# Qwen3-4B-Instruct-2507 vs Spark-X2.6-4B (slim)

> Spark-X2.6-4B scores 61 (C) to Qwen3-4B-Instruct-2507's 55.7 (C) for open-weight models you run yourself. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/qwen3-4b-instruct-2507-vs-spark-x2-6-4b.md (~6,450 tokens) · this version ~430 tokens · JSON https://www.anchorterminal.com/compare/qwen3-4b-instruct-2507-vs-spark-x2-6-4b.json · canonical https://www.anchorterminal.com/compare/qwen3-4b-instruct-2507-vs-spark-x2-6-4b
- 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
- Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data)

Spark-X2.6-4B scores 61 (C) on agent readiness against Qwen3-4B-Instruct-2507's 55.7 (C), and leads in 1 of 4 scored categories. Qwen3-4B-Instruct-2507 leads on reach, risk and agent interface. Both do open-weight models you run yourself.

- Qwen3-4B-Instruct-2507: C 55.7, rank #77 of 100 open-weight models · https://www.anchorterminal.com/tools/qwen3-4b-instruct-2507.min.md
- Spark-X2.6-4B: C 61, rank #48 of 100 open-weight models · https://www.anchorterminal.com/tools/spark-x2-6-4b.min.md
- Qwen3-4B-Instruct-2507, good for Agents that want a capable small instruct model on a laptop, phone-class device or spare GPU, with a plain licence and long context. Ahead on Reach, 95 against 85; Risk, 55 against 50; Agent interface, 75 against 70.
- Spark-X2.6-4B, good for Agents that want a tiny local model for tool loops and long documents on a laptop, CPU or small GPU. Ahead on Documentation and upkeep, 41 against 26.

| Category | Qwen3-4B-Instruct-2507 | Spark-X2.6-4B |
| --- | --- | --- |
| Capability (35%) | pending | pending |
| Reach (25%) | 95 | 85 |
| Risk (20%) | 55 | 50 |
| Agent interface (10%) | 75 | 70 |
| Documentation and upkeep (10%) | 26 | 41 |

| Fact (where they differ) | Qwen3-4B-Instruct-2507 | Spark-X2.6-4B |
| --- | --- | --- |
| Vendor | Alibaba (Qwen team) | SparkLLM (XHToken) |
| Last release | 2025-09-17 | 2026-10-20 |