# Best AI model for coding — October 2026

As of Oct 14, 2026, Claude Opus 5.5 & Claude Sonnet 5.5 are tied for state of the art in Coding (since Oct 6, 2026; sources Terminal-Bench 4.0; methodology v1.0).

Category board: https://isitsota.com/c/coding

## Top 10

- #1 Claude Opus 5.5
- #1 Claude Sonnet 5.5
- #2 GPT-6.1 Sol
- #2 GPT-6 Astra
- #3 Claude Fable 5.1
- #4 Claude Opus 5
- #5 GPT-6 Sol
- #6 Claude Fable 5
- #7 GLM 5.3
- #8 Grok 4.7

## Crown changes

- Oct 6, 2026 — Coding: Claude Opus 5.5 and Claude Sonnet 5.5 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