# Best open-weights AI model for coding — October 2026

As of Oct 14, 2026, GLM 5.3 & GLM 5.3 Flash are tied for state of the art in Coding, open weights (since Oct 6, 2026; sources Terminal-Bench 4.0; methodology v1.0).

Category board: https://isitsota.com/c/coding?slice=open-weights

## Top 10

- #1 GLM 5.3
- #1 GLM 5.3 Flash

## Crown changes

- Oct 6, 2026 — Coding: GLM 5.3 and GLM 5.3 Flash are co-SOTA

## Weights

- Terminal-Bench 4.0: primary, weight 1
- SWE-bench Pro V2 HARD: primary, weight 1
- LMArena Text (style-controlled, coding): primary, weight 0.6
- Terminal-Bench 2.0: secondary, weight 0.35
- Aider Polyglot: secondary, weight 0.35
- SWE-bench Verified: display, weight 0