Claude Sonnet 4.6 vs GPT-5.6 Terra
As of Oct 14, 2026, Claude Sonnet 4.6 leads GPT-5.6 Terra in 4 of 8 shared categories: General LLM, Reasoning, Coding › Web dev, and Long context.
Claude Sonnet 4.6
It used to be. Was SOTA in Long context.
GPT-5.6 Terra
#4 Best recorded rank: #4 in Abstraction (ARC), as of Oct 14, 2026.
| Category | Claude Sonnet 4.6 | GPT-5.6 Terra |
|---|---|---|
| General LLM | #32 · #32 in General LLM Margin 21.768707482993193 LMArena leaderboard dataset · Oct 13, 2026 | #35 · #35 in General LLM Margin 23.80952380952381 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #20 · #20 in Reasoning Margin 14.38356164383562 LMArena leaderboard dataset · Oct 13, 2026 | #35 · #35 in Reasoning Margin 24.657534246575338 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 | #50 · #50 in Science Margin — Epoch AI benchmarking hub · Feb 17, 2026 | #15 · #15 in Science Margin — Epoch AI benchmarking hub · Jul 9, 2026 |
| Coding | #— · Not enough data Margin — Epoch AI benchmarking hub · Feb 17, 2026 | #13 · #13 in Coding Margin 63.63636363636363 Terminal-Bench Harbor Hub · Oct 6, 2026 |
| Coding › Agentic | — | #13 · #13 in Coding › Agentic Margin 63.63636363636363 Terminal-Bench Harbor Hub · Oct 6, 2026 |
| Coding › Web dev | #41 · #41 in Coding › Web dev Margin 37.38317757009346 LMArena leaderboard dataset · Oct 13, 2026 | #42 · #42 in Coding › Web dev Margin 38.3177570093458 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #20 · Was SOTA · Long context Margin 13.605442176870753 LMArena leaderboard dataset · Oct 13, 2026 | #46 · #46 in Long context Margin 31.292517006802726 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #23 · Was SOTA · Vision Margin 63.1578947368421 Epoch AI benchmarking hub · Feb 17, 2026 | #11 · #11 in Vision Margin 31.578947368421055 Epoch AI benchmarking hub · Jul 9, 2026 |
| Factuality | #34 · #34 in Factuality Margin 26.11940298507463 LMArena leaderboard dataset · Oct 13, 2026 | #24 · #24 in Factuality Margin 18.656716417910445 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #23 · #23 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Feb 17, 2026 | #4 · #4 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Jul 9, 2026 |
Claude Sonnet 4.6: $6 per 1M blended tokens.
GPT-5.6 Terra: $4.5 per 1M blended tokens.
Claude Sonnet 4.6: closed weights.
GPT-5.6 Terra: closed weights.
General LLM: As of Oct 14, 2026, Claude Sonnet 4.6 leads GPT-5.6 Terra in General LLM at #32 against #35.
Reasoning: As of Oct 14, 2026, Claude Sonnet 4.6 leads GPT-5.6 Terra in Reasoning at #20 against #35.
Science: As of Oct 14, 2026, GPT-5.6 Terra leads Claude Sonnet 4.6 in Science at #15 against #50.
Coding › Web dev: As of Oct 14, 2026, Claude Sonnet 4.6 leads GPT-5.6 Terra in Coding › Web dev at #41 against #42.
Long context: As of Oct 14, 2026, Claude Sonnet 4.6 leads GPT-5.6 Terra in Long context at #20 against #46.
Vision: As of Oct 14, 2026, GPT-5.6 Terra leads Claude Sonnet 4.6 in Vision at #11 against #23.
Factuality: As of Oct 14, 2026, GPT-5.6 Terra leads Claude Sonnet 4.6 in Factuality at #24 against #34.
Abstraction (ARC): As of Oct 14, 2026, GPT-5.6 Terra leads Claude Sonnet 4.6 in Abstraction (ARC) at #4 against #23.
Claude Sonnet 4.6 · GPT-5.6 Terra
Claude Sonnet 4.6 or GPT-5.6 Terra?
As of Oct 14, 2026, Claude Sonnet 4.6 leads GPT-5.6 Terra in 4 of 8 shared categories: General LLM, Reasoning, Coding › Web dev, and Long context.
Claude Sonnet 4.6 or GPT-5.6 Terra for General LLM?
As of Oct 14, 2026, Claude Sonnet 4.6 leads GPT-5.6 Terra in General LLM at #32 against #35.
Claude Sonnet 4.6 or GPT-5.6 Terra for Reasoning?
As of Oct 14, 2026, Claude Sonnet 4.6 leads GPT-5.6 Terra in Reasoning at #20 against #35.
Claude Sonnet 4.6 or GPT-5.6 Terra for Science?
As of Oct 14, 2026, GPT-5.6 Terra leads Claude Sonnet 4.6 in Science at #15 against #50.