Claude Opus 4.8 vs GPT-5
As of Oct 14, 2026, Claude Opus 4.8 leads GPT-5 in 7 of 7 shared categories: General LLM, Reasoning, Science, Coding › Web dev, Long context, Factuality, and Abstraction (ARC).
Claude Opus 4.8
It used to be. Was SOTA in Coding › Web dev.
GPT-5
It used to be. Was SOTA in General LLM.
| Category | Claude Opus 4.8 | GPT-5 |
|---|---|---|
| General LLM | #20 · #20 in General LLM Margin 13.605442176870753 LMArena leaderboard dataset · Oct 13, 2026 | #76 · Was SOTA · General LLM Margin 51.70068027210884 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #10 · #10 in Reasoning Margin 7.534246575342465 LMArena leaderboard dataset · Oct 13, 2026 | #78 · Was SOTA · Reasoning Margin 54.10958904109589 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 | #15 · Was SOTA · Math Margin 31.111111111111114 Epoch AI benchmarking hub · Aug 7, 2025 |
| Science | #27 · #27 in Science Margin — Epoch AI benchmarking hub · May 28, 2026 | #54 · #54 in Science Margin — Epoch AI benchmarking hub · Aug 7, 2025 |
| Coding | #12 · #12 in Coding Margin 59.09090909090909 Terminal-Bench Harbor Hub · Oct 6, 2026 | #— · Not enough data Margin — Epoch AI benchmarking hub · Aug 7, 2025 |
| Coding › Agentic | #12 · #12 in Coding › Agentic Margin 59.09090909090909 Terminal-Bench Harbor Hub · Oct 6, 2026 | — |
| Coding › Web dev | #33 · Was SOTA · Coding › Web dev Margin 29.90654205607477 LMArena leaderboard dataset · Oct 13, 2026 | #66 · #66 in Coding › Web dev Margin 60.74766355140187 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #10 · Was SOTA · Long context Margin 6.802721088435391 LMArena leaderboard dataset · Oct 13, 2026 | #107 · Was SOTA · Long context Margin 72.78911564625851 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #13 · #13 in Vision Margin 36.842105263157904 Epoch AI benchmarking hub · May 28, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 9, 2026 |
| Factuality | #21 · #21 in Factuality Margin 16.417910447761187 LMArena leaderboard dataset · Oct 13, 2026 | #93 · #93 in Factuality Margin 70.14925373134328 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #12 · #12 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · May 28, 2026 | #34 · #34 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Aug 7, 2025 |
Claude Opus 4.8: $10 per 1M blended tokens.
GPT-5: $3.4375000000000004 per 1M blended tokens.
Claude Opus 4.8: closed weights.
GPT-5: closed weights.
General LLM: As of Oct 14, 2026, Claude Opus 4.8 leads GPT-5 in General LLM at #20 against #76.
Reasoning: As of Oct 14, 2026, Claude Opus 4.8 leads GPT-5 in Reasoning at #10 against #78.
Science: As of Oct 14, 2026, Claude Opus 4.8 leads GPT-5 in Science at #27 against #54.
Coding › Web dev: As of Oct 14, 2026, Claude Opus 4.8 leads GPT-5 in Coding › Web dev at #33 against #66.
Long context: As of Oct 14, 2026, Claude Opus 4.8 leads GPT-5 in Long context at #10 against #107.
Factuality: As of Oct 14, 2026, Claude Opus 4.8 leads GPT-5 in Factuality at #21 against #93.
Abstraction (ARC): As of Oct 14, 2026, Claude Opus 4.8 leads GPT-5 in Abstraction (ARC) at #12 against #34.
Claude Opus 4.8 or GPT-5?
As of Oct 14, 2026, Claude Opus 4.8 leads GPT-5 in 7 of 7 shared categories: General LLM, Reasoning, Science, Coding › Web dev, Long context, Factuality, and Abstraction (ARC).
Claude Opus 4.8 or GPT-5 for General LLM?
As of Oct 14, 2026, Claude Opus 4.8 leads GPT-5 in General LLM at #20 against #76.
Claude Opus 4.8 or GPT-5 for Reasoning?
As of Oct 14, 2026, Claude Opus 4.8 leads GPT-5 in Reasoning at #10 against #78.
Claude Opus 4.8 or GPT-5 for Science?
As of Oct 14, 2026, Claude Opus 4.8 leads GPT-5 in Science at #27 against #54.