vs GLM-5.3-Flash
Values come from Kimi K3.1 Pro and GLM-5.3-Flash, 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.
Moonshot AIKimi K3.1 Pro
- context
- 1.0M
- weights
- —
- $/M in
- $2
- $/M out
- $10
- context
- 1.0M
- weights
- open
- $/M in
- $0.15
- $/M out
- $0.5
What actually differs
- Context window
- Identical — both accept 1.0M tokens, so context length is not a reason to pick either.
- Input price
- GLM-5.3-Flash at $0.15/M against $2/M — 13.3× 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 $10/M — 20.0× cheaper to generate. Output dominates the bill on most agentic workloads, where the model writes far more than it reads.
- Recency
- Kimi K3.1 Pro shipped 58 days after GLM-5.3-Flash (2026-10-23 vs 2026-08-26).
Full spec
| Attribute | Kimi K3.1 Pro | GLM-5.3-Flash |
|---|---|---|
| Developer | Moonshot AI | Z.ai |
| Released | 2026-10-23 | 2026-08-26 |
| Context window | 1,048,576 tokens ([source](../../sources/blogs/moonshot-2026-10-24-k3-pricing.md)) | 1,048,576 (1M) |
| Pricing | $2.00/MTok input · $10.00/MTok output · $0.20/MTok cached input; cache writes $2.00/MTok (5m), $4.00/MTok (1h); excludes taxes ([source](../../sources/blogs/moonshot-2026-10-24-k3-pricing.md)) | $0.15/M input · $0.03/M cached input · $0.50/M output |
| License | not recorded | MIT |
| Availability | Kimi.ai, mobile apps, Kimi Work, Kimi Code, Kimi API; enterprise access off by default at launch ([source](../../sources/blogs/moonshot-2026-10-23-kimi-k3-1-pro.md)) | Hugging Face (open weights), Z.ai API |