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LLM Pareto Frontier — edition 2026-09

Living report · updated monthly · last updated
Edition: 2026-09 — archived snapshot, see the latest edition

Archived snapshot of the LLM Pareto Frontier living report, as published on 2026-09-22. Data: Artificial Analysis model pages, Intelligence Index and vendor list prices, fetched 2026-09-22.

$0$10$20$30$40$50 Output price, $ per 1M tokens 253035404550 AA Intelligence Index Claude Opus 5 GPT-5.6 Sol Claude Fable 5 Opus 4.8 GPT-5.5 Sonnet 5 GPT-5.4 Gemini 3.5 Flash GPT-6 Astra Claude Fable 5.1 Kimi K3 Qwen3.8 Max GLM 5.2 MiniMax M3 Kimi K2.6 Kimi K2.7 DeepSeek V4 Flash GLM 5.3 GLM-5.3-Flash DeepSeek V4.1 Flash MiMo-V2.6-Pro the top open model is 7 pointsoff the top score — at 1/57 the price Open weights Proprietary Pareto frontier

Frontier this edition: GLM-5.3-Flash → MiMo-V2.6-Pro → GPT-5.6 Sol → Claude Opus 5 → GPT-6 Astra → Claude Fable 5.1.

ModelAA IndexInput $/MOutput $/MWeightsPareto-efficient
GPT-6 Astra53$10.00$50.00closed
Claude Fable 5.153$10.00$50.00closed
Claude Opus 551$5.00$25.00closed
Claude Fable 550$10.00$50.00closeddominated by GPT-6 Astra
GPT-5.6 Sol47$4.00$20.00closed
MiMo-V2.6-Pro46$0.43$0.87open
GLM 5.345$1.40$4.40opendominated by MiMo-V2.6-Pro
Qwen3.8 Max45$2.00$6.00openmatched by GLM 5.3 at 1.4× less
Kimi K344$3.00$15.00opendominated by MiMo-V2.6-Pro
GLM-5.3-Flash42$0.15$0.50open
Opus 4.842$5.00$25.00closedmatched by GLM-5.3-Flash at 50.0× less
DeepSeek V4.1 Flash39$0.30$1.20opendominated by MiMo-V2.6-Pro
GPT-5.439$2.50$15.00closedmatched by DeepSeek V4.1 Flash at 12.5× less
Sonnet 538$2.00$10.00closeddominated by MiMo-V2.6-Pro
GPT-5.538$5.00$30.00closedmatched by Sonnet 5 at 3.0× less
DeepSeek V4 Flash34$0.44$1.32opendominated by MiMo-V2.6-Pro
GLM 5.234$1.40$4.40openmatched by DeepSeek V4 Flash at 3.3× less
Gemini 3.5 Flash33$1.50$9.00closeddominated by MiMo-V2.6-Pro
MiniMax M329$0.30$1.20opendominated by MiMo-V2.6-Pro
Kimi K2.627$0.95$4.00opendominated by MiMo-V2.6-Pro
Kimi K2.726$0.95$4.00opendominated by MiMo-V2.6-Pro