AI Model Comparison
Side-by-side comparison of pricing, context window, benchmarks, capabilities, and license. Every figure comes from the developer's own pages, last checked on ; each model's page lists its sources. A figure we could not source shows as a dash.
Model A — Z.ai (Zhipu AI)
GLM-5.3 is Z.ai's flagship model for coding and agent work, built on the same base model as GLM-5.2 with all gains from post-training. It accepts text only, with a 1M-token context window and up to 128K output tokens, and always reasons.
Model B — Moonshot AI
Kimi K3.1 Pro is the first model of Moonshot AI's K3.1 series, launched on October 23, 2026 with a 1M-token context window and a faster Highspeed variant. Moonshot says its full weights will be released by November 4, 2026; until then it is offered only through Kimi's apps and API.
| Property | GLM-5.3 | Kimi K3.1 Pro |
|---|---|---|
| Released | Aug 18, 2026 | Oct 23, 2026 |
| Developer | Z.ai (Zhipu AI) | Moonshot AI |
| Type | llm | llm |
| License | open-weight | proprietary |
| Context window | — | 1,048,576 |
| Parameters | — | — |
| Developer status | — | — |
| Input $/M tokens | $1.40 | $2.00 |
| Output $/M tokens | $4.40 | $10.00 |
Bold green values indicate the winner on that dimension where comparison is meaningful (lower price wins; bigger context wins; more open license wins; newer date wins). Prices are the ones each developer lists today; a model it no longer prices has none.
No exclusive capabilities
Programmatic access available at /api/ai/compare?a=glm-5-3&b=kimi-k3-1-pro. CORS is open. Citation guidance: /about/editorial-process.