Claude Opus 4.8 vs GPT-5 Mini
As of Oct 14, 2026, Claude Opus 4.8 leads GPT-5 Mini in 6 of 6 shared categories: General LLM, Reasoning, Science, Long context, Factuality, and Abstraction (ARC).
Claude Opus 4.8
It used to be. Was SOTA in Coding › Web dev.
GPT-5 Mini
It used to be. Was SOTA in Math.
| Category | Claude Opus 4.8 | GPT-5 Mini |
|---|---|---|
| General LLM | #20 · #20 in General LLM Margin 13.605442176870753 LMArena leaderboard dataset · Oct 13, 2026 | #128 · #128 in General LLM Margin 87.07482993197279 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #10 · #10 in Reasoning Margin 7.534246575342465 LMArena leaderboard dataset · Oct 13, 2026 | #130 · #130 in Reasoning Margin 89.72602739726028 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 | #21 · Was SOTA · Math Margin 44.44444444444444 Epoch AI benchmarking hub · Aug 7, 2025 |
| Science | #27 · #27 in Science Margin — Epoch AI benchmarking hub · May 28, 2026 | #81 · #81 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 | — |
| Long context | #10 · Was SOTA · Long context Margin 6.802721088435391 LMArena leaderboard dataset · Oct 13, 2026 | #146 · #146 in Long context Margin 99.31972789115646 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 | #110 · #110 in Factuality Margin 82.83582089552239 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #12 · #12 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · May 28, 2026 | #41 · #41 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Aug 7, 2025 |
Claude Opus 4.8: $10 per 1M blended tokens.
GPT-5 Mini: $0.6875 per 1M blended tokens.
Claude Opus 4.8: closed weights.
GPT-5 Mini: closed weights.
General LLM: As of Oct 14, 2026, Claude Opus 4.8 leads GPT-5 Mini in General LLM at #20 against #128.
Reasoning: As of Oct 14, 2026, Claude Opus 4.8 leads GPT-5 Mini in Reasoning at #10 against #130.
Science: As of Oct 14, 2026, Claude Opus 4.8 leads GPT-5 Mini in Science at #27 against #81.
Long context: As of Oct 14, 2026, Claude Opus 4.8 leads GPT-5 Mini in Long context at #10 against #146.
Factuality: As of Oct 14, 2026, Claude Opus 4.8 leads GPT-5 Mini in Factuality at #21 against #110.
Abstraction (ARC): As of Oct 14, 2026, Claude Opus 4.8 leads GPT-5 Mini in Abstraction (ARC) at #12 against #41.
Claude Opus 4.8 or GPT-5 Mini?
As of Oct 14, 2026, Claude Opus 4.8 leads GPT-5 Mini in 6 of 6 shared categories: General LLM, Reasoning, Science, Long context, Factuality, and Abstraction (ARC).
Claude Opus 4.8 or GPT-5 Mini for General LLM?
As of Oct 14, 2026, Claude Opus 4.8 leads GPT-5 Mini in General LLM at #20 against #128.
Claude Opus 4.8 or GPT-5 Mini for Reasoning?
As of Oct 14, 2026, Claude Opus 4.8 leads GPT-5 Mini in Reasoning at #10 against #130.
Claude Opus 4.8 or GPT-5 Mini for Science?
As of Oct 14, 2026, Claude Opus 4.8 leads GPT-5 Mini in Science at #27 against #81.