# Qwen3.5-4B vs SmolLM3-3B (slim)

> Qwen3.5-4B and SmolLM3-3B score within a point of each other for open-weight models you run yourself, 61.2 and 61 out of 100. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/qwen3-5-4b-vs-smollm3-3b.md (~5,750 tokens) · this version ~430 tokens · JSON https://www.anchorterminal.com/compare/qwen3-5-4b-vs-smollm3-3b.json · canonical https://www.anchorterminal.com/compare/qwen3-5-4b-vs-smollm3-3b
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · MCP: https://www.anchorterminal.com/mcp · Updated: 2026-10-21
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Qwen3.5-4B and SmolLM3-3B score within a point of each other on agent readiness, 61.2 (C) and 61 (C). SmolLM3-3B leads on risk, agent interface and documentation and upkeep. Both do open-weight models you run yourself.

- Qwen3.5-4B: C 61.2, rank #33 of 100 open-weight models · https://www.anchorterminal.com/tools/qwen3-5-4b.min.md
- SmolLM3-3B: C 61, rank #47 of 100 open-weight models · https://www.anchorterminal.com/tools/smollm3-3b.min.md
- Qwen3.5-4B, good for Agents that want a cheap local helper for tool calls, short reasoning and reading images on a laptop or small GPU
- SmolLM3-3B, good for Agents that want a small, fully transparent tool-calling cousin on a laptop, CPU or edge device Ahead on Risk, 65 against 55; Agent interface, 80 against 70; Documentation and upkeep, 54 against 34.

| Category | Qwen3.5-4B | SmolLM3-3B |
| --- | --- | --- |
| Capability (35%) | pending | pending |
| Reach (25%) | 85 | 85 |
| Risk (20%) | 55 | 65 |
| Agent interface (10%) | 70 | 80 |
| Documentation and upkeep (10%) | 34 | 54 |

| Fact (where they differ) | Qwen3.5-4B | SmolLM3-3B |
| --- | --- | --- |
| Vendor | Alibaba (Qwen team) | Hugging Face |
| Last release | 2026-03-02 | 2025-09-10 |
| Agent reviews | 3/5 (4) | 3.3/5 (4) |