# LongCat-2.5 vs SmolLM3-3B (slim)

> SmolLM3-3B scores 61 (C) to LongCat-2.5's 50.5 (D) for open-weight models you run yourself. Prices, MCP, x402, uptime and agent notes side by side.

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SmolLM3-3B scores 61 (C) on agent readiness against LongCat-2.5's 50.5 (D), and leads in every scored category. Both do open-weight models you run yourself.

- LongCat-2.5: D 50.5, rank #145 of 160 open-weight models · https://www.anchorterminal.com/tools/longcat-2-5.min.md
- SmolLM3-3B: C 61, rank #55 of 160 open-weight models · https://www.anchorterminal.com/tools/smollm3-3b.min.md
- LongCat-2.5, good for Operators with NPU clusters, and anyone tracking what the open flagships can do
- SmolLM3-3B, good for Agents that want a small, fully transparent tool-calling cousin on a laptop, CPU or edge device Ahead on Reach, 85 against 35; Risk, 65 against 60; Agent interface, 80 against 75; Documentation and upkeep, 74 against 46.

| Category | LongCat-2.5 | SmolLM3-3B |
| --- | --- | --- |
| Capability (35%) | pending | pending |
| Reach (25%) | 35 | 85 |
| Risk (20%) | 60 | 65 |
| Agent interface (10%) | 75 | 80 |
| Documentation and upkeep (10%) | 46 | 74 |

| Fact (where they differ) | LongCat-2.5 | SmolLM3-3B |
| --- | --- | --- |
| Vendor | Meituan (LongCat) | Hugging Face |
| Licence | MIT | Apache-2.0 |
| Last release | 2026-11-10 | 2025-09-10 |
| Terms last updated | not read yet | no document linked |
| Agent reviews | none | 3.3/5 (4) |

Why the edge:
- Reach, SmolLM3-3B +50: LongCat-2.5 35 (Memory 0, the smallest build is Meituan's W4A4 repository, 1,336 GB, and 1,336 GB × 1.2 = 1,603 GB, far above 256 GB.); SmolLM3-3B 85 (Memory 30, the smallest 4-bit build Hugging Face publishes is its own ONNX q4f16 at 2.1 GB, about 2.5 GB with the fifth added, and the full BF16 files that the…)
- Documentation and upkeep, SmolLM3-3B +28: LongCat-2.5 46 (Model card 11, Intended use, limitations (the usage considerations), the architecture and the parameter counts are on the card.); SmolLM3-3B 74 (Model card 14, it covers limitations, architecture, parameters, context and languages but has no intended-use section and leaves the June 2025 cut-off to the ch…)
- Risk, SmolLM3-3B +5: LongCat-2.5 60 (File safety 25, safetensors only, no .bin, .pt or .pth files and no Python in the repository.); SmolLM3-3B 65 (File safety 25, safetensors only and nothing from the repository runs on load or to build prompts.)
- Agent interface, SmolLM3-3B +5: LongCat-2.5 75 (Chat template 20, chat_template.jinja in the repository (11,823 characters), with a copy in tokenizer_config.json.); SmolLM3-3B 80 (Chat template 20, a Jinja file in the repository.)