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Compare · 2026-10-15

GPT-4 Turbo vs GPT-5.1

As of Oct 15, 2026, GPT-4 Turbo leads GPT-5.1 in 1 of 2 shared categories: General LLM.

CategoryGPT-4 TurboGPT-5.1
General LLM
#11 · #11 in General LLM
Margin —
LMArena leaderboard dataset · Oct 23, 2024
#60 · #60 in General LLM
Margin 31.914893617021278
LMArena leaderboard dataset · Oct 13, 2026
Reasoning
#— · Not enough data
Margin —
LMArena leaderboard dataset · Sep 4, 2024
#62 · #62 in Reasoning
Margin 33.51063829787235
LMArena leaderboard dataset · Oct 13, 2026
Math—
#18 · #18 in Math
Margin 37.77777777777778
Epoch AI benchmarking hub · Nov 13, 2025
Science
#139 · #139 in Science
Margin —
Epoch AI benchmarking hub · Apr 9, 2024
#48 · #48 in Science
Margin —
Epoch AI benchmarking hub · Nov 13, 2025
Coding
#— · Not enough data
Margin —
LMArena leaderboard dataset · Sep 15, 2024
#— · Not enough data
Margin —
LMArena leaderboard dataset · Oct 13, 2026
Coding › Web dev—
#82 · #82 in Coding › Web dev
Margin 64.8
LMArena leaderboard dataset · Oct 13, 2026
Long context—
#66 · #66 in Long context
Margin 35.1063829787234
LMArena leaderboard dataset · Oct 13, 2026
Vision
#— · Not enough data
Margin —
LMArena leaderboard dataset · Oct 9, 2026
#— · Not enough data
Margin —
LMArena leaderboard dataset · Oct 9, 2026
Factuality—
#42 · #42 in Factuality
Margin 25
LMArena leaderboard dataset · Oct 13, 2026
Abstraction (ARC)—
#31 · #31 in Abstraction (ARC)
Margin —
Epoch AI benchmarking hub · Nov 13, 2025
Price per 1M tokens

GPT-4 Turbo: $15.000000000000002 per 1M blended tokens.

GPT-5.1: $3.4375000000000004 per 1M blended tokens.

Open weights

GPT-4 Turbo: closed weights.

GPT-5.1: closed weights.

Which to pick

General LLM: As of Oct 15, 2026, GPT-4 Turbo leads GPT-5.1 in General LLM at #11 against #60.

Science: As of Oct 15, 2026, GPT-5.1 leads GPT-4 Turbo in Science at #48 against #139.

GPT-4 Turbo · GPT-5.1

GPT-4 Turbo or GPT-5.1?

As of Oct 15, 2026, GPT-4 Turbo leads GPT-5.1 in 1 of 2 shared categories: General LLM.

GPT-4 Turbo or GPT-5.1 for General LLM?

As of Oct 15, 2026, GPT-4 Turbo leads GPT-5.1 in General LLM at #11 against #60.

GPT-4 Turbo or GPT-5.1 for Science?

As of Oct 15, 2026, GPT-5.1 leads GPT-4 Turbo in Science at #48 against #139.