# Kimi K3.1 Pro vs ZAYA1-8B (slim)

> ZAYA1-8B scores 61 (C) 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.

- Full: https://www.anchorterminal.com/compare/kimi-k3-1-pro-vs-zaya1-8b.md (~8,500 tokens) · this version ~630 tokens · JSON https://www.anchorterminal.com/compare/kimi-k3-1-pro-vs-zaya1-8b.json · canonical https://www.anchorterminal.com/compare/kimi-k3-1-pro-vs-zaya1-8b
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · MCP: https://www.anchorterminal.com/mcp · Updated: 2026-11-10
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ZAYA1-8B scores 61 (C) on agent readiness against Kimi K3.1 Pro's 48.6 (D), and leads in 2 of 4 scored categories. Kimi K3.1 Pro leads on agent interface. Both do open-weight models you run yourself.

- 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
- ZAYA1-8B: C 61, rank #85 of 160 open-weight models · https://www.anchorterminal.com/tools/zaya1-8b.min.md
- 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 Ahead on Agent interface, 65 against 60.
- ZAYA1-8B, good for People who want a small, fast reasoning model for maths and code and can live without tool calling Ahead on Reach, 80 against 40; Risk, 55 against 50.

| Category | Kimi K3.1 Pro | ZAYA1-8B |
| --- | --- | --- |
| Capability (35%) | pending | pending |
| Reach (25%) | 40 | 80 |
| Risk (20%) | 50 | 55 |
| Agent interface (10%) | 65 | 60 |
| Documentation and upkeep (10%) | 51 | 50 |

| Fact (where they differ) | Kimi K3.1 Pro | ZAYA1-8B |
| --- | --- | --- |
| Vendor | Moonshot AI | Zyphra |
| Licence | Kimi K3.1 Pro License (modified MIT) | Apache-2.0 |
| Last release | 2026-11-05 | 2026-07-02 |

Why the edge:
- Reach, ZAYA1-8B +40: Kimi K3.1 Pro 40 (Memory 0, the only build is Moonshot's 1,561 GB MXFP4 release, far above 256 GB.); ZAYA1-8B 80 (Memory 30, the smallest build from Zyphra is the MXFP4-Experts repository, 5.85 GB, and 5.85 GB × 1.2 = 7.0 GB, within 16 GB.)
- Risk, ZAYA1-8B +5: Kimi K3.1 Pro 50 (File safety 15, safetensors only, less 10 for remote code and prompts built by the repository's script.); ZAYA1-8B 55 (File safety 25, safetensors only, no .bin, .pt or .pth files and no Python in the repository.)
- Agent interface, Kimi K3.1 Pro +5: Kimi K3.1 Pro 65 (Chat template 10, the format is only code to run.); ZAYA1-8B 60 (Chat template 20, chat_template.jinja in the repository (10,700 characters).)