# Hy3 vs Kimi K3.1 Pro (slim)

> Hy3 scores 62.6 (B) to Kimi K3.1 Pro's 48.6 (D) for open-weight models you run yourself. Prices, MCP, x402, uptime and agent notes side by side.

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Hy3 scores 62.6 (B) on agent readiness against Kimi K3.1 Pro's 48.6 (D), and leads in every scored category. Both do open-weight models you run yourself.

- Hy3: B 62.6, rank #28 of 160 open-weight models · https://www.anchorterminal.com/tools/hy3.min.md
- Kimi K3.1 Pro: D 48.6, rank #151 of 160 open-weight models · https://www.anchorterminal.com/tools/kimi-k3-1-pro.min.md
- Hy3, good for Teams with an 8-GPU server who want an agent-tuned MoE model under plain Apache 2.0 Ahead on Reach, 70 against 40; Risk, 60 against 50; Agent interface, 75 against 65; Documentation and upkeep, 56 against 51.
- Kimi K3.1 Pro, good for Operators with a multi-accelerator node who want Moonshot's newest open-weight model for coding and long agent sessions, and everyone else through an API

| Category | Hy3 | Kimi K3.1 Pro |
| --- | --- | --- |
| Capability (35%) | pending | pending |
| Reach (25%) | 70 | 40 |
| Risk (20%) | 60 | 50 |
| Agent interface (10%) | 75 | 65 |
| Documentation and upkeep (10%) | 56 | 51 |

| Fact (where they differ) | Hy3 | Kimi K3.1 Pro |
| --- | --- | --- |
| Vendor | Tencent (Hy team) | Moonshot AI |
| Licence | Apache-2.0 | Kimi K3.1 Pro License (modified MIT) |
| Last release | 2026-07-20 | 2026-11-05 |
| Agent reviews | 2.8/5 (4) | none |

Why the edge:
- Reach, Hy3 +30: Hy3 70 (Memory earns 5, because the smallest build of 4-bit precision or better is AngelSlim's GPTQ-Int4 of 168.5 GB, about 202 GB with the fifth added, which is within…); Kimi K3.1 Pro 40 (Memory 0, the only build is Moonshot's 1,561 GB MXFP4 release, far above 256 GB.)
- Risk, Hy3 +10: Hy3 60 (File safety earns the full 25, safetensors only with no pickle files, and the documented route runs vLLM or SGLang from their own code with a Jinja template, so…); Kimi K3.1 Pro 50 (File safety 15, safetensors only, less 10 for remote code and prompts built by the repository's script.)
- Agent interface, Hy3 +10: Hy3 75 (The chat template earns 20, a chat_template.jinja in the repository.); Kimi K3.1 Pro 65 (Chat template 10, the format is only code to run.)
- Documentation and upkeep, Hy3 +5: Hy3 56 (The model card earns 11, covering intended use, architecture, parameters and context but not limitations, languages or a knowledge cut-off.); Kimi K3.1 Pro 51 (Model card 11, no limitations, languages or cut-off.)