GPT-5.4 vs GPT-5.6 Terra
As of Oct 14, 2026, GPT-5.4 leads GPT-5.6 Terra in 4 of 7 shared categories: General LLM, Reasoning, Long context, and Factuality.
GPT-5.4
It used to be. Was SOTA in General LLM.
GPT-5.6 Terra
#4 Best recorded rank: #4 in Abstraction (ARC), as of Oct 14, 2026.
| Category | GPT-5.4 | GPT-5.6 Terra |
|---|---|---|
| General LLM | #28 · Was SOTA · General LLM Margin 19.04761904761905 LMArena leaderboard dataset · Oct 13, 2026 | #35 · #35 in General LLM Margin 23.80952380952381 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #29 · #29 in Reasoning Margin 20.54794520547945 LMArena leaderboard dataset · Oct 13, 2026 | #35 · #35 in Reasoning Margin 24.657534246575338 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #9 · #9 in Math Margin 17.777777777777757 Epoch AI benchmarking hub · Mar 5, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Science | #16 · #16 in Science Margin — Epoch AI benchmarking hub · Mar 5, 2026 | #15 · #15 in Science Margin — Epoch AI benchmarking hub · Jul 9, 2026 |
| Coding | #— · Not enough data Margin — Epoch AI benchmarking hub · Mar 5, 2026 | #13 · #13 in Coding Margin 63.63636363636363 Terminal-Bench Harbor Hub · Oct 6, 2026 |
| Coding › Agentic | — | #13 · #13 in Coding › Agentic Margin 63.63636363636363 Terminal-Bench Harbor Hub · Oct 6, 2026 |
| Coding › Web dev | #55 · #55 in Coding › Web dev Margin 50.467289719626166 LMArena leaderboard dataset · Oct 13, 2026 | #42 · #42 in Coding › Web dev Margin 38.3177570093458 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #34 · #34 in Long context Margin 23.12925170068027 LMArena leaderboard dataset · Oct 13, 2026 | #46 · #46 in Long context Margin 31.292517006802726 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 9, 2026 | #11 · #11 in Vision Margin 31.578947368421055 Epoch AI benchmarking hub · Jul 9, 2026 |
| Factuality | #6 · Was SOTA · Factuality Margin 5.22388059701494 LMArena leaderboard dataset · Oct 13, 2026 | #24 · #24 in Factuality Margin 18.656716417910445 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #10 · #10 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Mar 5, 2026 | #4 · #4 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Jul 9, 2026 |
GPT-5.4: $5.625 per 1M blended tokens.
GPT-5.6 Terra: $4.5 per 1M blended tokens.
GPT-5.4: closed weights.
GPT-5.6 Terra: closed weights.
General LLM: As of Oct 14, 2026, GPT-5.4 leads GPT-5.6 Terra in General LLM at #28 against #35.
Reasoning: As of Oct 14, 2026, GPT-5.4 leads GPT-5.6 Terra in Reasoning at #29 against #35.
Science: As of Oct 14, 2026, GPT-5.6 Terra leads GPT-5.4 in Science at #15 against #16.
Coding › Web dev: As of Oct 14, 2026, GPT-5.6 Terra leads GPT-5.4 in Coding › Web dev at #42 against #55.
Long context: As of Oct 14, 2026, GPT-5.4 leads GPT-5.6 Terra in Long context at #34 against #46.
Factuality: As of Oct 14, 2026, GPT-5.4 leads GPT-5.6 Terra in Factuality at #6 against #24.
Abstraction (ARC): As of Oct 14, 2026, GPT-5.6 Terra leads GPT-5.4 in Abstraction (ARC) at #4 against #10.
GPT-5.4 or GPT-5.6 Terra?
As of Oct 14, 2026, GPT-5.4 leads GPT-5.6 Terra in 4 of 7 shared categories: General LLM, Reasoning, Long context, and Factuality.
GPT-5.4 or GPT-5.6 Terra for General LLM?
As of Oct 14, 2026, GPT-5.4 leads GPT-5.6 Terra in General LLM at #28 against #35.
GPT-5.4 or GPT-5.6 Terra for Reasoning?
As of Oct 14, 2026, GPT-5.4 leads GPT-5.6 Terra in Reasoning at #29 against #35.
GPT-5.4 or GPT-5.6 Terra for Science?
As of Oct 14, 2026, GPT-5.6 Terra leads GPT-5.4 in Science at #15 against #16.