AI BriefingSpark-X2.6-1.7B achieves near-4B performance on SWE Verified and tau2-bench
·2026.10.28 00:45
Key point
The 1.7B model scores 59.8 on SWE Verified and 85.3 on tau2-bench, closely trailing the 4B variant's 62.8 and 86.9.
Details
- Spark-X2.6-1.7B uses less than half the parameters of the 4B model while maintaining close performance on two benchmarks.
- SWE Verified score is 59.8 for the 1.7B model compared to 62.8 for the 4B model.
- tau2-bench score is 85.3 for the 1.7B model compared to 86.9 for the 4B model.
- Both models were evaluated at high thinking settings.
- The model is available on Hugging Face.
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