Head-to-head · LFM
LFM2 350M vs LFM2.5 1.2B Thinking
LFM2 350M needs ~1.4 GB at Q4_K_M; LFM2.5 1.2B Thinking needs ~1.8 GB. That ~0.4 GB gap decides which hardware runs each; they differ on 0 of the 14 devices below.
Which devices run each
A representative spread across the memory range. Tap a verdict for the full breakdown.
Size at each quantization
* derived from bits-per-weight; unstarred sizes are measured GGUF files.
Bottom line
The larger LFM2.5 1.2B Thinking needs ~1.8 GB; LFM2 350M runs on lighter hardware at ~1.4 GB with more headroom and faster responses. Check each against your exact device: what runs LFM2 350M · what runs LFM2.5 1.2B Thinking.
More LFM comparisons
FAQ
What is the difference in memory between LFM2 350M and LFM2.5 1.2B Thinking?
At Q4_K_M, LFM2 350M needs about 1.4 GB and LFM2.5 1.2B Thinking needs about 1.8 GB, a difference of ~0.4 GB.
Should I run LFM2 350M or LFM2.5 1.2B Thinking?
Run LFM2.5 1.2B Thinking if your hardware has the ~1.8 GB it needs and you want maximum quality; run LFM2 350M (~1.4 GB) for lighter hardware, faster responses, and more memory headroom.
Full breakdowns: LFM2 350M · LFM2.5 1.2B Thinking · all models × devices.
Sources
Memory figures are estimates at Q4_K_M, validated 2026-08-03. See methodology.