Best AI model for coding — October 2026

Ranks

1. #1 Claude Opus 5.5
2. #1 Claude Sonnet 5.5
3. #2 GPT-6.1 Sol
4. #2 GPT-6 Astra
5. #3 Claude Fable 5.1
6. #4 Claude Opus 5
7. #5 GPT-6 Sol
8. #6 Claude Fable 5
9. #7 GLM 5.3
10. #8 Grok 4.7

Last crown changes

• Oct 6, 2026 — Coding: Claude Opus 5.5 and Claude Sonnet 5.5 are co-SOTA

Which benchmarks count

• 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