# Best AI model per dollar for factuality — October 2026

As of Oct 15, 2026, Gemini 4 Argon & Mimo V2.6 Pro & DeepSeek V4.1 Flash & GPT-6 Luna & Mimo V2.6 Flash & Hy3 & DeepSeek V4 Flash & GPT Oss 120B are tied for state of the art in Factuality, best per dollar (tracked since Oct 14, 2026; sources LMArena Text factuality; methodology v1.0).

Category board: https://isitsota.com/c/factuality?slice=pareto

## Top 10

- #1 Gemini 4 Argon
- #1 Mimo V2.6 Pro
- #1 DeepSeek V4.1 Flash
- #1 GPT-6 Luna
- #1 Mimo V2.6 Flash
- #1 Hy3
- #1 DeepSeek V4 Flash
- #1 GPT Oss 120B
- #2 Claude Fable 5.1
- #3 Claude Opus 4.6

## Crown changes


## Weights

- SimpleQA Verified: primary, weight 1
- LMArena Text factuality: primary, weight 0.8