Gemini 3.1 Pro Preview vs GPT-5.6 Luna
As of Oct 15, 2026, Gemini 3.1 Pro Preview leads GPT-5.6 Luna in 6 of 8 shared categories: General LLM, Reasoning, Science, Long context, Factuality, and Abstraction (ARC).
Gemini 3.1 Pro Preview
Yes. Yes on Math (best per dollar). Not the overall leader.
GPT-5.6 Luna
#16 Best current rank: #16 in Coding, as of Oct 15, 2026.
| Category | Gemini 3.1 Pro Preview | GPT-5.6 Luna |
|---|---|---|
| General LLM | #15 · Was SOTA · General LLM Margin 10.204081632653057 LMArena leaderboard dataset · Oct 13, 2026 | #53 · #53 in General LLM Margin 36.054421768707485 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #14 · Was SOTA · Reasoning Margin 10.273972602739732 LMArena leaderboard dataset · Oct 13, 2026 | #55 · #55 in Reasoning Margin 38.35616438356164 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #3 · Near-SOTA · Math Margin 4.444444444444443 Epoch AI benchmarking hub · Feb 19, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Science | #7 · #7 in Science Margin — Epoch AI benchmarking hub · Feb 19, 2026 | #25 · #25 in Science Margin — Epoch AI benchmarking hub · Jul 9, 2026 |
| Coding | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 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 | #58 · #58 in Coding › Web dev Margin 53.271028037383175 LMArena leaderboard dataset · Oct 13, 2026 | #43 · #43 in Coding › Web dev Margin 39.25233644859813 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #12 · Was SOTA · Long context Margin 8.163265306122454 LMArena leaderboard dataset · Oct 13, 2026 | #65 · #65 in Long context Margin 44.21768707482993 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #25 · Was SOTA · Vision Margin 68.42105263157896 Epoch AI benchmarking hub · Feb 19, 2026 | #19 · #19 in Vision Margin 52.63157894736842 Epoch AI benchmarking hub · Jul 9, 2026 |
| Factuality | #18 · #18 in Factuality Margin 14.179104477611943 LMArena leaderboard dataset · Oct 13, 2026 | #35 · #35 in Factuality Margin 26.86567164179104 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #2 · #2 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Feb 19, 2026 | #19 · #19 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Jul 9, 2026 |
Gemini 3.1 Pro Preview: $4.5 per 1M blended tokens.
GPT-5.6 Luna: $0.44999999999999996 per 1M blended tokens.
Gemini 3.1 Pro Preview: closed weights.
GPT-5.6 Luna: closed weights.
General LLM: As of Oct 15, 2026, Gemini 3.1 Pro Preview leads GPT-5.6 Luna in General LLM at #15 against #53.
Reasoning: As of Oct 15, 2026, Gemini 3.1 Pro Preview leads GPT-5.6 Luna in Reasoning at #14 against #55.
Science: As of Oct 15, 2026, Gemini 3.1 Pro Preview leads GPT-5.6 Luna in Science at #7 against #25.
Coding › Web dev: As of Oct 15, 2026, GPT-5.6 Luna leads Gemini 3.1 Pro Preview in Coding › Web dev at #43 against #58.
Long context: As of Oct 15, 2026, Gemini 3.1 Pro Preview leads GPT-5.6 Luna in Long context at #12 against #65.
Vision: As of Oct 15, 2026, GPT-5.6 Luna leads Gemini 3.1 Pro Preview in Vision at #19 against #25.
Factuality: As of Oct 15, 2026, Gemini 3.1 Pro Preview leads GPT-5.6 Luna in Factuality at #18 against #35.
Abstraction (ARC): As of Oct 15, 2026, Gemini 3.1 Pro Preview leads GPT-5.6 Luna in Abstraction (ARC) at #2 against #19.
Gemini 3.1 Pro Preview · GPT-5.6 Luna
Gemini 3.1 Pro Preview or GPT-5.6 Luna?
As of Oct 15, 2026, Gemini 3.1 Pro Preview leads GPT-5.6 Luna in 6 of 8 shared categories: General LLM, Reasoning, Science, Long context, Factuality, and Abstraction (ARC).
Gemini 3.1 Pro Preview or GPT-5.6 Luna for General LLM?
As of Oct 15, 2026, Gemini 3.1 Pro Preview leads GPT-5.6 Luna in General LLM at #15 against #53.
Gemini 3.1 Pro Preview or GPT-5.6 Luna for Reasoning?
As of Oct 15, 2026, Gemini 3.1 Pro Preview leads GPT-5.6 Luna in Reasoning at #14 against #55.
Gemini 3.1 Pro Preview or GPT-5.6 Luna for Science?
As of Oct 15, 2026, Gemini 3.1 Pro Preview leads GPT-5.6 Luna in Science at #7 against #25.