GPT-5.6 Terra vs O1 Preview
As of Oct 15, 2026, GPT-5.6 Terra leads O1 Preview in 5 of 5 shared categories: General LLM, Reasoning, Science, Long context, and Abstraction (ARC).
GPT-5.6 Terra
#4 Best recorded rank: #4 in Abstraction (ARC), as of Oct 15, 2026.
O1 Preview
It used to be. Was SOTA in General LLM.
| Category | GPT-5.6 Terra | O1 Preview |
|---|---|---|
| General LLM | #44 · #44 in General LLM Margin 23.40425531914893 LMArena leaderboard dataset · Oct 13, 2026 | #166 · Was SOTA · General LLM Margin 88.29787234042553 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #41 · #41 in Reasoning Margin 22.34042553191489 LMArena leaderboard dataset · Oct 13, 2026 | #177 · Was SOTA · Reasoning Margin 94.68085106382979 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Science | #15 · #15 in Science Margin — Epoch AI benchmarking hub · Jul 9, 2026 | #125 · #125 in Science Margin — Epoch AI benchmarking hub · Sep 12, 2024 |
| Coding | #13 · #13 in Coding Margin 63.63636363636363 Terminal-Bench Harbor Hub · Oct 6, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Coding › Agentic | #13 · #13 in Coding › Agentic Margin 63.63636363636363 Terminal-Bench Harbor Hub · Oct 6, 2026 | — |
| Coding › Web dev | #44 · #44 in Coding › Web dev Margin 34.400000000000006 LMArena leaderboard dataset · Oct 13, 2026 | — |
| Long context | #54 · #54 in Long context Margin 28.723404255319153 LMArena leaderboard dataset · Oct 13, 2026 | #176 · Was SOTA · Long context Margin 93.61702127659575 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #11 · #11 in Vision Margin 31.578947368421055 Epoch AI benchmarking hub · Jul 9, 2026 | — |
| Factuality | #28 · #28 in Factuality Margin 16.860465116279073 LMArena leaderboard dataset · Oct 13, 2026 | — |
| Abstraction (ARC) | #4 · #4 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Jul 9, 2026 | #73 · #73 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Sep 12, 2024 |
GPT-5.6 Terra: $4.5 per 1M blended tokens.
O1 Preview: price per 1M tokens is unset in the catalog.
GPT-5.6 Terra: closed weights.
O1 Preview: closed weights.
General LLM: As of Oct 15, 2026, GPT-5.6 Terra leads O1 Preview in General LLM at #44 against #166.
Reasoning: As of Oct 15, 2026, GPT-5.6 Terra leads O1 Preview in Reasoning at #41 against #177.
Science: As of Oct 15, 2026, GPT-5.6 Terra leads O1 Preview in Science at #15 against #125.
Long context: As of Oct 15, 2026, GPT-5.6 Terra leads O1 Preview in Long context at #54 against #176.
Abstraction (ARC): As of Oct 15, 2026, GPT-5.6 Terra leads O1 Preview in Abstraction (ARC) at #4 against #73.
GPT-5.6 Terra or O1 Preview?
As of Oct 15, 2026, GPT-5.6 Terra leads O1 Preview in 5 of 5 shared categories: General LLM, Reasoning, Science, Long context, and Abstraction (ARC).
GPT-5.6 Terra or O1 Preview for General LLM?
As of Oct 15, 2026, GPT-5.6 Terra leads O1 Preview in General LLM at #44 against #166.
GPT-5.6 Terra or O1 Preview for Reasoning?
As of Oct 15, 2026, GPT-5.6 Terra leads O1 Preview in Reasoning at #41 against #177.
GPT-5.6 Terra or O1 Preview for Science?
As of Oct 15, 2026, GPT-5.6 Terra leads O1 Preview in Science at #15 against #125.