GPT-5.4 vs GPT-5.6 Luna
As of Oct 14, 2026, GPT-5.4 leads GPT-5.6 Luna in 6 of 7 shared categories: General LLM, Reasoning, Science, Long context, Factuality, and Abstraction (ARC).
GPT-5.4
It used to be. Was SOTA in General LLM.
GPT-5.6 Luna
#16 Best current rank: #16 in Coding, as of Oct 14, 2026.
| Category | GPT-5.4 | GPT-5.6 Luna |
|---|---|---|
| General LLM | #28 · Was SOTA · General LLM Margin 19.04761904761905 LMArena leaderboard dataset · Oct 13, 2026 | #53 · #53 in General LLM Margin 36.054421768707485 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #29 · #29 in Reasoning Margin 20.54794520547945 LMArena leaderboard dataset · Oct 13, 2026 | #55 · #55 in Reasoning Margin 38.35616438356164 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 | #25 · #25 in Science Margin — Epoch AI benchmarking hub · Jul 9, 2026 |
| Coding | #— · Not enough data Margin — Epoch AI benchmarking hub · Mar 5, 2026 | #16 · #16 in Coding Margin 77.27272727272728 Terminal-Bench Harbor Hub · Oct 6, 2026 |
| Coding › Agentic | — | #16 · #16 in Coding › Agentic Margin 77.27272727272728 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 | #43 · #43 in Coding › Web dev Margin 39.25233644859813 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #34 · #34 in Long context Margin 23.12925170068027 LMArena leaderboard dataset · Oct 13, 2026 | #65 · #65 in Long context Margin 44.21768707482993 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 9, 2026 | #19 · #19 in Vision Margin 52.63157894736842 Epoch AI benchmarking hub · Jul 9, 2026 |
| Factuality | #6 · Was SOTA · Factuality Margin 5.22388059701494 LMArena leaderboard dataset · Oct 13, 2026 | #35 · #35 in Factuality Margin 26.86567164179104 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #10 · #10 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Mar 5, 2026 | #19 · #19 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Jul 9, 2026 |
GPT-5.4: $5.625 per 1M blended tokens.
GPT-5.6 Luna: $0.44999999999999996 per 1M blended tokens.
GPT-5.4: closed weights.
GPT-5.6 Luna: closed weights.
General LLM: As of Oct 14, 2026, GPT-5.4 leads GPT-5.6 Luna in General LLM at #28 against #53.
Reasoning: As of Oct 14, 2026, GPT-5.4 leads GPT-5.6 Luna in Reasoning at #29 against #55.
Science: As of Oct 14, 2026, GPT-5.4 leads GPT-5.6 Luna in Science at #16 against #25.
Coding › Web dev: As of Oct 14, 2026, GPT-5.6 Luna leads GPT-5.4 in Coding › Web dev at #43 against #55.
Long context: As of Oct 14, 2026, GPT-5.4 leads GPT-5.6 Luna in Long context at #34 against #65.
Factuality: As of Oct 14, 2026, GPT-5.4 leads GPT-5.6 Luna in Factuality at #6 against #35.
Abstraction (ARC): As of Oct 14, 2026, GPT-5.4 leads GPT-5.6 Luna in Abstraction (ARC) at #10 against #19.
GPT-5.4 or GPT-5.6 Luna?
As of Oct 14, 2026, GPT-5.4 leads GPT-5.6 Luna in 6 of 7 shared categories: General LLM, Reasoning, Science, Long context, Factuality, and Abstraction (ARC).
GPT-5.4 or GPT-5.6 Luna for General LLM?
As of Oct 14, 2026, GPT-5.4 leads GPT-5.6 Luna in General LLM at #28 against #53.
GPT-5.4 or GPT-5.6 Luna for Reasoning?
As of Oct 14, 2026, GPT-5.4 leads GPT-5.6 Luna in Reasoning at #29 against #55.
GPT-5.4 or GPT-5.6 Luna for Science?
As of Oct 14, 2026, GPT-5.4 leads GPT-5.6 Luna in Science at #16 against #25.