Gemini 3.8 Flash vs GPT-6 Luna
As of Oct 14, 2026, Gemini 3.8 Flash leads GPT-6 Luna in 10 of 10 shared categories: General LLM, Reasoning, Science, Coding, Coding › Agentic, Coding › Web dev, Long context, Vision, Factuality, and Abstraction (ARC).
Gemini 3.8 Flash
Yes. Yes on General LLM (best per dollar); Reasoning (best per dollar). Not the overall leader.
GPT-6 Luna
Yes. Yes on Coding (best per dollar); Coding › Agentic (best per dollar). Not the overall leader.
| Category | Gemini 3.8 Flash | GPT-6 Luna |
|---|---|---|
| General LLM | #7 · Was SOTA · General LLM Margin 4.761904761904759 LMArena leaderboard dataset · Oct 13, 2026 | #65 · #65 in General LLM Margin 44.21768707482993 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #6 · #6 in Reasoning Margin 4.794520547945211 LMArena leaderboard dataset · Oct 13, 2026 | #61 · #61 in Reasoning Margin 42.465753424657535 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #5 · #5 in Math Margin 8.888888888888886 Epoch AI benchmarking hub · Sep 2, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Science | #4 · #4 in Science Margin — Epoch AI benchmarking hub · Sep 2, 2026 | #33 · #33 in Science Margin — Epoch AI benchmarking hub · Sep 22, 2026 |
| Coding | #15 · #15 in Coding Margin 72.72727272727272 Terminal-Bench Harbor Hub · Oct 6, 2026 | #17 · #17 in Coding Margin 81.81818181818181 Terminal-Bench Harbor Hub · Oct 6, 2026 |
| Coding › Agentic | #15 · #15 in Coding › Agentic Margin 72.72727272727272 Terminal-Bench Harbor Hub · Oct 6, 2026 | #17 · #17 in Coding › Agentic Margin 81.81818181818181 Terminal-Bench Harbor Hub · Oct 6, 2026 |
| Coding › Web dev | #27 · #27 in Coding › Web dev Margin 24.29906542056075 LMArena leaderboard dataset · Oct 13, 2026 | #29 · #29 in Coding › Web dev Margin 26.168224299065415 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #5 · Near-SOTA · Long context Margin 3.401360544217681 LMArena leaderboard dataset · Oct 13, 2026 | #61 · #61 in Long context Margin 41.49659863945578 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #15 · #15 in Vision Margin 42.10526315789474 Epoch AI benchmarking hub · Sep 2, 2026 | #17 · #17 in Vision Margin 47.36842105263158 Epoch AI benchmarking hub · Sep 22, 2026 |
| Factuality | #17 · #17 in Factuality Margin 13.43283582089552 LMArena leaderboard dataset · Oct 13, 2026 | #39 · #39 in Factuality Margin 29.85074626865672 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #1 · #1 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Sep 2, 2026 | #22 · #22 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Sep 22, 2026 |
Gemini 3.8 Flash: $1.5 per 1M blended tokens.
GPT-6 Luna: $0.19999999999999998 per 1M blended tokens.
Gemini 3.8 Flash: closed weights.
GPT-6 Luna: closed weights.
General LLM: As of Oct 14, 2026, Gemini 3.8 Flash leads GPT-6 Luna in General LLM at #7 against #65.
Reasoning: As of Oct 14, 2026, Gemini 3.8 Flash leads GPT-6 Luna in Reasoning at #6 against #61.
Science: As of Oct 14, 2026, Gemini 3.8 Flash leads GPT-6 Luna in Science at #4 against #33.
Coding: As of Oct 14, 2026, Gemini 3.8 Flash leads GPT-6 Luna in Coding at #15 against #17.
Coding › Agentic: As of Oct 14, 2026, Gemini 3.8 Flash leads GPT-6 Luna in Coding › Agentic at #15 against #17.
Coding › Web dev: As of Oct 14, 2026, Gemini 3.8 Flash leads GPT-6 Luna in Coding › Web dev at #27 against #29.
Long context: As of Oct 14, 2026, Gemini 3.8 Flash leads GPT-6 Luna in Long context at #5 against #61.
Vision: As of Oct 14, 2026, Gemini 3.8 Flash leads GPT-6 Luna in Vision at #15 against #17.
Factuality: As of Oct 14, 2026, Gemini 3.8 Flash leads GPT-6 Luna in Factuality at #17 against #39.
Abstraction (ARC): As of Oct 14, 2026, Gemini 3.8 Flash leads GPT-6 Luna in Abstraction (ARC) at #1 against #22.
Gemini 3.8 Flash or GPT-6 Luna?
As of Oct 14, 2026, Gemini 3.8 Flash leads GPT-6 Luna in 10 of 10 shared categories: General LLM, Reasoning, Science, Coding, Coding › Agentic, Coding › Web dev, Long context, Vision, Factuality, and Abstraction (ARC).
Gemini 3.8 Flash or GPT-6 Luna for General LLM?
As of Oct 14, 2026, Gemini 3.8 Flash leads GPT-6 Luna in General LLM at #7 against #65.
Gemini 3.8 Flash or GPT-6 Luna for Reasoning?
As of Oct 14, 2026, Gemini 3.8 Flash leads GPT-6 Luna in Reasoning at #6 against #61.
Gemini 3.8 Flash or GPT-6 Luna for Science?
As of Oct 14, 2026, Gemini 3.8 Flash leads GPT-6 Luna in Science at #4 against #33.