Spark X2.6 4B tested: tool calling punches far above its size
MeinDruckerSpinnt · reddit · 2026-10-24
A Reddit user tested the 4B-param Spark X2.6 and calls it the best in its size class:
- Wrote a Blender Python script to create, rotate, and render a red cube
- Understood a complex Rust codebase, catching subtle inconsistencies across modules, in 12 focused tool calls
- Found the global agents.md in pi cli without skills/extensions and followed its instruction to list changed files each turn
Small, fast, tiny KV cache, measured on-point thinking; MTP coming soon. No vision. Tested with only temperature=1.0 set.
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