Deterministic Stack Engine

Best AI Stack for cheapest frontier

Models that still clear a high Elo bar, sorted so price hurts.

Objective Weight Distribution

Elo:30%LiveBench:30%GPQA:25%Out $:15%

Recommended PickScore 83.0 / 100

OpenAI: o3 Mini

OpenAI · Closed flagship

Elo: 1,560 (Top 12%)LiveBench: 72.4% (Top 6%)GPQA: 87.2% (Top 5%)Out $: $4.4/1M (Top 69%)

Output: $4.4/1MSWE-bench: 78.5%

View full model fact sheet

Full Stack Leaderboard

Ranked alternatives optimized for cheapest frontier based on objective benchmark weighting.

#2Grok 4.6(xAI)

Score 80.7

Elo1,592LiveBench71.4%GPQA84.6%Out $$6/1M

Rank #2 in stackvs #1

#3Gemini 3.6 Pro(Google)

Score 80.0

Elo1,570LiveBench71.8%GPQA84.4%Out $$5/1M

Rank #3 in stackvs #1

#4GLM-5.3(Zhipu)

Score 78.7

Elo1,558LiveBench70.8%GPQA83.2%Out $$1.8/1M

Rank #4 in stackvs #1

#5Gemini 3 Pro(Google)

Score 74.6

Elo1,552LiveBench70.6%GPQA83.6%Out $$5/1M

Rank #5 in stackvs #1

#6DeepSeek V4 Pro(DeepSeek)

Score 73.9

Elo1,536LiveBench70.1%GPQA84%Out $$3.96/1M

Rank #6 in stackvs #1

#7Gemini 3.7 Flash(Google)

Score 72.1

Elo1,530LiveBench69.6%GPQA81.2%Out $$1.875/1M

Rank #7 in stackvs #1

#8MoonshotAI: Kimi K2.5(Moonshot)

Score 72.0

Elo1,515LiveBench67.2%GPQA87.6%Out $$2.85/1M

Rank #8 in stackvs #1

#9DeepSeek V4 Flash(DeepSeek)

Score 70.4

Elo1,490LiveBench67.8%GPQA81.6%Out $$0.28/1M

Rank #9 in stackvs #1

#10Qwen QwQ 32B(Alibaba)

Score 70.0

Elo1,495LiveBench68%GPQA83.2%Out $$1.2/1M

Rank #10 in stackvs #1