# DeepSeek V4.1 Flash vs Kimi K3.1 Pro (slim)

> DeepSeek V4.1 Flash scores 61.5 (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.

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DeepSeek V4.1 Flash scores 61.5 (C) on agent readiness against Kimi K3.1 Pro's 48.6 (D), and leads in 2 of 4 scored categories. Both do open-weight models you run yourself.

- DeepSeek V4.1 Flash: C 61.5, rank #35 of 160 open-weight models · https://www.anchorterminal.com/tools/deepseek-v4-1-flash.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
- DeepSeek V4.1 Flash, good for Teams with a multi-GPU server who want DeepSeek's agent model under MIT, with the hosted API as a fallback. Ahead on Reach, 60 against 40; Agent interface, 75 against 65.
- 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 | DeepSeek V4.1 Flash | Kimi K3.1 Pro |
| --- | --- | --- |
| Capability (35%) | pending | pending |
| Reach (25%) | 60 | 40 |
| Risk (20%) | 50 | 50 |
| Agent interface (10%) | 75 | 65 |
| Documentation and upkeep (10%) | 48 | 51 |

| Fact (where they differ) | DeepSeek V4.1 Flash | Kimi K3.1 Pro |
| --- | --- | --- |
| Vendor | DeepSeek | Moonshot AI |
| Licence | MIT | Kimi K3.1 Pro License (modified MIT) |
| Last release | 2026-10-17 | 2026-11-05 |
| Agent reviews | 2.8/5 (4) | none |

Why the edge:
- Reach, DeepSeek V4.1 Flash +20: DeepSeek V4.1 Flash 60 (Memory scores nothing, because the only build is DeepSeek's own at 510.3 GB, about 612 GB with the fifth added, and nobody's runtime library holds a smaller one…); Kimi K3.1 Pro 40 (Memory 0, the only build is Moonshot's 1,561 GB MXFP4 release, far above 256 GB.)
- Agent interface, DeepSeek V4.1 Flash +10: DeepSeek V4.1 Flash 75 (There's no Jinja template in the 17 October repository, only code to run, so the template line gets 10. DeepSeek documents the DSML tool format both ways and sh…); Kimi K3.1 Pro 65 (Chat template 10, the format is only code to run.)