Gemini 3.8 Flash vs GPT-5.6 Terra
As of Oct 15, 2026, Gemini 3.8 Flash leads GPT-5.6 Terra in 7 of 10 shared categories: General LLM, Reasoning, Science, Coding › Web dev, Long context, 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-5.6 Terra
#4 Best recorded rank: #4 in Abstraction (ARC), as of Oct 15, 2026.
| Category | Gemini 3.8 Flash | GPT-5.6 Terra |
|---|---|---|
| General LLM | #7 · Near-SOTA · General LLM Margin 3.723404255319153 LMArena leaderboard dataset · Oct 13, 2026 | #44 · #44 in General LLM Margin 23.40425531914893 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #6 · Near-SOTA · Reasoning Margin 3.723404255319153 LMArena leaderboard dataset · Oct 13, 2026 | #41 · #41 in Reasoning Margin 22.34042553191489 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 | #15 · #15 in Science Margin — Epoch AI benchmarking hub · Jul 9, 2026 |
| Coding | #15 · #15 in Coding Margin 72.72727272727272 Terminal-Bench Harbor Hub · Oct 6, 2026 | #13 · #13 in Coding Margin 63.63636363636363 Terminal-Bench Harbor Hub · Oct 6, 2026 |
| Coding › Agentic | #15 · #15 in Coding › Agentic Margin 72.72727272727272 Terminal-Bench Harbor Hub · Oct 6, 2026 | #13 · #13 in Coding › Agentic Margin 63.63636363636363 Terminal-Bench Harbor Hub · Oct 6, 2026 |
| Coding › Web dev | #29 · #29 in Coding › Web dev Margin 22.400000000000006 LMArena leaderboard dataset · Oct 13, 2026 | #44 · #44 in Coding › Web dev Margin 34.400000000000006 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #5 · Near-SOTA · Long context Margin 2.659574468085111 LMArena leaderboard dataset · Oct 13, 2026 | #54 · #54 in Long context Margin 28.723404255319153 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #15 · #15 in Vision Margin 42.10526315789474 Epoch AI benchmarking hub · Sep 2, 2026 | #11 · #11 in Vision Margin 31.578947368421055 Epoch AI benchmarking hub · Jul 9, 2026 |
| Factuality | #19 · #19 in Factuality Margin 11.6279069767442 LMArena leaderboard dataset · Oct 13, 2026 | #28 · #28 in Factuality Margin 16.860465116279073 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #1 · #1 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Sep 2, 2026 | #4 · #4 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Jul 9, 2026 |
Gemini 3.8 Flash: $1.5 per 1M blended tokens.
GPT-5.6 Terra: $4.5 per 1M blended tokens.
Gemini 3.8 Flash: closed weights.
GPT-5.6 Terra: closed weights.
General LLM: As of Oct 15, 2026, Gemini 3.8 Flash leads GPT-5.6 Terra in General LLM at #7 against #44.
Reasoning: As of Oct 15, 2026, Gemini 3.8 Flash leads GPT-5.6 Terra in Reasoning at #6 against #41.
Science: As of Oct 15, 2026, Gemini 3.8 Flash leads GPT-5.6 Terra in Science at #4 against #15.
Coding: As of Oct 15, 2026, GPT-5.6 Terra leads Gemini 3.8 Flash in Coding at #13 against #15.
Coding › Agentic: As of Oct 15, 2026, GPT-5.6 Terra leads Gemini 3.8 Flash in Coding › Agentic at #13 against #15.
Coding › Web dev: As of Oct 15, 2026, Gemini 3.8 Flash leads GPT-5.6 Terra in Coding › Web dev at #29 against #44.
Long context: As of Oct 15, 2026, Gemini 3.8 Flash leads GPT-5.6 Terra in Long context at #5 against #54.
Vision: As of Oct 15, 2026, GPT-5.6 Terra leads Gemini 3.8 Flash in Vision at #11 against #15.
Factuality: As of Oct 15, 2026, Gemini 3.8 Flash leads GPT-5.6 Terra in Factuality at #19 against #28.
Abstraction (ARC): As of Oct 15, 2026, Gemini 3.8 Flash leads GPT-5.6 Terra in Abstraction (ARC) at #1 against #4.
Gemini 3.8 Flash · GPT-5.6 Terra
Gemini 3.8 Flash or GPT-5.6 Terra?
As of Oct 15, 2026, Gemini 3.8 Flash leads GPT-5.6 Terra in 7 of 10 shared categories: General LLM, Reasoning, Science, Coding › Web dev, Long context, Factuality, and Abstraction (ARC).
Gemini 3.8 Flash or GPT-5.6 Terra for General LLM?
As of Oct 15, 2026, Gemini 3.8 Flash leads GPT-5.6 Terra in General LLM at #7 against #44.
Gemini 3.8 Flash or GPT-5.6 Terra for Reasoning?
As of Oct 15, 2026, Gemini 3.8 Flash leads GPT-5.6 Terra in Reasoning at #6 against #41.
Gemini 3.8 Flash or GPT-5.6 Terra for Science?
As of Oct 15, 2026, Gemini 3.8 Flash leads GPT-5.6 Terra in Science at #4 against #15.